Minsk Tractor Works Belarus 1221B.2 Disassembly-Assembly Manual
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Minsk Tractor Works Belarus 1221B.2 Disassembly-Assembly Manual

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BELARUS
1221.2/1221В.2
1221.3/1221.4
1221-0000010 РРС
DISASSEMBLY-ASSEMBLY MANUAL
Minsk Tractor Works 2010

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Summary of Contents for Minsk Tractor Works Belarus 1221B.2

  • Page 1 BELARUS 1221.2/1221В.2 1221.3/1221.4 1221-0000010 РРС DISASSEMBLY-ASSEMBLY MANUAL Minsk Tractor Works 2010...
  • Page 2 You can obtain more detailed information from your dealer of trade mark BELARUS. _______________________________________________________________________ Minsk Tractor Works RUE, 2010 All rights reserved. No part of this manual may be reproduced in any form whatsoever without written permission of Minsk Tractor Works RUE.

  • Page 3: Table Of Contents

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 CONTENTS INTRODUCTION ................................7 1 SAFETY REQUIREMENTS............................8 2 GENERAL ................................10 3 DISMOUNTING AND MOUNTING OF ENGINE AND ITS SYSTEMS ..............12 3.1 DISMOUNTING-MOUNTING OF ENGINES MMZ AND DEUTZ ................12 3.2 DISMOUNTING OF SUPERCHARGED AIR COOLER (SAC), MOUNTED ON TRACTORS BELARUS-1221.320 3.3 DISMOUNTING OF SUPERCHARGED AIR COOLER (SAC), MOUNTED ON TRACTORS BELARUS-1221.4 WITH ENGINE MMZ ..............................
  • Page 4 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3 CLUTCH ................................44 4.3.1 DISASSEMBLY-ASSEMBLY OF CLUTCH CONTROL UNITS BELARUS-1221.2/1221.3/1221.4 ....44 4.3.1.1 DISASSEMBLY-ASSEMBLY OF CLUTCH CONTROL UNITS FOR BELARUS-1221В.2 ......45 4.3.2 DISASSEMBLY-ASSEMBLY OF CLUTCH COUPLING ..................48 4.3.3 MOUNTING DISKS OF CLUTCH COUPLING ON ENGINE FLYWHEEL ............51 4.3.4 ADJUSTING POSITION OF SQUEEZE LEVERS .....................
  • Page 5 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.14 ADJUSTMENT OF FOOT BRAKE, VALVE AND REGULATOR OF PNEUMATIC SYSTEM PRESSURE .. 115 4.6.15 ADJUSTMENT OF PARKING BRAKE, BRAKE VALVE AND REGULATOR OF PNEUMATIC SYSTEM PRESSURE ................................116 4.6.16 MULTI-DISK FOOT AND PARKING BRAKES OPERATING IN OIL BATH ..........117 4.6.18 DISASSEMBLY OF LEFT-SIDE MULTI-DISK BRAKE OPERATING IN OIL BATH ........
  • Page 6 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 7.1.1 DISASSEMBLY-ASSEMBLY OF UNITS OF THE HYDROSTATIC STEERING CONTROLMOUNTED ON TRACTORS BELARUS-1221.4 WITH ENGINE DEUTZ» ..................201 7.1.2 DISASSEMBLY-ASSEMBLY OF UNITS OF THE HYDROSTATIC STEERING CONTROLMOUNTED ON TRACTORS BELARUS-1221В.2 ..........................204 7.2 STEERING COLUMN ............................207 7.2.1 DISASSEMBLY-ASSEMBLY OF STEERING COLUMN .................
  • Page 7 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.1.1 DISMOUNTING ELEMENTS OF ELECTRICAL EQUIPMENT OF ENGINE (MMZ) MOUNTED ON TRACTORS BELARUS-1221.2/1221В.2 ........................261 11.1.2 DISMOUNTING ELECTRICAL EQUIPMENT ELEMENTS OF ENGINE (MMZ) MOUNTED ON TRACTORS BELARUS-1221.3 ..............................262 11.1.3 DISMOUNTING ELECTRICAL EQUIPMENT ELEMENTS OF ENGINES (MMZ OR DEUTZ) MOUNTED ON TRACTORS BELARUS-1221.4 ..........................

  • Page 8: Introduction

    Data contained in this manual is accurate at the time of this manual compilation. As tractors BELARUS are continually updated, Minsk Tractor Works PA reserves the right to introduce design amendments without notifying the customers. All data given in this manual can be amended, and illustrative materials can differ from those describing tractors currently manufactured.

  • Page 9: Safety Requirements

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 SAFETY REQUIREMENTS For your safety purpose carefully study this manual before starting maintenance and repair works. Pay particular attention to all warnings and recommendations given in this manual. Always consult operating and maintenance manual issued by the manufacturer. 1.
  • Page 10 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 10. For washing parts and assembly units use special washing agents. When using kerosene or benzene for washing, observe fire safety regulations; make washing in ventilated premises. Keep tidy working place where dismounting-mounting works are underway. 11.

  • Page 11: General

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 2 GENERAL Tractor BELARUS 1221 and its modifications belong to general purpose row-crop wheeled tractors of traction class 2 with axle arrangement 4 x 4. They are designed for various agricultural works with mounted, half-mounted, trailer machines and implements, loading-unloading mechanisms, driving stationary agricultural machinery, as well as transport works in different climatic regions.
  • Page 12 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Steering is hydrostatic (HSC); supply pump is of gear type, actuating mechanism – two hydraulic cylinders of two-way action. Wheels with pneumatic low-pressure tires. Rear wheels – driving, front wheels – driving and guiding. Size of main tires: front wheels - 420/70R24;...

  • Page 13: Dismounting And Mounting Of Engine And Its Systems

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3 DISMOUNTING AND MOUNTING OF ENGINE AND ITS SYSTEMS 3.1 Dismounting-mounting of engines MMZ and Deutz Dismounting-mounting engine MMZ, mounted on tractors BELARUS 1221.2/1221В.2/1221.3 Figure 3.1 Mounting engine (MMZ) on tractors BELARUS 1221.2/1221В.2/1221.3/1221.4 а) dismantle tractor facia, see section 8.2 “Dismounting-mounting of facia of tractor BELARUS 1221.2/1221В.2”;...
  • Page 14 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1) for tractors BELARUS 1221.2/1221В.2, see section 11.1.1 “Dismounting elements of engine electrical equipment (MMZ) mounted on tractors BELARUS 1221.2/1221В.2”; 2) for tractors BELARUS 1221.3, see sections: - 11.5.4 “Operations performed when replacing engine”; - 11.6.1 “Operations performed when replacing engine”; - 11.7.1 “Operations performed when replacing engine”;...
  • Page 15 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 j) disconnect fuel lines from coarse fuel filter 6 (Figure 3.3), installed only on tractor BELARUS 1221.4 with engine MMZ; Figure 3.3 Mounting coarse fuel filter on MMZ. k) dismantle air purifier, as described in section 3.9 “Disassembly-assembly of air purifier unit installed on tractors BELARUS 1221.2/1221В.2/1221.3/1221.4 (with engine MMZ)”;...
  • Page 16 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1- support fastening bolt; 2- adjustment bolt; 3- check nut; 4- support; 5- shock absorber Figure 3.4 Front engine support o) connect lifting mechanism to diesel, for slinging diagram see (Figures 3.5); 1 – eye bolt; 2 –steel rope (chain); 3 – beam; 4 – grip; Figure 3.5 Diagram of slinging diesel MMZ...
  • Page 17 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 p) separate front driving axle together with spars and radiators from tractor and roll it away from diesel; ATTENTION! To prevent turning over of front axle take off ballast loads or put supports under them. q) unscrew bolts 10, 11 (Figure 3.1) that fasten rear diesel sheet to clutch body, disconnect diesel having pulled it forward until clutch coupling goes out of clutch body bell, and raise it using lifting mechanism;...
  • Page 18 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 а) Dismantle tractor facia, see section 8.3 “Dismounting-mounting facia of tractor BELARUS 1221.3/1221.4”; b) drain cooling fluid from tractor cooling system; c) drain oil from engine, having unscrewed plug in lower section of engine casing; d) drain oil from HSC system, see section 7.1.1 “Disassembly-assembly of hydrostatic steering controlunits mounted on tractors BELARUS 1221.4 with engine Deutz”;...
  • Page 19 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 i) dismantle air purifier, as described in section 3.10 “Disassembly-assembly of air purifier unit mounted on tractors BELARUS 1221.4 Deutz”; l) dismantle HSC oil lines 8, 5 (Figure 3.8) and undock from engine oil lines 10 by dismounting brace 9;...
  • Page 20 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 3.9 Diagram of slinging engine Deutz р) undock FDA with front bar and radiators from tractor, and roll it aside from diesel; ATTENTION! To prevent FDA turning over remove ballast loads or put supports under them. q) unscrew bolts (Figure 3.6) that fasten rear diesel sheet to clutch body, disconnect diesel having pulled it forward until clutch coupling goes out of clutch body bell, and raise it using lifting mechanism;...
  • Page 21 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.2 Dismounting of supercharged air cooler (SAC), mounted on tractors BELARUS-1221.3 а) loosen collars 2 (Figure 3.10) and shift heat-resistant silicon branch pipes 3 off air conduits 1 and cooler 8; b) unscrew bolts 4, 5, 7 that fasten cooler to water radiator and air conduit to inlet collector, remove cooler, air conduit and spacer 6.

  • Page 22: With Engine Mmz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.3 Dismounting of supercharged air cooler (SAC), mounted on tractors BELARUS-1221.4 with engine MMZ а) loosen collars 10, 11, 12 (Figure 3.11); b) shift heat-resistant silicon branch pipes 13, 14, 15, 16 off air conduits 1, 2, 3 and supercharged air cooler 9;...

  • Page 23: Dismounting Of Supercharged Air Cooler (Sac), Mounted On Tractors Belarus-1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.4 Dismounting of supercharged air cooler (SAC), mounted on tractors BELARUS-1221.4 with engine Deutz а) loosen collars 12 (Figure 3.12) and shift heat-resistant silicon branch pipes 5, 14, 15 off air conduits 1, 2, 3 and supercharged air cooler 16; b) unscrew bolts fastening the cooler to water radiator and dismantle the cooler.

  • Page 24: Dismounting-Mounting Of Cooling System Mounted On Tractors Belarus-1221.4 With Engine Mmz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.5 Dismounting-mounting of cooling system mounted on tractors BELARUS-1221.4 with engine MMZ а) drain cooling fluid from tractor cooling system; b) untignten collars 2 (Figure 3.13) and disconnect hoses 7, 8; c) unscrew three bolts 18, 21 and dismantle expansion tank 14; d) dismantle SAC, as described in section 3.3 “Dismounting supercharged air cooler (SAC), mounted on tractors BELARUS-1221.4 with engine MMZ”;...

  • Page 25: Dismounting-Mounting Of Cooling System Mounted On Tractors Belarus-1221.4 With Engine Deutz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.6 Dismounting-mounting of cooling system mounted on tractors BELARUS-1221.4 with engine Deutz Figure 3.14 Cooling system a) drain cooling fluid from tractor cooling system; b) disconnect hose 10, sleeves 29, 30, 31 from radiator 24 (Figure 3.14); c) unscrew two bolts 15 and dismantle expansion tank 4;...

  • Page 26: 1221.2/1221В.2/1221.3 With Engine Mmz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting-mounting cooling system mounted tractors BELARUS- 1221.2/1221В.2/1221.3 with engine MMZ а) drain cooling fluid from tractor cooling system; b) untighten collars 7 (Figure 3.15) or 49, 48 and disconnect hoses 14, 16, 26; c) unscrew three bolts 31, 32, 33 and dismantle expansion tank ок 24; d) disconnect wires of terminal carrier socket, if installed, on fan diffuser 6;...

  • Page 27: Disassembly-Assembly Of Fuel Tank 1221-1101500, Mounted On Tractors Belarus

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.8 Disassembly-assembly of fuel tank 1221-1101500, mounted on tractors BELARUS- 1221.2/1221В.2/1221.3/1221.4 with engines MMZ and Deutz, with two cylinders of lift linkage (hydraulic lift of the hydraulic system) 1) drain diesel fuel out of tank 22 (Figure 3.16) via draing point 30; 2) dismantle draining point 30;...
  • Page 28 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 3.16 Fuel tank...

  • Page 29: Disassembly-Assembly Of Air Purifier Unit Mounted On Tractors Belarus- 1221.2/1221В.2/1221.3/1221.4 (Mmz)

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.9 Disassembly-assembly of air purifier unit mounted on tractors BELARUS- 1221.2/1221В.2/1221.3/1221.4 (MMZ) а) dismount facia, as described in in section 8.3 “Dismounting-mounting facia of tractors BELARUS-1221.3/1221.4”; b) loosen collars 6 and 9 (Figure 3.17); c) dismantle branch pipes 7, 10 and air conduit 8; d) loosen collars 11;...

  • Page 30: Disassembly-Assembly Of Air Purifier Unit Mounted On Tractors Belarus-1221.4 Deutz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.10 Disassembly-assembly of air purifier unit mounted on tractors BELARUS-1221.4 Deutz а) dismount facia, as described in in section 8.3 “Dismounting-mounting of facia of tractors BELARUS-1221.3/1221.4”; b) unscrew bolts 15 (Figure 3.18); c) dismantle arms 16, 17; d) loosen collars 12;...

  • Page 31: Disassembly-Assembly Of Exhaust System Of Tractors Belarus-1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.11 Disassembly-assembly of exhaust system of tractors BELARUS-1221.4 а) unscrew bolts 4 (Figure 3.19); b) dismantle guarding 5; c) loosening fastening of collars 7; d) dismantle metal sleeve 6; e) loosening fastening of collars 20; f) dismantle metal sleeve 19;...
  • Page 32 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – outlet pipe; 2, 4, 10, 11, 13, 15, 18 – bolt; 3 – damper; 5 – guarding; 6 – metal sleeve; 7 – collar; 8 – nut; 9 – brace; 12 – support; 14 – cross piece; 16 – spacer; 17 – branch pipe; 19 – metal sleeve;...

  • Page 33: Disassembly-Assembly Of Fuel Supply Control Mounted On Tractors Belarus-1221В.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.12 Disassembly-assembly of fuel supply control mounted on tractors BELARUS-1221В.2 а) dismantle manual control of fuel supply, and to do this dismantle cover of right side panel, see section 8.4 “Disassembly-assembly of facia panels of right side panel”; b) dismantle tie-rods 20, 22, 23 (Figure 3.20), having disconnected cotter pins 19 and pins 18;...
  • Page 34 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...

  • Page 35: Disassembly-Assembly Of Fuel Supply Control, Mounted On Tractors Belarus- 1221.2/1221.3

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.13 Disassembly-assembly of fuel supply control, mounted on tractors BELARUS- 1221.2/1221.3 а) Dismount cover of right side panel, see section 8.4 “Disassembly-assembly of facia panels of right side panel”; b) dismantle tie-rods 20, 22, 23, (Figure 3.21) having disconnected cotter pins 19 and pins 18; c) unscrew nuts 8;...
  • Page 36 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...

  • Page 37: Disassembly-Assembly Of Fuel Supply Control, Mounted On Tractors Belarus-1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3.14 Disassembly-assembly of fuel supply control, mounted on tractors BELARUS-1221.4 with engines MMZ и Deutz а) disconnect harness 33 (Figure 3.22); b) unscrew bolts 25, 29 and 32; c) dismantle pedal 24 and plate 28; d) dismantle cover of right side panel, see section 8.4 “Disassembly-assembly of facia panels of right side panel”;...

  • Page 38: Transmission

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4 TRANSMISSION Transmission is designed for transfer and conversion of torque from engine to rear drive wheels, drive of front driving axle and rear PTO shank, as well as for driving pump of hydraulic hinge system.
  • Page 39 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 21 – tie-rod of clutch; 22 – shaft of FDA drive; 26 – bolts for fastening GB levers; 27 – cardan shaft of FDA. Figure 4.2 Technical data: Torque for tightening bolts of butt between clutch coupling body and GSB body is 320…400 N·m; butt of GSB body –...

  • Page 40: Transmission Disassembly (General Provisions)

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.1 Transmission disassembly (general provisions) a) drain oil from transmission, having unscrewed two draining plugs; b) put transmission with engine on supports; c) disconnect and dismantle pipelines of control system and transmission lubrication system passing through bodies’ butts; d) disconnect transmission from engine and dismantle tractor parts and units that hinder further disassembly;...

  • Page 41: Dismounting (Disconnection) Of Clutch Coupling Body

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 g) dismantle HSC metal oil lines by having disconnected them from high-pressure sleeves: 1) for tractors BELARUS-1221.2/1221.3/1221.4 (MMZ) see section 7.1 “Disassembly-assembly of hydrostatic steering controlunits mounted on tractors BELARUS-1221.2/1221.3/1221.4 with engine MMZ”; 2) for tractors BELARUS-1221В.2, see section 7.1.2 “Disassembly-assembly of hydrostatic steering controlunits mounted on tractors BELARUS-1221В.2”;...
  • Page 42 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 f) disconnect oil line 2 for lubrication of the shell of FDA drive cardan shaft (Figure 4.1); g) disconnect harness of FDA control, see section: 1) for tractors BELARUS-1221.3: - 11.5.3 “Control of DI and FDA 1221-8700410 (electrical part), mounted on tractors BELARUS- 1221.3”;...

  • Page 43: Dismounting (Disconnection) Of Gear Box Body

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 n) dismantle oil tank, see section 9.1.1 “Disassembly-assembly of hydraulic system units. Dismounting of oil tank from tractor with cabin dismantled (for hydraulic system with distributor RP 70-1221); or Dismounting of oil tank from tractor with cabin dismantled (for hydraulic system with distributor RS 213 Mita)”;...

  • Page 44: Transmission Assembly

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 f) bring under gear box (GB) body screwed support Р 7010-00 (or identical to it) (Figure 4.6) until it fully touches GB body; g) to disconnect butt “GB body – RA body” remove GB cover 19 (Figure 4.1) and cover of FDA 9 to get access to bolts to be unscrewed, then unscrew ten bolts (М18) 17 and two nuts 11, and take the units apart.

  • Page 45: Clutch

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3 Clutch 4.3.1 Disassembly-assembly of clutch control units BELARUS-1221.2/1221.3/1221.4 а) unscrew bolt 4 (Figure 4.7), remove rod 2 and strap 1; b) disconnect tie-rod 22, having pulled out pins 13; c) unscrew yokes 24 and nuts 23 off tie-rod 22; d) remove washer (20) and spring (21);...

  • Page 46: Disassembly-Assembly Of Clutch Control Units For Belarus-1221В.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3.1.1 Disassembly-assembly of clutch control units for BELARUS-1221В.2 Observe the following sequence of disassembly of clutch control units (Figure 4.8): Figure 4.8 Clutch control...
  • Page 47 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.9 Working cylinder а) drain brake fluid from the system, and to do it: 1) remove protective cap 8 (Figure 4.9) from the working cylinder; 2) put on pipe connection 9 one end of hose and put another end in clean vessel; 3) unscrew pipe connection 9 by half turn: 3.1) keep pressing pedal 39 (Figure 4.8) until fluid is released from hydraulic system on reversal;...
  • Page 48 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 3) unscrew nut 11 and tie-rod 12; 4) unscrew cover 10, remove ring 15; 5) make assembly of working cylinder in sequence reverse to disassembly; Figure 4.10. Main cylinder of clutch control on reversal e) disassembly hydraulic booster (Figure 4.11); to do this; 1) remove covers 3, having unscrewed bolts 8, 10;...

  • Page 49: Disassembly-Assembly Of Clutch Coupling

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Make assembly and mounting of parts and assemblies of clutch control in sequence reverse to disassembly. Before assemblying main and working cylinders hydraulic boosters must be clean. Presence of foreign particles (dust, paint, chips, pile) is not allowed. Before assembly of main cylinder and working cylinder on reversal grease friction surfaces with thin layer of braking fluid NEVA-M under Specification TU 2451-053-36732629-2003.
  • Page 50 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.13 f) remove second driven disk 7 (Figure 4.14); Figure 4.14 g) install squeezing device 1 on disks as an assembly (Figure 4.15);...
  • Page 51 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.15 h) unscrew technological bolts 2 (Figure 4.15) (М12х40); i) dismantle retaining plates 3 by unscrewing six bolts 5 and pull out adjustment nuts 4; j) unscrew nut of squeezing device and dismount supporting disk; l) unpin pin and dismount axles of squeeze levers and squeeze levers.

  • Page 52: Mounting Disks Of Clutch Coupling On Engine Flywheel

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3.3 Mounting disks of clutch coupling on engine flywheel Perform mounting of clutch coupling disks on engine flywheel in the following order: а) mount first driven disk with hub long end facing flywheel; b) mount middle disk as an assembly inside flywheel along three grooves; c) mount second driven disk with hub short end facing middle disk;...
  • Page 53 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.19 c) adjust position of squeeze levers by adjustment nuts 1, having set distance from supporting surfaces of levers to end face of supporting disk hub equal to 13.5…14.5 mm. Figure 4.20 Variation of dimension for individual leverов must not exceed 0.3 mm. After adjustment secure nuts 4 (Figure 4.20) against turning through by retaining plates 5.

  • Page 54: Reduction Gear Section Of Clutch Coupling Body

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3.5 Reduction gear section of clutch coupling body Drive shaft 6 (Figure 4.21) of stand-alone PTO, mounted on two bearings 3 and 5, has two gear rings. Smaller gear ring is permanently engaged with gear 2 of pump drive for hydraulic hinge system, and gear 14 of the first stage of PTO reduction gear;...

  • Page 55: Disassembly Of The Reduction Gear Section Of Clutch Coupling Body

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3.6 Disassembly of the reduction gear section of clutch coupling body 1 – shaft; 2 – bolt; 3 – yoke; 4 – bearing; 5 – tap; 6 – nut; 7 – arm; 8 – spacer; 9 – sealing ring; 10 –...
  • Page 56 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 а) first drain oil from clutch coupling body. b) disconnect tractor skeleton in plane “diesel”- “clutch body” - «gear box c) disconnect and remove meshed filler neck, side and bottom covers, covers’ spacers. To dismount lever of switching clutch coupling and tie-rod, do the following: а) unpin pin and pull out pin 2 (Figure 4.23), disconnect tie-rod 1.
  • Page 57 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.25 c) press bearing 1 from shaft (Figure 4.26); Figure 4.26 d) unscrew crown nut 1 (Figure 4.27) of PTO drive driven shaft; Figure 4.27 e) knock driven shaft 1 (Figure 4.28) of PTO drive outwards and extract it from clutch body together with gear of stage II;...
  • Page 58 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.28 h) remove ring 1 (Figure 4.29) that locks gear 2 on shaft 4; i) remove washer 3 and gear 2; Figure 4.29 j) remove bearing 1 (Figure 4.30) from shaft 2; Figure 4.30 k) remove locking wire, unscrew bolt 3 (Figure 4.31) for fastening yoke 2;...
  • Page 59 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.31 m) unscrew bolt 5 (Figure 4.32) and remove plate 6; n) knock roller 4 inside clutch body; o) extract yoke 2 (Figure 4.31) and gear 7 (Figure 4.33) of I stage of reduction gear. Figure 4.32 Figure 4.33 To dismount pump driving gears of transmission hydraulic system do the following:...
  • Page 60 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.34 b) press out gear 1 (Figure 4.35) together with axle, bearingом and locking ring; c) remove washer 2; Figure 4.35 d) remove locking ring 3 (Figure 4.36 а); e) press axle 1 (Figure 4.36 а) with bearing 2 off gear 4 (Figure 4.36 б); f) press bearing off axle;...
  • Page 61 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 g) press out shaft-gear 1 (Figure 4.37) together with bearingом and locking ring; h) pull out gear 2; Figure 4.37 i) remove locking ring 1 (Figure 4.38); j) press out bearing 2; Figure 4.38 k) press bearing 1 (Figure 4.39) off clutch body. Figure 4.39...
  • Page 62 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To dismount driving gear of hinge hydraulic system pump do the following: а) unscrew bolt 2 (Figure 4.40) and remove thrust washer 3; b) unscrew two bolts 1 and remove bar 4; Figure 4.40 c) using knocker 1 (Figure 4.41) press gear axle off clutch body; Figure 4.41 d) pull out gear 2 (Figure 4.42) with two bearings and two rings through upper hatch of clutch body;...
  • Page 63 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 f) turn gear over and press our the second bearing; Figure 4.43 g) press out bushing 1 (Figure 4.44); Figure 4.44 To dismount shaft of driving PTO drive, tap arm do the following: а) unscrew three nuts 1 (Figure 4.45); b) inside threaded openings of tap arm 2 screw technological bolts (М10 х30) 3 and using them press tap arm off clutch body;...
  • Page 64 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 d) press off clutch body driving shaft of PTO drive 1 (Figure 4.46) with two bearings; Figure 4.46 e) press sealing ring off tap arm (Figure 4.47); Figure 4.47 f) press bearing 1 off driving shaft of PTO drive (Figure 4.48); Figure 4.48...
  • Page 65 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 g) remove locking ring 1 from the shaft (Figure 4.49); Figure 4.49 h) press the second bearing 2 off the shaft (Figure 4.50); Figure 4.50 g) press sealing ring 1 (Figure 4.51) off the shaft of PTO drive. Figure 4.51...

  • Page 66: Assembly Of Clutch Coupling Body

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.3.7 Assembly of clutch coupling body Make assembly in sequence reverse to disassembly, and while doing so,: а) lubricate with consistent grease cavities of sealing rings pressed inside tap arm and driving shaft of PTO drive, as well as friction surfaces of tap arm, surface of roller 4 (Figure 4.32). b) gears and shafts must freely and without jams rotate in bearings.

  • Page 67: Gear Box

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.4 Gear box 4.4.1 Disassembly of gear box. Dismounting gear box а) unscrew bolts 1 (Figure 4.52), remove cover 2 of GB control; Figure 4.52 b) remove small collars 12 (Figure 4.53) anf disconnect hoses 13 of rear PTO drive; c) unscrew bolts 5, 9 and dismantle pipelines: 4 lubrications of FDA bushing, pipeline 2 –...

  • Page 68: Dismounting Hydraulic System Units, Gears' Assembly And Gear Shifting Yokes

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.54 4.4.2 Dismounting hydraulic system units, gears’ assembly and gear shifting yokes а) unscrew bolts 1 (Figure 4.55) and dismount left side cover 2; Figure 4.55 b) move lever for switching on transmission pump 1 (Figure 4.56) clockwise to the end; Figure 4.56 c) unscrew fastening bolts 2 (Figure 4.56), using dismounting bolts 3 remove pump drive 4 (Figure 4.57) as an assembly;...
  • Page 69 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.57 d) unscrew bolts 2 (Figure 4.58), dismantle filter-distributor 1, meshed filter 3 and spacers; Figure 4.58 e) unscrew bolts 1 (Figure 4.59) and dismount yokes’ body 2 as an assembly with yokes;...
  • Page 70 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.59 f) extract driving shaft of rear power-take-off 6 (Figure 4.60); g) remove collars 5 and disconnect pipe 3 for lubrication supply to primary shaft 2; h) unscrew bolts 1 and nut 7 for fastening cup 4 to GB body, screw two bolts in technological openings “А”...
  • Page 71 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 j) remove springs 6, 11, fixing elements 1, 10, pin 5, balls 2, 4, 9, 18, and axle 3; Figure 4.61 k) unpin and unscrew bolts 2 (Figure 4.62) of yokes 1 on leads 3, knock leads out of body and pull out yokes;...

  • Page 72: Disassembly Of Gears' Assembly

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.63 4.4.3 Disassembly of gears’ assembly а) unscrew bolts 1 (Figure 4.64) and remove bushing of lubricant conduit 3 , cover 2 , cup 4; b) unscrew nuts 5, dismount thrust washers; Figure 4.64 с) press cup 9 (Figure 4.65) together with bearings 6 off shafts 7 and 8;...
  • Page 73 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.65 Disassembly of primary shaft: а) remove washer 1 (Figure 4.66), gear 3, bearing 2, synchronizer 6; Figure 4.66 b) remove locking ring 4, press bushing of synchronizer 5, remove gear 7 and bearing 8; с) press bearing 19 (Figure 4.68) off shaft 9 (Figure 4.67), bearing 17 (Figure 4.68), gear 16, synchronizer 13.
  • Page 74 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 d) remove locking ring 15, bushing of synchronizer 14, bearing 11, gear 12. Figure 4.68 Disassembly of intermediate shaft: а) press off intermediate shaft 5 (Figure 4.69) gears 1, 2, 3, 4; Figure 4.69 b) dismantle bushings 1 (Figure 4.70); Figure 4.70 с) press off bearing 1 (Figure 4.71);...
  • Page 75 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.71 d) press off cup 3 (Figure 4.72) bearings 1 and 2. Figure 4.72 4.4.4 Disassembly of reduction gear section. Secondary shaft Figure 4.73...
  • Page 76 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To Figure 4.73: 1 – nut; 2 – washer; 3 – bearing; 4 – ring; 5 – washer; 6 – washer; 7 – bearing; 8 – gear; 9 – clutch; 10 – bushing; 11 - gear; 12 - gear; 13 - seat; 14 - washer; 15 - bolt; 16 - bearing; 17 - shaft; 18 - spacer;...
  • Page 77 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.75 e) press off cup 1 (Figure 4.76) external bearing shell; Figure 4.76 f) press off shaft 1 (Figure 4.77) internal shell of bearing 2. Figure 4.77...

  • Page 78: Disassembly Of Reduced Gears' Shaft

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.4.5 Disassembly of reduced gears’ shaft 1 - pipe; 2 – pipe connection; 3 - cup; 4 - bolt; 5 - washer; 6 - throttle; 7 - nut; 8 - washer; 9 - bearing; 10 - washer; 11 - gear; 12 - gear; 13 - ring; 14 - bushing; 15 - bearing; 16 - gear; 17 - clutch;...
  • Page 79 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) unscrew nut 1 (Figure 4.81) and remove cup 2; Figure 4.81 d) unscrew bolts 1 (Figure 4.82) and remove locking bars 2; Figure 4.82 e) knock out shaft 1 (Figure 4.83) so that to remove locking ring 2; Figure 4.83 f) knock out shaft with bearings, bushing and nut, as shown in figure 4.84;...
  • Page 80 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.84 g) extract from GB body gears, bushings and tooth clutch (Figure 4.85); Figure 4.85 h) unscrew nut 1 (Figure 4.86); i) press bearing 2 off shaft; j) remove bushing 3, bearing 4. Figure 4.86...

  • Page 81: Disassembly Of Gear Train Shaft

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.4.6 Disassembly of gear train shaft 1 – shaft; 2 – ring; 3 – bearing; 4 – gear; 5 – ring; 6 – gear; 7 – bearing; 8 – bushing; 9 – bearing; 10 – gear; 11 – bushing; 12 – bearing; 13 – bar; 14 – washer; 15 – bolt; 16 – bushing; 17 – impeller; 18 –...
  • Page 82 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.89 с) press bearing 1 (Figure 4.90) off gear 2; Figure 4.90 d) through opening in gear 1 (Figure 4.91) press external shell of bearing 2 off gear boring, extract bushing 4 and bearing 3; Figure 4.91...
  • Page 83 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) using puller press off shaft 1 (Figure 4.92) gear 2 with internal bearing shell; Figure 4.92 f) remove locking ring 1 (Figure 4.93), knock out shaft 2, extract gear 3; Figure 4.93 Dismount FDA drive in accordance with recommendations of section “Disassembly of FDA drive”...
  • Page 84 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 b) unpin washer 2 (Figure 4.95) and unscrew bolt 3, dismantle yoke 1; Figure 4.95 с) unscrew bolt 11 (Figure 4.96) and extract washer 12, spring 10, guide 9, ball 8 and lead 7; Figure 4.96 d) remove locking ring 5, unscrew bolt 1 and remove plate 2;...

  • Page 85: Disassembly Of Control Mechanism

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.4.7 Disassembly of control mechanism а) unscrew bolts 4 (Figure 4.97), remove cover 6 and spacer 5; b) dismantle clamps 9 and sheathes 8; с) unpin pin and knock out pins 2, 7; d) pull out levers 1, remove yokes 17, 18 and springs 16; e) extract spherical joints 3;...

  • Page 86: Assembly Of Gear Box

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.4.8 Assembly of gear box Assembly GB in reverse order. Parts must be washed. Bearings, balls and friction bushings must be lubricated with oil. Torques of boltов: 8 – 1.4...1.7 kgf m; 16 - 12.. .14 kgf m; 10 - 3...3.5 kgf m;...
  • Page 87 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.98...

  • Page 88: Rear Axle

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.5 Rear axle 4.5.1 Disassembly of rear axle а) unscrew cap nut 1 of oil line 5 (Figure 4.99); b) unscrew bolts 2 for fastening housing 3 of interlock clutch of differential and foot brake; с) dismantle housing 3 with adapter 4;...
  • Page 89 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 А – dismounting opening; 1 – left-side sleeve of half-axle; 2 – bolt; 3 – left-side cup; 4 – bushing; 5 – driven gear; 6 – cover; 7 – differential as an assembly; 8 – bearing; 9 – driven gear; 10 – right-side cup;...
  • Page 90 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Differential а) fix differential as an assembly in bench vice or special device; b) unscrew bolts 2 (Figure 4.102), disconnect cover 3 of differential and remove it; с) remove washer 4, gear 5; d) pull out cross-piece 6 with satellites 7, washers 8 and rollers 17; e) extract gear 15 and washer 14;...
  • Page 91 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Differential interlocking clutch а) unscrew bolts 12 (Figure 4.104); b) remove cover 13, diaphragm 14, squeeze disk 15, shaft 16, disks 17, 18, 19, 20; 1 – body; 2 – ring; 3 – bushing; 4 – spring; 5 – ring; 6 – connection pipe; 7 – adapter; 8 – sealant; 9 –...
  • Page 92 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Final drive а) fix half-axle 3 (Figure 4.106) to prevent turning through; b) remove locking washer 14, unscrew 15 and dismount carrier as an assembly; с) remove crown gear 11; d) unbend locking plates 18 and unscrew bolts 17; e) screw two bolts Ml8 inside dismounting openings of hub flange 10;...
  • Page 93 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 i) using inertion hammer press external shell of bearing 2 off sleeve 3, pull out ring 1 (Figure 4.108). Figure 4.108 Carrier а) using knocker knock out build-up pins 5 aiming to centre (Figure 4.109), via spacer of soft metal press out axles 6 of satellites;...
  • Page 94 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – bearing; 2 – gear; 3 – bearing; 4 – cup; 5 – ring; 6 – shell; 7 – shaft; 8 – sealing ring; 9 – locking ring; 10 – sealing ring; 11 – thrust ring; 12 – external shell of bearing. Figure 4.110 с) press out shell 6 with sealing ring as an assembly using puller and two dismountin threaded openining in shell;...

  • Page 95: Assembly Of Rear Axle

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.112 g) using gear 2 (Figure 4.113) and stand press off shaft 3 internal shell 1 of bearing; Figure 4.113 4.5.2 Assembly of rear axle Differential а) put differential body 13 (Figure 4.114) in vertical position using bench vice or a device; b) put on differential body 13 gear 10, secure it with bolts 11, nuts 9 with locking plates 16;...
  • Page 96 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 in oil. Check quality of assembly: insert in differential drive gear shaft of main drive and also check half- axle gear 5 which must turn through with satellites 7 and gear 15 without jams. ATTENTION! Before starting the assembly lubricate washers 4 and 14, gears 5 and 15, pins of cross-piece 6, rollers 17, satellites 7 and washers 8 with transmission oil.
  • Page 97 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 f) install on half-axle splines carrier 3 as an assembly, washer 12 and torque 10 to 200...220 N m (20...22 kgf/l) without spacers 11, while turning half-axle for rollers of bearings to take proper position; g) release bolt 10 and tighten it again by hand;...
  • Page 98 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Shaft-torsion а) mount bushing 3 (Figure 4.116) on splines of torsion 4 to the end on collar; b) mount on splines of torsion 4 gear 2 and secure it locking ring 1. Figure 4.116 Carrier, cup, clutch of differential interlock Make assembly of carrier, cup in sequence reverse to disassembly.
  • Page 99 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 ATTENTION! Total thickness of diametrically opposite stacks of spacers must be identical. d) insert bearings 6 inside borings of body 3 to the end; e) press bearings 8 (Figure 4.118) inside seats of cups 7; 7 –...
  • Page 100 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 7 – top cover; 8, 13 – sleeve; 9 – locking bolt; 10 – PTO crown gear; 11 - PTO drive clutch; 12 – bolt. Figure 4.120 j) install sleeves 8 and 13 (Figure 4.120) as an assembly with planetary mechanisms and tighten them with bolts 12 (М=18...22 kgf/l);...

  • Page 101: Adjusting Rear Axle

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 m) mount foot and parking-reserve brakes, differential imtelock clutch, see section 4.6 “Brakes”; n)mount top cover of rear axle and secure it with bolts; o) mount hubs for fastening rear wheels, and to do this: 1) mount hub 2 (Figure 4.122) on half-axle;...
  • Page 102 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 b) unscrew bolts for fastening cup 2 (Figure 4.124) and screwing them inside dismounting openinings in flange, press out the cup to extent allowing free dismantling of adjustment shims 4; с) by reducing thickness of stack of spacers 4 under flange of left cup 2, obtain such tension of differential bearings, that effort applied to external end face of driven gear teeth of main drive in order to turn through differential in bearings was in the range of 3..5 kgf (30...50 N).
  • Page 103 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 b) fix gear 2 (Figure 4.126) against turning through and, while swinging driven gear 4, measure lateral clearance in the engagement. Measure clearance at least in three positions of driven gear 4 in every 120°. 1 –...
  • Page 104 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 If tooth contact doesn’t correspond to the above-mentioned conditions, adjust engagement following recommendations given in table. Table 4.1 Position of tooth contact on driven gear The way to obtain correct engagement Diagram of gears Forward Back run Correct gears’...

  • Page 105: Brakes

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6 Brakes Tractors are equipped with foot-driven working brakes and separate parking stand-by brake with manually driven lever. Left- and right-side foot brakes are engaged for simultaneous braking of both wheels with interlocked pedals, or separately for brake left or right wheel. Separate braking is used in performing some works when enhanced tractor, or tractor aggregate manoevrability is required with minimum turning radii through inside wheel braking.

  • Page 106: Dismounting Of Parking And Right-Side Foot Brake As An Assembly

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.1 Dismounting of parking and right-side foot brake as an assembly 1.- brake shaft; 2 – braking disk; 3 – tie-rod; 4 – yoke; 5 – pin; 6 – pin; 7 – sheath; 8 – lever; 9 – spherical washer;...

  • Page 107: Disassembly Of Lever For Parking Brake Control

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.3 Disassembly of lever for parking brake control а) remove lever 2 (Figure 4.129) as an assembly with tie-rod 11 from axle 15 by unscrewing nut 8; b) remove sector (5) from cabin side plate, by unscrewing nuts (7); с) loosen check nut 12 and unscrew yoke 13 from yie-rod 11;...

  • Page 108: Dismounting Of Brakes' Levers

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.4 Dismounting of brakes’ levers а) unscrew bolts 25 (Figure 4.130) and remove pedals with rods 1, 2; b) remove return springs 24 of brakes levers 3, 4, remove cotter pin 26 and washer 27 from roller 18, unscrew bolt 5, remove right-side lever 3, unscrew bolt 7 and remove left-side lever 4;...

  • Page 109: Disassembly Of Differential Interlock Clutch

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – fastening bolt; 2 – adjustment bolt; 3 – oil line of rear axle DI; 4 – cap nut; 5 – adapter; 6 – DI housing; 7 – housing of left-side brake. Figure 4.131 4.6.6 Disassembly of differential interlock clutch а) unscrew bolts 9 (Figure 4.132) and remove 7, diaphragm 6 and pressure disk 5;...

  • Page 110: Dismounting Of Left-Side Foot Brake

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 During subsequent assembly: а) disks 2 (Figure 4.132) must move along splines of interlock shaft (4) under its own weight; b) disks’ facia should have no traces of oil or grease; c) bolts 9 must be torqued to 14…18 N•m. 4.6.7 Dismounting of left-side foot brake Unpin checknut and unscrew adjustment bolt-tie-rod 17 (Figure 4.133), remove spherical washer.

  • Page 111: Disassembly Of Right-Side Three-Disk Brake

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Assembly of right-side two-disk brake (dry) а) put thin coating of grease LITOL-24 on surface of profile grooves of disks 3 (Figure 4.133), put five balls inside them 5; b) mount second pressure disk 3 with grooves on balls and tighten them with springs 4; с) mount tie-rods 10, naving connected them with disks 3 by means of pins 14, and with yoke 12 –...

  • Page 112: Assembly Of Right-Side Three-Disk Brake (Dry Type)

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – housing; 2 – brake disk; 3 – pressure disk; 4 – tightening spring; 5 – pin; 6 – tie-rod; 7 – yoke; 8 – pin; 9 – checknut; 10 – spherical washer; 11 – adjustment bolt; 12 – cotter pin; 13 – nut; 14 – steel ball (5 pcs.);...

  • Page 113: Assembly Of Left-Side Foot Brake And Differential Interlock Clutch

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.11 Assembly of left-side foot brake and differential interlock clutch а) make assembly and installation of the left-side brake in a way similar to assembly and installation of the right-side foot brake; b) align, using shaft 1 of final drive driving gear, disks 3, interlock clutches and secure them with two diametrally located riveted rods 4 (screwdriver type);...
  • Page 114 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 b) mount brake shaft 7, having first lubricated with consistent grease its mounting neck “А” and sealing rings 10 of shaft 6; с) mount on splines of shaft 7 brake disk 3, and then subassembled set “Housing with disks (item 1)”;...

  • Page 115: Assembly Of Parking Brake Control Lever

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.13 Assembly of parking brake control lever а) press handle 1 on lever 2 (Figure 4.138); b) insert tie-rod 17 inside lever handle 2, connect it to fixing element 3 and fix with cotter pinом 16; с) from upper end insert inside handle 1 of lever 2 washer 18, spring 19, press tie-rod 17 from below, and screw button 20 on it;...

  • Page 116: Adjustment Of Foot Brake, Valve And Regulator Of Pneumatic System Pressure

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 i) adjust control of parking brake, see section 4.6.15 “Adjustment of parking brake, brake valve and regulator of pneumatic system pressure”; 1 – handle; 2 – sector; 3 – fixing element; 4 – tie-rod; 5 – checknut; 6 – pin;7,9 – lever; 8 - bolt Figure 4.139 4.6.14 Adjustment of foot brake, valve and regulator of pneumatic system pressure 1 –...

  • Page 117: Adjustment Of Parking Brake, Brake Valve And Regulator Of Pneumatic System Pressure

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 2 – adjustment bolt; 3 – checknut Figure 4.141 b) screw bolts 2 inside adjustment yokes or unscrew them to an extent that full travel of brakes’ right-side pedal was in the range of 115…125 mm upon effort 120…130 N, and braking distance was no more than 6 m at speed of 20 km/hour with effort no more than 600 N on pedals interlocked with bar, and also non-simultaneity of wheels braking start no more than 1 m (by impression).

  • Page 118: Multi-Disk Foot And Parking Brakes Operating In Oil Bath

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.142 Note. For tractors equipped (optional) with multi-disk brakes, that operate in oil bath, operations of adjusting foot brakes and parking brakes are identical to described above for tractors with dry type brakes. 1 – lever for parking brake control; 2 – lever; 3 – lever; 4 – lever; 5 – pin; 6 – yoke; 7 – checknut; 8 –...
  • Page 119 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Attention! Pressure disks of dry and “wet” brakes have identical overall and mounting dimensions, but they are not interchangeable. It is strictly forbidden to install disks of dry brakes on “wet” brakes, and visa versa, as it affects safety of tractors operation Intermediate disks 3 are secured against turning through in bodies 1, 13 by means of shoulders, made on the external contour.

  • Page 120: Disassembly Of Left-Side Multi-Disk Brake Operating In Oil Bath

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.18 Disassembly of left-side multi-disk brake operating in oil bath а) put tractor on even horizontal terrain and block wheels with wedges from front and rear sides to exclude accidental tractor movement; b) jack up left rear section of tractor until the wheel is lifted from support ground, and put secure support under the left-side sleeve of rear axle;...
  • Page 121 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 i) dismount body (1) with foot brake as an assembly, having screwed two bolts in disassembly threaded openings “А” of brake body; k) remove body from mounting pins and pedals’ roller 4; l) put body with brake as an assembly 1 on the bench, see (Figure 4.146), (with cup cover “А” upwards);...

  • Page 122: Assembly Of Left-Side Brake

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – body; 2 – nut; 3 – pin; 4 – tie-rod; 5 – brake disk (8 pcs.); 6 – intermediate disk (6 pcs.); 7 – pin; 8 – screw; 9 – washer; 10 – sheath; 11 – screw; 12 – plate; 13 – spacer; 14 – cotter pin; 15 – cup cover;...
  • Page 123 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Number  Thickness S, mm  Without number    ‐0.1 1    ‐0.12 2    ‐0.12 3  3.6‐0.12  4  3.8‐0.12  5  4.0‐0.12  6  4.2‐0.12  7  4.4‐0.12  3) visually check quality of spacer 13 (Figure 4.150) and if damaged, install new poronyte 1 mm thick spacer;...
  • Page 124 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.151 А-А (2:1) Figure 4.152 Adapter for assembly and installation of brake Spline parameters Module Number of teeth Angle of initial а contour profile Misalignment of Хm +1.125 initial contour Roller diameter  Roller size 61.157 М...
  • Page 125 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...
  • Page 126 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Material - steel Hardness – 255-302 НВ 7) mount brake (Figure 4.153) on tractor by performing the following operations: 7.1 bring brake together with aligning mandrel “А” to the end face of shank of final drive gear ‘С”; 7.2) ) insert shank of mandrel “В”...

  • Page 127: Disassembly Of Right-Side Foot Brake

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.6.20 Disassembly of right-side foot brake а) make necessary preparatory operations described in section 4.6.20 “Disassembly of left-side multi-disk foot brake operating in oil bath”; b) for tractors BELARUS-1221.2/1221.3 with hydromechanical drive of rear PTO (Figure 4.154 а, с) make the following operations: 1) disconnect tie-rod of rear PTO control 7 from lever of control valve 8;...
  • Page 128 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – pedals roller; 2,4 – pin; 3 – PTO lever; 5 – washer; 6 – cotter pin; 7 – parking brake lever ; 8 – adjustment bolt of parking brake Figure 4.155 1) remove cotter pin 6 and washer 5 from pedals’ roller (1); 2) unpin and remove pins 2, 4 and disconnect control tie-rods from levers 3, 7;...
  • Page 129 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – cup; 2 – friction disk; 3 – intermediate disk; 4 – pedals’ roller; 5 – sealing sheath; 6 – pressure disk; 7 – ball; 8 – parking brake; 9 – cover; 10 –spacer; 11 – parking brake shaft; 12 – drain plug; 13 –...
  • Page 130 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – 1 – cup; 2 – friction disk; 3 – intermediate disk; 4 – pedals’ roller; 5 – sealing sheath; 6 – pressure disk; 7 – ball; 8 – parking brake; 9 – cover; 10 –spacer; 11 – parking brake shaft; 12 – drain plug;...

  • Page 131: Assembly Of Right-Side Foot Brake

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 14) put body with brake as an assembly on the bench, with cup cover 2 upwards (Figure 4.159) and disassembly the brake, having first unscrewed three screws 1 15) remove cover 2 and spacer 3. Brake disassembly is similar to disassembly made in item “н”...
  • Page 132 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 2 – brake disk; 3 – intermediate disk; 11 – parking brake shaft; 13 – brake body; “А”. Plane. “В”. Parking brake shaft neck. “С”. Opening of drive gear (right-side). “Е”. Final drive gear. Figure 4.160 d) install spacer 10 and cover 9, (Figure 4.161);...
  • Page 133 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 f) mount on tractor all dismounted parts for control of foot and parking brakes, as well as parts for rear PTO control; g adjust travel of right-side brake pedal using bolt 19, (Figure 4.163), as described above, see item “b”...
  • Page 134 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – parking brake lever; 2 - clamp; 3 – sector Figure 4.164 If the tractor is equipped with pneumatic brake and operates with trailer equipped with pneumatic brakes, adjust travel of parking brake lever in the following way: а) shift lever 1, (Figure 4.164), to extreme forward (disengaged) position;...
  • Page 135 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) by turning adjustment bolt 18, (Figure 4.163), adjust travel of lever (1) so that parking brake was fully engaged on the 2 or 3 tooth of sector 3 (Figure 4.164); f) tighten check nut 8 (Figure 4.165) and 21а (Figure 4.163); g) mount back in place right-side rear wheel, torque wheel fixing nuts to 200…250 N·m.

  • Page 136: Disassembly-Assembly Of Brakes Control On Reversal Of Belarus-1221В.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.7 Disassembly-assembly of brakes control on reversal of BELARUS-1221В.2 Observe the following sequence of brakes control on reversal (Figure 4.166): а) drain braking fluid from the system, and to do this: 1) take off sheath 1 of reverse 2 main cylinder, remove protective cap from by-pass valve 3 of reverse 4 working brake cylinder;...
  • Page 137 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.166...
  • Page 138 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.167...

  • Page 139: Dismounting Of Components Of One-Wire Pneumatic Drive Of Trailer Brakes On Tractors Belarus-1221.2/1221.3

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.8 Dismounting of components of one-wire pneumatic drive of trailer brakes on tractors BELARUS-1221.2/1221.3 Attention: Before starting disassembly of components of trailer brakes’ pneumatic drive, release compressed air from the system. To do this, pull upwards ring for condensate release valve 6 (Figure 4.168).
  • Page 140 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of connection head 1 (Figure 4.170): а) unscrew cap nut 3 and disconnect from connection head 1 pipeline 4; b) unscrew connection pipe 2 and remove connection head 1. Figure 4.170 Make assembly of components of the pneumatic drive of tractor trailer brakes in order reverse to disassembly.

  • Page 141: Dismounting Of Components Of Two-Wire Pneumatic Drive Of Trailer Brakes On Tractors Belarus-1221.2/1221.3

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.9 Dismounting of components of two-wire pneumatic drive of trailer brakes on tractors BELARUS-1221.2/1221.3 Attention: Before starting disassembly of components of trailer brakes’ pneumatic drive, release compressed air from the system. To do this, pull upwards ring for condensate release valve 6 (Figure 4, item 6).
  • Page 142 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of connection heads 1 and 5 (Figure 4.173): а) unscrew cap nuts 3 and 7; b) disconnect from connection heads 1 and 5 pipelines 4 and 8; and then unscrew connection pipes 2and 6 c) remove connection heads 1 and 5.

  • Page 143: Dismounting Of Components Of Combined Pneumatic Drive Of Trailer Brakes For Tractor Belarus-1221.4 With Engine Deutz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.10 Dismounting of components of combined pneumatic drive of trailer brakes for tractor BELARUS-1221.4 with engine Deutz Attention: Before starting disassembly of components of trailer brakes pneumatic drive, release compressed air from the system. To do this, pull upwards ring for condensate release valve 6 (Figure 4.174).
  • Page 144 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.175 Dismounting connection head 1 (Figure 4.176): а) unscrew cap nut 3 and disconnect from connection head 1 pipeline 4; b) unscrew connection pipe 2 and remove connection head 1. Figure 4.176 Dismounting connection heads 1 and 8 (Figure 4.177): а) unscrew cap nuts 3 and 6;...
  • Page 145 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.177 Make assembly of components of the pneumatic drive of tractor trailer brakes in order reverse to disassembly. Attention: After assembly check air tightness of the system, parameters of pressure regulator and brake valve actuation. Design and principle of operation, procedure of check and adjustment are described in operating manual enclosed with each tractor.

  • Page 146: Dismounting Of Components Of One-Wire Pneumatic Drive Of Trailer Brakes For Tractor Belarus-1221.4 With Engine Mmz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.11 Dismounting of components of one-wire pneumatic drive of trailer brakes for tractor BELARUS-1221.4 with engine MMZ Attention: Before starting disassembly of components of trailer brakes’ pneumatic drive, release compressed air from the system. To do this, pull upwards ring for condensate release valve 9 (Figure 4.178).
  • Page 147 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of connection head 1 (Figure 4.180): а) unscrew cap nut 3 and disconnect from connection head 1 pipeline 4; b) unscrew connection pipe 2 and remove connection head 1. Figure 4.180 Make assembly of components of the pneumatic drive of tractor trailer brakes in order reverse to disassembly.

  • Page 148: Dismounting Of Components Of Two-Wire Pneumatic Drive Of Trailer Brakes

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.12 Dismounting of components of two-wire pneumatic drive of trailer brakes Attention: Before starting disassembly of components of trailer brakes’ pneumatic drive, release compressed air from the system. To do this, pull upwards ring for condensate release valve 9 (Figure 4.181).
  • Page 149 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of connection heads 1, 5 (Figure 4.183): а) unscrew cap nuts 3and 7 and disconnect from connection heads 1 and 5 pipelines 4 and 8; b) unscrew connection pipes 2, 6 and remove connection heads 1, 5. Figure 4.183 Make assembly of components of the pneumatic drive of tractor trailer brakes in order reverse to disassembly.

  • Page 150: Disassembly-Assembly Of Rear Pto

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.13 Disassembly-assembly of rear PTO Dismounting of hatch cover and rear axle cover: а) unscrew four bolts 2 (М8х16) and one bolt М12х20 (Figure 4.184), dismount access hatch cover (1) and spacer; b) unscrew nineteen bolts (3) (М12х30), dismount cover of rear axle body (4) and spacer. 1 –...
  • Page 151 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) unscrew nuts 1 and take off guarding 2; f) unscrew six boltов 4 (М10х35 – 5 pcs.шт., М10х40 – 1 pc.); g) ) screw two disassembly bolts inside cover 5 and dismount planetary PTO reduction gear off rear axle body;...
  • Page 152 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly-assembly of planetary PTO reduction gear 1 – bearing; 2 – bushing; 3 – nut; 4 – lever; 5 – arm; 6 – lever; 7 – pin; 8 – shaft; 9 – ring, 10 – axle;...
  • Page 153 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 22 – nut Figure 4.188; b) press out bearing 21 and carrier 18 together with satellites 19 (figures 4.187, 4.189); During subsequent assembly bearing (21) pust be pressed in carrier (18) to the end of shoulder (Figure 4.189);...
  • Page 154 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 9, 10 – brake band; 31- eccentric shaft; 35 – check ring; 41 – axle Figure 4.190 ATTENTION! When tractor is equipped with planetary PTO reduction gear having wider brake band on driven drum (sun drum), make subsequent assembly in a way for wider band (В=56 mm) to be on the side of PTO cover 3 –...
  • Page 155 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 16 – axle; 17 – pin; 19 - satellite; 20 – bearing. Figure 4.192 During subsequent assembly: а) lubricate openings matching satellites’ bearings with consistent grease; b) openings in satellites’ axles must be aligned with carrier openings for pressing in pins. Radial lubrication openings must face from centre outwards;...
  • Page 156 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 During subsequent assembly press bearings in a way to provide installation of check rings; с) remove lock ring 13 (Figure 4.195) and disconnect from drum 14 sun gear 15; 13 – lock ring; 14 – drum; 15 – sun gear Figure 4.195 d) remove lock ring 8 (Figure 4.196) and press bearing 7 with collar 6 off cover 3;...
  • Page 157 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of control roller and shift clutch: а) remove safety wire and unscrew locking bolt 2 (Figure 4.198); b) remove lead 3 and control roller 1; с) remove shift clutch лючения 4; 1 – control roller; 2 – locking bolt; 3 – lead; 4 – shift clutch Figure 4.198 During subsequent assembly: Tighten locking screw and securely lock with wire.
  • Page 158 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – crown gear; 3 – cup; 8 – check nut; 9 – locking screw Figure 4.200 b) knock out crown gear shaft 7 as an assembly with gear 1, cup 3 and bearing 4 (Figure 4.199); с) dismount shift clutch (if it is still in place) (Figure 4.201);...
  • Page 159 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 4.203 e) remove locking ring 2 (Figure 4.202), and disconnect crown gear from shaft 7; f) remove locking ring 6 (Figure 4.204) and press ball bearing 4 off cup 3; 3 – cup; 4 – bearing; 6 – locking ring Figure 4.204 During subsequent assembly: а) before mounting crown gear inside rear axle body, align opening «А»...

  • Page 160: Disassembly-Assembly Of Rear Pto Control

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.13.1 Disassembly-assembly of rear PTO control Control of rear PTO 1221М-4216005 – electrohydraulic and mounted on tractors equipped with brakes operating in oil bath (wet brakes). ATTENTION: Disassembly-assembly of rear PTO control 1221M-4216005 must be made on shut- off tractor 1-arm;...
  • Page 161 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 а) to dismount sleeves 11, 12, 13 (Figure 4.206) unscrew bolts 15 and remove rings 16 and sleeves 11, 12, 13; b) to dismount hydraulic cylinder 5, remove cotter pina 25 и 29 and washers 17 and 22. с) to dismount lever 6, unscrew bolt 20.
  • Page 162 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) dismount lever 2, having unscrewed bolt 17; d) dismount tie-rod 9 with handle 14, and to do this remove cotter pin 25 (view “А”) and washer e) remove valve 7 and arm 8,to which it is fastened, having unscrewed two bolts 18 with washers 20 and 28.

  • Page 163: Adustment Of Pto

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4.13.2 Adustment of PTO Note: Make adjustment of PTO control in special workshop. During subsequent assembly: а) during factory assembly or repair eccentric axle 5 (Figure 4.209) is installed in extreme right position (the flat is vertically on the right side) and fastened with locking plate 3 and bolt 4; b) install lever 1 in neutral position, having aligned openings in lever and rear axle body by means of rod 8 mm in diameter, or bolt (2) М10х60;...
  • Page 164 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Make adjustment of PTO brake bands during tractor operations in the following cases: а) PTO slips; b) value of dimension “А” (Figure 4.210) in position “PTO off” (rod is drawn in) is less than 38 mm, or in position “PTO on”...

  • Page 165: Front Driving Axle (Fda)

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 5 FRONT DRIVING AXLE (FDA) 5.1 Drive of front driving axle FDA drive is designed for transfer of torque from gear box to FDA. It includes reduction gear with multi-disk friction hydraulically driven clutch, torsion, cardan shaft and drive control system. Drive friction clutch is located inside GB body on the right side of tractor movement.

  • Page 166: Disassembly Of Fda Drive

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 When tractor travels forward without slippage shaft (5), connected to FDA wheels, has greater rotation speed than gear (1) and drum (3), connected to gear (1) via stack of disks (2), turns against shaft (5). Knuckles of drum (3) move half-clutch across splines of shaft (5) in axial direction, squeezing spring (7).
  • Page 167 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 5.3 2) unstake corbel of nut (2) (figure 5.4), fix shaft (1) to prevent rotation, unscrew nut (2) and remove locking washer 3; Figure 5.4 3) using spacer made of soft metal (brass, etc.), knock out shaft (1) (figure 5.5) as an assembly forward in tractor movement direction;...
  • Page 168 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 4) pull hydraulically squeezed clutch (1) out of GB body, (figure 5.6), as an assembly with gear 2; Figure 5.6 5 press out of gear box body bearing (2) (figure 5.7) and bushing (1) back as tractor travels; Figure 5.7 6) dismount from shaft (3) (figure 5.56) bushing (1), half-clutch (2), spring 4;...
  • Page 169 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 5.9 11) press bearings (1) out of gear 2 (Figure 5.10); Figure 5.10 12) remove locking ring (1), (figure 5.11), and pull out of drum (10) a stack of friction disks (9), guides (6) and springs (7); 13) remove locking ring (3), cup (4) and spring 5;...

  • Page 170: Assembly Of Fda Drive

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1) remove locking rings (4), avoiding their deformation; 2) press out needle bearings 5; 3) disconnect flange (1) and sliding yoke 6; 4) remove cross-pieces 2; 5) remove end face sealings of cross-pieces 3. Perform assembly in sequence reverse to disassembly. Figure 5.12 5.1.2 Assembly of FDA drive Perform assembly in sequence reverse to disassembly, and in doing this:...
  • Page 171 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 5.14 с) while mounting shaft (3) (figure 5.15) see that its splines were alighed with splines of half-clutch (2) and drum (1). After clutch is installed in gear box body torque nut (4) to 80... 100 N•m. (8…10 kgf m) and centre- pop in shaft grooves;...
  • Page 172 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) before mounting cardan shaft grease external surface of sliding yoke (1) (figure 5.17) with oil that is filled in transmission body; Figure 5.17 f) torque nuts (2) for fastening flange (3) of cardanshaft to 35...45 N·m. (3.5…4.5 kgf m); g) to install cover (2) on transmission (2) (figure 5.18) as an assembly, unscrew plug (3) and align bushing (1) with cover opening using rod of 5...6 mm;...

  • Page 173: Adjustment And Tesing Fda Drive

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 5.1.3 Adjustment and tesing FDA drive Adjusting free travel of the stack of disks of hydraulically squeezed clutch Measure free travel “А” (figure 5.20) of the stack. If free travel exceeds allowable value add one driven disk or replace stack of disks.
  • Page 174 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 b) put under end face of switch (5), (figure 5.21) initial number (5-6 pcs) of adjusting shims (4); с) by removing one adjusting shim after another, obtain such position of switch when its contacts are closed; d) put half-clutch to position “II”, when knuckles of halg-clutch and drum are fully taken apart and pusher is recessed in extreme position;...
  • Page 175 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – oil tank; 2 – metering vessel; 3 - hydraulically squeezed clutch; 4 – pressure gauge; 5 - throttle; 6 - filter; 7 – safety valve; 8 – oil pump Figure 5.23...

  • Page 176: Disassembly Of Fda With Planetary-Cylindrical Reduction Gears

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 5.2 Disassembly of FDA with planetary-cylindrical reduction gears 5.2.1 Disassembly of FDA final drive Dismounting and disassembly of driving gear of the final drive: а) unscrew bolts 2 for fastening final drive body 3; b) screw two disassembly bolts (1) in threaded openings of body and dismount driving gear as an assembly (Figure 5.24);...
  • Page 177 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To figure 5.25: 1 – driving gear of the final drive; 2, 5 – conical roller earings;3 – driving gear body; 4 – adjusting rings; 6 – oil retaining ring; 7 – sealing rings; 8 – plug; 9 – flange; 10 – washer; 11 – crown nut; 12 – cotter pin.
  • Page 178 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1- bolt; 2 – disassembly bolt; 3- cover; 4 - differential Figure 5.28 с) using extractor press off internal shells of conical roller bearings 3. d) unlock and unscrew nut 2, (Figure 5.29). 1 – differential as an assembly; 2 – nut; 3 – bearing Figure 5.29 e) using special extractor press driven conical gear (2) off differential body as an assembly 1, (Figure 5.30).
  • Page 179 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 f) unbend locking plates (1), unscrew nuts (2) and take differential boxes apart 3 and 4, (Figure 5.31). 1 – locking plate; 2 – nut; 3, 4 – differential box. Figure 5.31 g) remove satellites’ axles (6) together with satellites 5, (Figure 5.32); h) pull out of boxes (1) and (8) half-axle gears (4), pressure cups (3), drive disks (2) and driven disks (7).

  • Page 180: Assembly And Adjustment Operations

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 5.2.2 Assembly and adjustment operations а) adjust pretension in bearings 2, 3 of final drive driving gear 4, which must nor exceed 0.04 mm (Figure 5.33). Adjust tension by grinding oone one adjusting rings 5 and tightening crown nut 7. b) torque crown nut 7 to 120…150 N m.
  • Page 181 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) mount differential 5 with conical roller bearingами 6 inside body 3 of FDA, (Figure 5.35). f) put set pf spacers 2 with total thickness 2.0…2.5 mm on the right side between FDA body 3 and sleeve 9.
  • Page 182 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – flange; 2 – body of final drive gear as an assembly; 2 – stack of spacers; 4 – driving gear of final drive; 5 – driving gear of final drive; 6 – body of FDA; 2 – filler plug. Figure 5.36 IMPORTANT! Lateral clearance and tooth contact are adjusted after adjusting pretension of bearings of the gear of final drive and differential (Figure 5.33).
  • Page 183 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Table 5.1 Tooth contact on How to adjust gears’ engagement Adjustment driven gear diagram Correct gears engagement under small load Bring driving gear towards the driven one Shift driving gear aside from the driven one. Shift driven gear (differential) aside from the driving one Bring driven gear (differential) closer to...

  • Page 184: Disassembly Of Planetary-Cylindrical Reduction Gear

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 5.3 Disassembly of planetary-cylindrical reduction gear Dismounting of steering rod and joint of hydraulic cylinder rod а) unlock and unscrew crown nut 3 (Figure 5.38); b) press ball pin (1) out of swivel lever (2) and disconnect steering rod; с) press pin of hydraulic cylinder rod (4) out of arm (5);...
  • Page 185 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – nut; 2 – body bushing; 3 – hydraulic cylinder arm; 4 – swivel lever; 5 – reduction gear body. Figure 5.39 Dismounting of reduction gear а) to make dismounting of reduction gear easier, wrap steel rope around reduction gear body, and using lifting mechanism pull the rope to balance mass of reduction gear, (Figure 5.40) Figure 5.40 b) unscrew four bolts (1), screw two disassembly bolts in threaded openings (2) of pivot axle (3)
  • Page 186 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – bolt; 2 – disassembly threaded openings; 3 – upper pivot axle; 4 – adjustment spacers; 5 – lower pivot axle; 6 – swivel knuckle. Figure 5.41 NOTE: Adjusting shims (4) are installed only under flange of upper swivel axle (3). Disassembly of wheel reduction gear а) unscrew bolts (3) and remove cover (2) together with spacer 1, (Figure 5.42) 1 –...
  • Page 187 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 NOTE: To fasten cover to cup use bolts М8 1 – cup; 2 – nut; 3 – flange shank Figure 5.43 с) unscrew bolts (2) for fastening cover (3). Screw two disassembly bolts (1) in cover threaded openings and dismount cover together with flange (4), (Figure 5.44).
  • Page 188 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – flange; 2 - bearing; 3 - carrier; 4 – distance ring; 5 – block of gears; 6, 7 – locking rings; 8 – spherical bearing Figure 5.45 e) unbend corners of washer (2) from corner of bolt head (1); unscrew bolt (1) and remove washers (2), (3);...
  • Page 189 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of bearings of pivot axles а) pull cup of bearing (1) out of FDA sleeve using suitable tool, (Figure 5.47). 1 – bearing cup; 2 – bearing; 3 – FDA sleeve Figure 5.47 b) using suitable extractor (2) press out of sleeve external shell of conical roller bearing (1), and in a similar way press out lower shell, (Figure 5.48).
  • Page 190 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 5.4 Assembly and adjustment operations а) adjust axial play in conical roller bearings (2) of drive cylindrical gear (3) using spacers (4) between cup (6) and body (5). Clearance or tension should not exceed 0.05 mm, (Figure 5.49). Torque bolt (1) to 120…140 N•m.and lock with bending washer 2, (Figure 5.46) 1 –...
  • Page 191 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) bearings 2, 4 (figure 5.51) must be adjusted without clearance, make adjustment by torquing nut (2) to 180…200 N•m. with its subsequent unscrewing by angle 15…20; during tightening rotate body of wheel reduction gear so that rollers of bearings were correctly positioned in shells. After adjustment lock the nut by deformation of nut gorbel inside the cut of flange shaft.
  • Page 192 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1) put upper and lower bearings 2 and cup of bearing (1) inside half-axle sleeve (3), (Figure 5.53) 1 – bearing cup; 2 – bearing; 3 – FDA sleeve Figure 5.53 2) match borings in sleeve (6) and body (5) and mount upper axle (3) together with spacers (4) and ring (3) inside opening of bodyand sleeve, having first lubricated sealing ring with grease LITOL-24, (Figure 5.54).
  • Page 193 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 turn axle by 180 , so that the second good lug coinsided with axis of pusher, sensor of wheel turning angle. 1 – extension; 2 – bottom left-side axle of pivot Figure 5.55 7) Adjust preload in conical roller bearings of pivot axles. Tension is considered correct if effort of knucle turn applied to flange (5), is 60…80 N.
  • Page 194 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) check and, if necessary, adjust maximum allowable angles of knuckle turn (1), which must be within 39…40 (figure 5.57) when measured from position corresponding to straight movement. Make adjustment of maximum permissible turn to the left or right by means of adjustment screw (2), which is locked with checknut (3).

  • Page 195: Wheels And Hubs

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 6 WHEELS AND HUBS 6.1 Mounting-dismounting works on wheel dismantled from tractor Mounting and dismounting tires are dangerous operations, hence they must be carried out only by competent persons who have corresponding professional knowledge and skills, and relevant equipment.
  • Page 196 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 l) when dismounting the tire never try to loosen tire beads, valves, remove control valve and release air out of the tire.

  • Page 197: Dismounting Rear Wheel And Hub

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 6.2 Dismounting rear wheel and hub  а) put tractor on even ground, having placed stops for front and rear wheels; b) jack up corresponding sleeve of the half-axle; с) unscrew eight nuts 6; d) dismount rear wheel. 6.2.1 Disassembly-assembly of rear wheel hub   а) clean half-axle from mud;...

  • Page 198: Steering

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 7 STEERING 7.1 Disassembly-assembly of units of hydrostatic steering controlmounted on tractors BELARUS-1221.2/1221.3/1221.4 with engine MMZ» Dismounting HSC oil tank: а) unscrew plug 1 (Figure 7.1) and drain oil out of oil tank; b) disconnect hose 10, having loosened collar 9; с) having unscrewed valve 14, disconnect oil line 6;...
  • Page 199 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – plug; 2, 7, 13, 15 – ring; 3 – body; 4 – meshed filter; 5 – filler plug; 6 – oil gauge; 8, 9 – bolt; 10 – washer; 11 – cover; 12 – safety valve; 14 – filtering element; 16 – cup. Figure 7.2 Oil tank...
  • Page 200 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of metering pump: а) disconnect high-pressure sleeves 3, 4, 5 (Figure 7.1) and oil line 13; b) unscrew four fastening bolts and disconnect metering pump 2; с) put metering pump in polyethylene bag. Mount metering pump on tractor in reverse order. Disassembly-assembly of metering pump: ATTENTION! Accounting for extraordinary complexity and responsibility of metering pump from the point of view of steering safety, its disassembly and assembly can be performed only by...
  • Page 201 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 М-М Figure 7.3 Disassembly-assembly of steering hydraulic cylinder: а) unscrew screw 9 (Figure 7.4); b) unscrew cap nut5; с) pull out of cylinder body 17 rod 2 with piston 4 and front cover 1; d) unbend locking holes on corbel of nut 3 and unscrew nut; e) remove piston 4, front cover 1 and cap nut 5.

  • Page 202: Disassembly-Assembly Of Units Of The Hydrostatic Steering Controlmounted On Tractors Belarus-1221.4 With Engine Deutz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 7.4 Hydraulic cylinder Make assembly of hydraulic cylinder in reverse order: а) before assembly lubricate with oil sealing elements 12, 13, 14, 15, 16; b) put on rod 2 cap nut 5, front cover 1, piston 4; с) torque nut 5 to 80 N m and lock it (bend gorbel of nut 5 in grooves on rod 2;...
  • Page 203 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 7.5 а...
  • Page 204 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly-assembly of HSC oil tank of tractor BELARUS-1221.4 with engine Deutz Figure 7.5 б HSC tank of tractor “BELARUS-1221.4 Deutz” а) unscrew drain plug 10 (Figure 7.5 b) of HSC oil tank 2 (Figure 7.5 а) and oil out of it; b) disconnect hose 1 (Figure 7.5 а), having loosened collar 3;...

  • Page 205: Disassembly-Assembly Of Units Of The Hydrostatic Steering Controlmounted On Tractors Belarus-1221В.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 k) close oil tank openings with plugs or wrap with polyethylene film; Mount HSC oil tank on tractor in reverse order.Copper rings of valve 7 (Figure 7.5 а) replace for new ones. Oil is filled in oil tank via filter 12 (Figure 7.5 b) by unscrewing filler plug 14. 7.1.2 Disassembly-assembly of units of the hydrostatic steering controlmounted on tractors BELARUS-1221В.2 Dismounting of metering pump 2:...
  • Page 206 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 2) unscrew bolts 16 for mounting valve of reverse 17; 3) dismount valve of reverse 17; Disassembly-assembly of reverse valve: 1) having unscrewed locking nut 2 (Figure 7.7), unscrew lever 1 off control valve 5 and remove stopper 3;...
  • Page 207 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Valve is assemblied in reverse order: а) before assembly wash parts in diesel fuel and wipe with clean cloth; b) grease rings and control valve with thin layer of consistent lubricant LITOL-24; Checking proper assembly of reverse valve: а) lever 1 (Figure 7.7) must turn within stops 6 within angle of 96 degrees in extreme positions I and II (Figure 7.9), lever must be fixed with stopper 9 (Figure 7.7);...

  • Page 208: Steering Column

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 7.2 Steering column 7.2.1 Disassembly-assembly of steering column Tractor steering column without reverse steering station consists of pipe (13), (figure 7.10) and arm (1), which are secured with screws (40), nuts (33) and cotter pins (39). Inside pipe (13), in shock absorbers (18) on polyamide bushings (19) shaft (15) with rigidly fixed on it yoke (10) of cardan shaft is installed.
  • Page 209 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Shank (16) with pin (17) can move free along longitudinal grooves of shaft (15) to provide adjustment of steering wheel (26) by height. Shaft (15) is secured by nut (20) with check nut (21). Under nut (21) baffle (46) of turn indicator is installed.
  • Page 210 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 7.11 m) unpin and unscrew by wrench S = 27 мм nuts (38) on both sides of arm (1), and the pull out screws (40); n) remove pipe (13), made as one piece with yoke (12) and sector 35; o) unpin and disconnect tie-rod (41), from clamp 45 (Figure 7.12);...
  • Page 211 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 р) remove retainer ring (44) and clamp (45). Make assembly of steering column on the following order: 1 secure arm (1) (figure 7.13) in bench vice, lubricate axle (А) with grease LITOL-24; 2) put clamp (45) on axle (А) and lock with ring (44); Figure 7.13 3) insert bushing 2, (Figure 7.14) in arm 1;...
  • Page 212 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 7.15 7) put spring 42, (Figure 7.16), between clamp and pipe Figure 7.16 8) mount shock absorbers (18), (figure 7.17) up to shoulders in upper and lower end faces of pipe (13);...
  • Page 213 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 7.17 9) install bushing (19) in shock absorber (18) on the bottom side of pipe (13) to the end; 10) lubricate inside surface of bushing (19) with grease LITOL-24; 11) put on the end face of washer (32) grease LITOL-24 and press with hand to end face of bushing (19);...
  • Page 214 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 17) insert upper bushing (19), (figure 7.19) inside pipe (13), having first lubricated inside surface with grease LITOL-24; 18) put on pipe (13) baffle (46); 19) screw nut (20) and check nut (21) onthreaded shank of shaft (15); 20) press cardan connection to pipe (13), having selected plays between bushings, shock absorbers and end faces of pipe;...

  • Page 215: Disassembly-Assembly Of Steering Column Of The Reverse Control Station

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 26) secure sheath (29), (figure 7.21) with screws (4) (figure 7.10) in section 10.4 “Dismounting- mounting dashboard 80-3805010-Д1 of tractors Belarus-1025/1025.2/1025.3” to arm of dashboard; 27) screw up clamp (23), (figure 7.21), and close with cover (22); 28) install tie-rod (41), (figure 7.10), and connect it to clamp (45) using washer and cotter pin Figure 7.21 Checking if assembly was properly made:...
  • Page 216 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 7.22 Within tube 1, in shock absorbers 6 on plyamide bushings 7 shaft 8 with firmly secured cardan shaft is installed. In a way similar to forward travel steering column, shank with pin can move to maximum in longitudinal grooves of shaft 8, providing adjustment of steering wheel by height.
  • Page 217 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Tilting angle of the steering column and wheel are stepwise adjusted by means of tooth sector 15 (Figure 7.22), made as one piece with arm 2 of tube 1 and fixing elements 16 (Figure 7.24) with spring 17 and control lever 18 (Figure 7.22).
  • Page 218 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 d) unbend washers 5 (Figure 7.22); e) unscrew by 2-3 turns nuts 4 and unscrew screws 3 together with nuts 4; f) remove arm 2; g) unbend stop washer 14 (Figure 7.23) on the side of nuts 13; h) unscrew nut 13 and pull out bolt 12 together with second washer 14;...
  • Page 219 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 i) holding cardan 9 pull shaft 8 upwards to the end (Figure 7.22); j) screw to the end nut 10, then unscrew it by 0.5 – 1.0 turn and lock with check nut 11. Axial play of shaft 8 must not exceed 1 mm;...

  • Page 220: Disassembly Of Steering Rod

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 7.3 Disassembly of steering rod 1 – ball pin; 2 – upper insert; 3 – ring; 4 – sheath; 5 – insert; 6 – lower insert; 7 – ring; 8 – plug; 9 – wire; 10, 16 – joint body; 11 – nut; 12 – pipe; 13 – nut; 14 – nut; 15 – cotter pin Figure 7.27 Steering rod Make disassembly of steering tie-rod (figure 7.17) in the following order: a) unscrew by 1-2 turn nuts (11) и...

  • Page 221: Cabin

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8 CABIN Cabin of tractors BELARUS-1221.2/1221В.2/1221.3/1221.4 has protective properties providing operator safety during tractor turn over in emergency situations. The cabin is equipped with ventilation and heating systems. Noice and vibration parameters on the operator’s working seat meet requirements set to cabins of tractors of this series.
  • Page 222 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) unscrew bolts 25 and remove pedals 1 and 2, of left- and right-side brakes, (Figure 4.130) section 4.6.4 “Dismounting levers of brakes”; f) dismantle clutch control by doing the following: 1) disconnect pipeline 35, flexible sleeve 15 (Figure 8.1), by unscrewing cap nuts; 2) disconnect pusher of main cylinder on reversal 40 from 39, by pulling out pin 11;...
  • Page 223 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 8.2 g) dismount fuel supply control, and to do this: 1) unpin pins and dismount tie-rod 28 of pedal 25 for fuel supply control, (Figure 3.18) section 3.12 “Disassembly-assembly of fuel supply control, mounted on tractors BELARUS-1221В.2” and (Figure 3.19) section 3.13 “Disassembly-assembly of fuel supply control, mounted on tractors BELARUS- 1221.2/1221.3”;...
  • Page 224 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 i) disengage cooling loop of air conditioner by means of quick-disconnect connections BRS-81 2 (Figure 8.13) section 8.8 “Dismounting-mounting air conditioner on tractors BELARUS- 1221.3/1221.4”, and undock heater hoses; j) unpin four cotter pinа 8, nuts М16 (Figure 8.5); k) unscrew four nuts 7 (М16), remove washers 6 and bottom vibration isolaters 5;...
  • Page 225 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 А-А Б-Б 1 – washer; 2 – bolt (М16); 3 – cup of vibration isolator; 4 – upper vibration isolator; 5 – lower vibration isolator; 6 – washer; 7 – nut; 8 – cotter pin. Figure 8.5...

  • Page 226: Dismounting-Mounting Of Facia Of Tractor Belarus-1221.2/1221В.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.2 Dismounting-mounting of facia of tractor BELARUS-1221.2/1221В.2 Figure 8.6 Facia of tractors Dismount facia, and to do this perform the following: а) dismount hood 1 (Figure 8.6), and to do this: 1) pull lever of lock 2; 2) lift hood 1 up and fix tie-rod 3 in opening of arm 4;...

  • Page 227: Dismounting-Mounting Facia Of Tractors Belarus-1221.3/1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.3 Dismounting-mounting facia of tractors BELARUS-1221.3/1221.4 1 – side plate; 2 – side plate; 3 – lock; 4 – fixing element; 5 – support; 6 – mask; 7 – control rope; 8 – nut; 9 – loop; 10 – hood; 11 – monocyclon; 12 – control rope; 13 – cotter pin; 14 – pneumatic lift; 15 –...
  • Page 228 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To dismount the facia do the following: а) dismantle side panels 1 and 2 (Figure 8.7), and to do this: 1) pull levers of locks 3 down; 2) raise side panels 1 and 2 up and pull to remove fixing elements from supports 5; b) remobe mask 6, and to do this: 1) pull control rope 7;...

  • Page 229: Disassembly-Assembly Of Facia Panels Of The Right-Side Panel

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.4 Disassembly-assembly of facia panels of the right-side panel а) unscrew bolts (10) and (11), remove cover (3) (figure 8.8); b) unscrew bolts (11) and remove panel (1); c) unscrew bolts (11) and remove arm (2). Make assembly in sequency reverse to disassembly.

  • Page 230: Disassembly-Assembly Of Panels 85-6702550 Of Front Cabin Wall

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.5 Disassembly-assembly of panels 85-6702550 of front cabin wall а) 1) unscrew bolt (6) (figure 8.9)) (section D-D), (7) (section В-В), remove left-side panel (4) 80- 6700320; b) unscrew bolts (5) (section Н-Н), (7) (section В-В), remove right-side lower panel (1) 85- 6700330, c) remove right-side higher panel (2) 85-6700340;...

  • Page 231: Disassembly-Assembly Of Rear Wheels' Fenders

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.6 Disassembly-assembly of rear wheels’ fenders 8.6.1 Disassembly-assembly of plastic fenders of tractors’ rear wheels To dismount fender do the following: a) take cups (2) off bolts (5) (figure 8.10); b) unscrew bolts (4) and (5); c) remove bolts (4), (5) with washers (6), (7) and (8);...

  • Page 232: Disassembly-Assembly Of Metal Fenders Of Tractors' Rear Wheels

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1 – sealant; 2 – cup; 3 – fender; 4 – bolt М8-6gx20.88.35.019 State Standard GOST 7796-70; 5 – bolt М6-6gx20.88.35.019 State Standard GOST 7798-70; 6 – washer С6.01.019 State Standard GOST 6958-78; 7 – washer С8.01.019 State Standard GOST 6958-78; 8 – washer 8Л Industry Standard ОСТ...
  • Page 233 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Make assembly in reverse sequence: a) on cabin snug up fender (19) by means of bolts (12) and washers (15) and (17); b) snug up flap (18) on cabin by means of bolts (9), (12) and washers (14), (15) and (17); c) connect fender (19) and flap (18) by means of bolts (10), nuts (13), washers (14) and (16);...

  • Page 234: Disassembly-Assembly Of Front Wheels' Fenders Of Tractors Belarus-1221 And Modifications

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.7 Disassembly-assembly of front wheels’ fenders of tractors BELARUS-1221 and modifications а) unscrew bolts 11 (Figure 8.12) and remove fenders 12; b) unscrew bolts 4 and remove posts 5 and 13; с) unscrew bolts 2 and remove supports 1 and bushings 14. Make assembly in sequence reverse to disassembly.

  • Page 235: Dismounting-Mounting Of Air Conditioner (Option) Mounted On Tractors Belarus- 1221.3/1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.8 Dismounting-mounting of air conditioner (option) mounted on tractors BELARUS- 1221.3/1221.4 ATTENTION! Any works that involve disconnection of cooling loop elements, must be performed by trained personnel and use special equipment for maintenance of air conditioners. When set of quick-connecting connections BRS-81 is available, cooling loop can be disconnected without pumping out cooling agent.
  • Page 236 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 8.14 Dismounting air conditioner from engine Deutz. b) if set of quick-connecting connections BRS-81 (2) is available, undock cooling loop by means of wrenches “S29” and “S30”. с) while preventing connection pipes (fittings) of air conditioner hoses from unwinding, dismount compressor (3), filter-dehydrator (4) and condenser (5).
  • Page 237 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 d) level of cooling fluid in the radiator of diesel cooling system must drop down; e) fill radiator of diesel cooling system with cooling fluid up to required level (up to mark «МАХ» on the expansion tank). Air condition system is assembled in reverse sequence.

  • Page 238: Check And Adjustment Of Tension Of The Belt Of Air Conditioner Compressor Drive

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 8.9 Check and adjustment of tension of the belt of air conditioner compressor drive Check of tension of the belt of air conditioner compressor drive: Tension of belt 1 (figures 8.15, 8.16) of air conditioner compressor drive is considered normal if sag of its branch “engine crank shaft pulley –...
  • Page 239 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 8.16 Check and adjustment of tension of the belt of air conditioner compressor drive of diesel Deutz. Adjustment of tension of the belt of air conditioner compressor drive: Adjustment of belt tension (1) (figures 8.15, 8.16) must be made by turning compressor on rotation axle “А”...

  • Page 240: Hydraulic Hinge System

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 9 HYDRAULIC HINGE SYSTEM 9.1 Disassembly-assembly of hydraulic hinge units. Figure 9.1...
  • Page 241 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly-assembly of hydraulic hoist (without dismounting it from tractor) 1) lower the hinge to extreme bottom position; 2) drain oil from body 1 of hydraulic hoist (Figure 9.1), gavong unscrewed drain conical plug 23 on the left side of hydraulic hoist;...
  • Page 242 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Hydraulic hoist is assembled in reverse sequence. Before assembly sheck state of all sealing elements, rings 16 pressed in shells in particular, three rubber and four plastic rings in distributor grooves – twisting of rings and their mechanical damage (cuts, cracks, delamination) are not allowed, lubricate sealants and surfaces that contact them during assembly, with fat grease.
  • Page 243 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) remove cotter pin on roller 41, that fastens position link 38; d) pull out roller 41 holding position lever 42, until sealing rings doesn’t go out of hollow roller of power link 36; e) remove position lever, having unscrewed fastening bolt; - on bottom bushing 37 (Figure 9.1) (leakage between bushing and body) and on bottom roller 35 (leakage between bushing and lever 21): а) unpin and remove from lever 21 front end of power tie-rod 20;...
  • Page 244 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 b) extract spring 11, thrust 9 and retarding valve 4; с) unscrew two boltа for fastening cover 24, remove cover as an assembly with bushing 25 and pusher 26 and extract control valve 3 from the side of removed cover, without removing retaining ring from it;...
  • Page 245 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 o) insert relief valve 2 inside body 1 of distributor, check how easily it rotates inside body – movement must take place under its own weight or upon light touch of little finger of hand; р) put spring 15 and screw plug 14, having checked state of rubber sealing ring on it;...
  • Page 246 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 1-body, 2-stop ring, 3-plunger, 4-guide ring 5-collar, 6-mud retainer. Figure 9.3 Plunger cylinder design: с) turn plunger around axis so that cut on the stop ring faced the opening; d) put screwdriver inside opening and place one edge of stop ring inside mounting groove; e) while retaining the ring inside mounting groove, rotate plunger until stop ring entirely moves inside mounting groove;...

  • Page 247: Disassembly-Assembly Of Hydraulic System Assemblies

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 9.1.1 Disassembly-assembly of hydraulic system assemblies Dismounting-mounting of distributor RP 70-1221: а) disconnect control tie-rods 1 (Figure 9.4), 2 from distributor 3; b) disconnect from distributor (3) pressure oil line (4), oil lines of outlets 5, 6, 7, 8, 9, 10, drain oil line 11;...
  • Page 248 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly-assembly of pump drive on oil tank dismounted from tractor: а) disconnect from pump suction branch pipe (16) and pressure conduit (4) (Figure 9.4); b) unscrew bolts 2 (Figure 9.5) and nuts 13 for fastening pump 1 to oil tank 17 (Figure 9.6); с) dismount pump 1 (Figure 9.5) and spacer 3;...
  • Page 249 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 9.6 NOTE: If drive is not equipped with handle, yoke 15 (Figure 9.6) on shaft (16) is not fixed, and shaft (16) is fastened by bolt 18 (Figure 9.7) to oil tank 17. Figure 9.7 Dismounting oil tank of tractor with cabin dismantled (for hydraulic system with distributor RP 70-1221): а) put vessel with at least 25 litres capacity under drain bolt (10) in bottom of oil tank (1),...
  • Page 250 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) disconnect collars of drain hose (12) on the oil tank and on hydraulic hoist (2) and remove it having first released the fastening. f) disconnect sleeves (6) of rear left-side outlets of distributor and remove them, having first released the fastening.
  • Page 251 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) to avoid ingress of foreign particles inside internal cavity of oil lines, wrap up ends of all dismounted oil lines with polyethylene and place them on clean surface. d) unscrew three nuts (12) that fasten distributor arm (13) to oil tank (15) and dismount distributor (3) together with arm (13;...
  • Page 252 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) disconnect sleeves (13) of right-side rear outlets from pipelines in the area of oil tank, and remove them, having first released fastening. d) disconnect pressure sleeve (7) from distributor and hydraulic hoist (2) and dismount it, having first released fastening.

  • Page 253: Disassembly-Assembly Of Rear Hinge Device (Rhd) Of Tractor Equipped With Hydraulic Hoist

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 9.2 Disassembly-assembly of rear hinge device (RHD) of tractor equipped with hydraulic hoist Disassembly and assembly of RHD presents no problems, except for disassembly and assembly of gear braces (1) (Figure 9.11) (see below). 1-braces; 2-lower tie-rods; 3-lifting lever; 4, 5-bolts of brace cover. Figure 9.11...
  • Page 254 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly of gear brace: а) disconnect brace from lifting lever 3 and lower tie-rod 2 (Figure 9.11); 2) unscrew four bolts 4, 5 (Figure 9.11) and remove cover 2 (Figure 9.12), as an assembly with handle 3;...

  • Page 255: Disassembly-Assembly Of Lifting Type Tractive-Drawing Device (Tdd) With Hydraulic Hoist

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 9.3 Disassembly-assembly of lifting type tractive-drawing device (TDD) with hydraulic hoist Disassembly of TDD is made in the following sequence, see (figures 9.13, 9.14, 9.15, 9.16): а) remove clip 1 (figures 9.13, 9.15), having first unscrewed nuts 2 (Figure 9.15); b) pull out pin, having first unscrewed bolts (4) and removed plate 5 (Figure 9.14);...
  • Page 256 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 9.14 g) knock out pin 14 (Figure 9.16), screw tie (15) inside left-side guide (10) and, having pulled out bushing (16), remove tie (15) through openings in right-side guide (11), having first screwed it out of left-side guide;...
  • Page 257 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 9.16 Make assembly in reverse sequence, and: а) screw pins 18, 19 and 20 (Figure 9.14) with threaded part with tough thread in rear axle body – for normal thread, as from the opposite side the flat is increased b) when installing tie 15 (Figure 9.16), screw it in left-side guide (10), and having installed bushing (16), unscrew to the end with shoulder inside bushing;...

  • Page 258: Disassembly-Assembly Of Semi-Frame And Ballast

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 10 DISASSEMBLY-ASSEMBLY OF SEMI-FRAME AND BALLAST 10.1 Disassembly-assembly semi-frame tractors BELARUS- 1221.2/1221В.2/1221.3/1221.4 Disassembly semi-frame in the following sequence: а) unscrew and extract bolts 5 and washers 6 (Figure 10.1); b) extract bushings 4 and disconnect spars 1 and 2. Make assembly of semi-frame in sequency reverse to disassembly: а) put in place spars 1 and 2;...

  • Page 259: Disassembly-Assembly Of Ballast

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 10.2 Disassembly-assembly of ballast а) remove string 5, (Figure 10.2), having unscrewed nut 14 with washers 6 and 13; b) dismount loads 4; с) unscrew and extract bolts 10 and 16 with washers 12 and 19 and nuts 15; d) dismount eyelet 8 with pivot 1;...

  • Page 260: Disconnection Of Front Beam From Engine Deutz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 10.3 Disconnection of front beam from engine Deutz To disconnect front beam (Figure 10.3) from engine do the following: а) unscrew bolts 3, 5 and 6, that fasten front beam 1 to diesel casing; b) undock front beam off engine; с) extract two bushings 4 from beam, if they are easily extracted.

  • Page 261: Electrical Equipment

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11 ELECTRICAL EQUIPMENT 11.1 Dismounting-mounting of elements of the electrical equipment for engines mounted on tractors BELARUS-1221.2/1221В.2/1221.3/1221.4 with engines MMZ и Deutz Electrical equipment of the engine includes: а) engine harness, harness of voltage converter (starting system 24 V), bunch of glow plugs, designed for connecting assemblies and elements of the engine in its electrical part;...

  • Page 262: Dismounting Elements Of Electrical Equipment Of Engine (Mmz) Mounted On Tractors Belarus-1221.2/1221В.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.1.1 Dismounting elements of electrical equipment of engine (MMZ) mounted on tractors BELARUS-1221.2/1221В.2 Figure 11.1 а) to dismount harness of electrical equipment for engine do the following: 1) disconnect from generator 33 (Figure 11.1) terminals “14V”, “D” and “W”; 2) disconnect wires from sensor of air purifier clogging 14, situated in front of air filter;...

  • Page 263: Dismounting Electrical Equipment Elements Of Engine (Mmz) Mounted On Tractors Belarus-1221.3

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) to dismount harness of voltage converter 4 (Figure 11.1) (start-up system 24 С) do the following: 1) disconnect from generator 33 terminals “14V” and “D”; 2) unscrew figure nut 28 and remove starter housing, unscrew nut М10 and disconnect wire; 3) disconnect carrier socket “А”...
  • Page 264 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 11.2 Engine MMZ To dismount harness of engine electrical equipment 21 (figures 11.2, 11.3) perform operations given in item “а” of section 11.1.1 “Dismounting electrical equipment elements of engine (MMZ) mounted on tractors BELARUS-1221.2/1221В.2”; Figure 11.3 Engine Deutz...
  • Page 265 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To dismount harness of glow plugs 30 (figures 11.2, 11.3) perform operations given in item “а” of section 11.1.2 “Dismounting electrical equipment elements of engine (MMZ) mounted on tractors BELARUS-1221.3” Replacement of some elements of engine electrical equipment: To replace box of fuses 20 dismantle all incoming wiring and unscrew two screws М6;...

  • Page 266: Disassembly-Assembly Of Storage Battery Compartment And Starting System Elements Mounted On Tractors Belarus-1221.2

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.2 Disassembly-assembly of storage battery compartment and starting system elements mounted on tractors BELARUS-1221.2 Disassembly-assembly of storage battery compartment and elements of engine starting system is, as a rule, connected with failure of some elements. It includes: а) replacement of “ground”...
  • Page 267 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To replace two storage batteries 1 (Figure 11.4), do the following: а) remove terminals from storage batteries, loosening bolts 13; b) unscrew nuts of clamps 11, that fix storage batteries; с) pull out the batteries. Make mounting and erection in reverse sequence, with torques borne in mind: а) torque terminals of «ground»...

  • Page 268: Disassembly-Assembly Of Storage Battery Compartment And Starting System Elements Mounted On Tractors Belarus-1221В.2/1221.3/1221.4 With Engines Mmz And Deutz

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.3 Disassembly-assembly of storage battery compartment and starting system elements mounted on tractors BELARUS-1221В.2/1221.3/1221.4 with engines MMZ and Deutz» Disassembly-assembly of storage battery compartment and elements of engine starting system is, as a rule, connected with failure of some elements. It includes: а) replacement of “ground”...
  • Page 269 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 11.5 Disassembly-assembly of storage battery compartment and elements of start-up system.

  • Page 270: Dismounting-Mounting Of Elements Of Transmission Electrical Equipment

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.4 Dismounting-mounting of elements of transmission electrical equipment Dismounting of transmission harness on tractor BELARUS-1221 and its modifications: а) disconnect connector “L” of harness 1 (Figure 11.6) from connector of dashboard, situated on front cabin wall; b) dismantle harness 1 (Figure 11.6), and disconnect its carrier sockets from: 1) switch of start interlock а...
  • Page 271 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Dismounting of air pressure sensor 2 (Figure 11.6): а) disconnect coupling carrier socket of harness 1 (Figure 11.6 view “В”); b) unscrew sensor 2; с) remove sealing ring 11; When installing new sensor torque it to from 20 to 25 N m, having put new sealing ring 11 to provide air tightness.
  • Page 272 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 11.7 When tractor is not equipped with pneumatic system. Figure 11.8 Specific feature of electrical equipment of tractors BELARUS-1221.4...

  • Page 273: Control Of Tractor Units

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.5 Control of tractor units 11.5.1 Control of rear hinge device (RHD) 1221 – 8700610 mounted on tractors BELARUS- 1221.2/1221В.2 To replace control panel 3 or electronic unit 10 (Figure 11.9) remove cover of right side panel, see section 8.4 “Disassembly-assembly of facia panels of right side board”...

  • Page 274: Operations To Be Performed When Dismounting/Mounting Cabin

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To replace electronic unit 10 perform the following actions: а) unscrew bolts 11 with nuts 12 for fastening unit 10 to right side panel; b) disconnect twenty five-contact connector of harness 13 from unit 10; с) dismount electronic unit 10;...
  • Page 275 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...
  • Page 276 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.5.3 Control of DI and FDA 1221-8700410 (electrical part) mounted on tractors BELARUS- 1221.3 To replace switch ВК 12-51 (sensor of turn angle of drive wheels), mounted on FDA left side (during forward movement of tractor) do the following: а) turn drive wheels to the end left (right) side to the end;...
  • Page 277 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Installation of new switch ВК 12-51 is made in reverse order. Torque of switch 2 - (45±5) Nm. Number of adjustment spacers (1) is provided by adjustment of switch actuation (2). Actuation of switch (2) (contacts opening) must take place when drive wheels turn to angle over (13±2)° to any side (decrease of the number of adjustment spacers leads to reduction of switch actuation angle).
  • Page 278 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...

  • Page 279: Control Of Di, Fda And Front Pto 1221-8700210-Д (Electrical Part) Mounted On

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.6 Control of DI, FDA and front PTO 1221-8700210-Д (electrical part) mounted on tractors BELARUS-1221.3 To replace switch ВК 12-51 (sensor of turn angle of drive wheels), mounted on FDA left side (during forward movement of tractor) do the following: а) turn drive wheels to the end left (right) side to the end;...
  • Page 280 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Installation of new switch ВК 12-51 is made in reverse order. Torque of switch 2 - (45±5) Nm. Number of adjustment spacers (1) is provided by adjustment of switch actuation (2). Actuation of switch (2) (contacts opening) must take place when drive wheels turn to angle over (13±2)° to any side (decrease of the number of adjustment spacers leads to reduction of switch actuation angle).
  • Page 281 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...

  • Page 282: Control Of Di, Fda, Pto And Reduction Gear 1221-8700250-Д (Electrical Part) Mounted On Tractors Belarus 1221.3

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.7 Control of DI, FDA, PTO and reduction gear 1221-8700250-Д (electrical part) mounted on tractors BELARUS 1221.3 To replace switch ВК 12-51 (sensor of turn angle of drive wheels), mounted on FDA left side (during forward movement of tractor) do the following: а) turn drive wheels to the end left (right) side to the end;...
  • Page 283 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Installation of new switch ВК 12-51 is made in reverse order. Torque of switch 2 - (45±5) Nm. Number of adjustment spacers (1) is provided by adjustment of switch actuation (2). Actuation of switch (2) (contacts opening) must take place when drive wheels turn to angle over (13±2)° to any side (decrease of the number of adjustment spacers leads to reduction of switch actuation angle).

  • Page 284: Operations To Be Made When Dismounting-Mounting The Cabin

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.7.2 Operations to be made when dismounting-mounting the cabin: а) before dismounting the cabin disconnect connectors of cabin harness (8) from engine harness (7) and transmission harness (18); b) After mounting the cabin connect terminals of cabin harness (8) to engine harness (7) and transmission harness (18).
  • Page 285 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...

  • Page 286: Control Of Di And Fda, Mmz Or Deutz, (Electrical Part) Mounted Ontractors Belarus 1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.8 Control of DI and FDA, MMZ or Deutz, (electrical part) mounted ontractors BELARUS 1221.4 To replace switch ВК 12-51 (sensor of turn angle of drive wheels), mounted on FDA left side (during forward movement of tractor) do the following: а) turn drive wheels to the end left (right) side to the end;...

  • Page 287: Operations To Be Performed When Replacing Engine

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Installation of new switch ВК 12-51 is made in reverse order. Torque of switch 2 - (45±5) Nm. Number of adjustment spacers (1) is provided by adjustment of switch actuation (2). Actuation of switch (2) (contacts opening) must take place when drive wheels turn to angle over (13±2)° to any side (decrease of the number of adjustment spacers leads to reduction of switch actuation angle).

  • Page 288: Operations To Be Made When Dismounting-Mounting The Cabin

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.8.2 Operations to be made when dismounting-mounting the cabin: а) before dismounting the cabin disconnect connectors of cabin harness (8) from engine harness (7) and transmission harness (18); b) After mounting the cabin connect terminals of cabin harness (8) to engine harness (7) and transmission harness (18).
  • Page 289 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4...

  • Page 290: Control Of Engine Deutz 1221.4 - 8700910-Б, Mounted On Tractors Belarus 1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.9 Control of engine Deutz 1221.4 – 8700910-Б, mounted on tractors BELARUS 1221.4 To replace sensor 5 of cooling fluid level do the following: а) disconnect connector of harness 3 (Figure 11.19) from sensor 5; b) unscrew sensor 5 from tank and remove ring.

  • Page 291: Operations To Be Performed In Replacing Engine

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To replace engine control elements mounted on panel 8, do the following: а) extract sex screws 9 for fastening panel 8; b)extract panel 8 with elements fixed to it and connected harness 2, 10 from seat on the right-side post plate;...

  • Page 292: Control Of Engine Mmz 1221.4 - 8700910-М, Mounted On Tractors Belarus 1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.10 Control of engine MMZ 1221.4 – 8700910-М, mounted on tractors BELARUS 1221.4 To replace engine control elements mounted on panel 6, do the following: а) unscrew sex screws 9 for fastening panel 6; b)extract panel 6 with elements fixed to it and connected harness 2, 10 from seat on the right-side post plate;...

  • Page 293: Operations To Be Performed In Replacing Engine

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 To replace unit 12 of switching and protection of series 1000 do the following: а) disconnect connectors of harness 3, 8 and tips of harness 1 from unit 12; b) unscrew four screws 11 for fastening unit 12 to arm 10; с) remove unit 12 from arm 10;...

  • Page 294: Dismounting-Mounting And Disassembly-Assembly Of Dashboard

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.11 Dismounting-mounting and disassembly-assembly of dashboard 11.11.1 Dismounting-mounting of dashboard 80-3805010-Д1 mounted on tractors BELARUS-1221.2/1221В.2 а) dismount petticoat panels of control station, see section 8.5 “Disassembly-assembly of panels 85-6702550 on front cabin wall”; b) disconnect from dashboard connectors 1 (Figure 11.21) on engine and transmission; с) disconnect from carrier socket 2, dashboard harness the carrier socket of cabin roof harness;...
  • Page 295 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly-assembly of dashboard: To completely disassembly dashboard first dismount it from tractor (see section 11.11.1 “Dismounting-mounting dashboard 80-3805010-Д1 mounted tractors BELARUS- 1221.2/1221В.2)” above, and then perform the following: а) unscrew screws 1 (Figure 11.22), 2 and quick-dismounting screw 3; b) unscrew screws 4, 5 that fasten panel to relay 6;...
  • Page 296 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 e) to replace sealant 10 first unscrew screws 1 and 2, raise dashboard 4 and replace sealant; Replacing other components see (Figure 11.23); а) to replace boxes of fuses 1, 3, 4 disconnect wires from them, then extract boxes from fixing extensions of cover and replace them.
  • Page 297 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 ATTENTION: When connecting wires anew follow follow electrical wiring diagram given in the operating manual of this tractor. n) to replace of combination of devices 33 unscrew nuts that fasten device, remove retaining clamps, then remove device on the face side of dashboard panel; o)to replace switch of emergency alarm 26, disconnect from it harness carrier socket, then switch device on the side of face surface of dashboard panel 21 and replace it;...

  • Page 298: Dismounting Of Dashboard Mounted On Tractors Belarus-1221.3/1221.4

    Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 11.11.2 Dismounting of dashboard mounted on tractors BELARUS-1221.3/1221.4 а) dismount petticoat panels of control station, see section 8.5 “Disassembly-assembly of panels 85-6702550 on front cabin wall”; b) disconnect from dashboard connectors 1 (Figure 11.21) on engine and transmission on the basis of dashboard;...
  • Page 299 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Disassembly-assembly of dashboard To disassembly dashboard first dismount it from tractor (see section 11.11.2 «Dismounting- mounting dashboard mounted on tractors BELARUS-1221.3/1221.4. To completely disassembly dashboard do the following: а) unscrew two screws 1 (Figure 11.25), two screws 5, as well as and two quick-dismounting screw 9;...
  • Page 300 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 с) replace three boxes of fuses and replace cover. To replace relay installed on bar 2 (Figure 11.25) do the following: а) remove bar 2 and to do this: 1) unscrew screw 5 and screw 8, having disconnect from relay carrier socket and wires; 2) unscrew screws for fastening corresponding relays (one for each) and replace relay.
  • Page 301 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 Figure 11.26 f) to replace plate 13 unscrew nut 14 that fastens switch of starter 16 and replace the plate; g) to replace key switches 15 disconnect carrier socket of harness or wires, connected to corresponding switch, then remove switches on the side of panel 21 face surface of dashboard, and replace them;...
  • Page 302 Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4 n) to replace switch of emergency alarm 26, disconnect from it harness carrier socket, then remove switch device on the side of face surface of dashboard panel 21 and replace it; o) to replace plug 27 slightly squeeze fastening extension of plug on the side of face surface of dashboard panel 21 and replace it;...

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