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MTW Belarus 90 Operating Manual

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BELARUS
90/92
90 – 0000010 РЭ
OPERATING
MAINTENANCE
WORK-SHOP MANUAL
2008
https://tractormanualz.com/

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  • Page 1 BELARUS 90/92 90 – 0000010 РЭ OPERATING MAINTENANCE WORK-SHOP MANUAL 2008 https://tractormanualz.com/...
  • Page 2 The manual is intended for tractor drivers, operating Belarus tractors. Due to policy of MTW PA aimed at constant updating of items being manufactured, changes, which are not reflected in present edition, can be made in the design of some assembly units and parts of Belarus tractor.

  • Page 3: For The Attention Of Operator

    FOR THE ATTENTION OF OPERATOR! 1. Before tractor operation thoroughly study the present operating manual and strictly follow its requirements. 2. Use seasonal diesel fuel according to the manual. Reduce engine oil change intervals in half, if the diesel fuel contains up to 1% of sulfur. 3.

  • Page 4: Table Of Contents

    БЕЛАРУС-90/92 Содержание CONTENTS FOR THE ATTENTION OF OPERATOR INTRODUCTION Accepted abbreviations and legend International symbols Section A. SAFETY PRECAUTIONS - General provisions - Safety requirements during tractor operation - Safety requirements during maintenance - Safety requirements in operating and maintaining electrical equipment - Hygiene requirements - Fire safety requirements Section B.
  • Page 5 БЕЛАРУС-90/92 Содержание - Mounting machinery on tractor Towing-hooking device TSU-1Zh - Front ballast weights Mechanism for hitch retention in transport position - Control of hydraulic system and hitch attachment without draft control unit - Specific character of tractor operation with machines that require driving from rear PTO - Operation with trailers and trailed machines - Application of auxiliary tractor equipment...
  • Page 6 БЕЛАРУС-90/92 Содержание - Rear PTO - Front driving axle - Steering - Hydraulic lift linkage - Electrical equipment Section I. TRACTOR TRANSPORTATION AND TOWING Section J. TRACTOR STORAGE Section K. DISPOSAL OF TRACTOR Annex L. Wiring Diagram https://tractormanualz.com/...

  • Page 7: Introduction

    Belarus – 90/92 Operating manual INTRODUCTION Wheel universal row-crop tractors Belarus 90/92 fall into the drawbar category 1.4 and are designed for executing wide range of agricultural works ranging from tillage to harvesting and transport operations; they can be used in forestry and municipal services, construction and industry.

  • Page 8: Accepted Abbreviations And Legend

    Introduction Belarus – 90/92 Operating manual Accepted abbreviations and legend — clutch coupling — differential lock — front driving axle — gearbox — glow plug — hydraulic lift linkage — Hydrostatic Power Steering LOHE — liquid-to-oil heat exchanger — maintenance ОЕСD —...

  • Page 9: International Symbols

    Introduction Belarus – 90/92 Operating manual International symbols The manufacturer uses standard International symbols related to the application of instruments and controls. Symbols and their meanings are given below. — See Manual — Control operating direction — Brake — Fast —...
  • Page 10 Introduction Belarus – 90/92 Operating manual — Control valve spool "Lift" — Windshield washer Position — Control valve spool "Drop" — Windshield wiper Position — Control valve spool "Float" — Rear screen wiper Position — Oil pressure in gearbox — Tractor trailer turn signal —...

  • Page 11: Section A. Safety Precautions

    Section A. Safety precautions Belarus – 90/92 – Operating manual Section A. Safety precautions Strict observance of safety precautions parking brake, pull out starter switching and precise abidance by tractor control key and switch off battery disconnect and maintenance directions guarantee switch.

  • Page 12: Safety Requirements During Maintenance

    Section A. Safety precautions Belarus – 90/92 – Operating manual care when running the tractor. Choose • Make sure that PTO drive end guard safe speed, corresponding to road is installed and, if PTO is not used, conditions, in particular during cross- place the cap of PTO drive end into its country terrain driving, driving across position.

  • Page 13: Safety Requirements In Operating And Maintaining Electrical Equipment

    Section A. Safety precautions Belarus – 90/92 – Operating manual • Keep tractor and its equipment, equipped with fire fighting means. especially brakes steering • Do not allow staining of collector and equipment, in operable condition for the muffler with dust, fuel, straw, etc. safety of your own and people around.

  • Page 14: Section B. Technical Data

    Section B. Technical data Belarus – 90/92 Operating manual Section B. TECHNICAL DATA Weight and overall dimensions Description А Length, mm, general (with loads) 4120 4120 without loads 3840 3930 along wheels 3650 3740 В Width, mm 1970 1970 С Height, mm 2780 2800 D Wheel base,mm...
  • Page 15 Section B. Technical data Belarus – 90/92 Operating manual Serial tractor number is duplicated on the front right-side longitudinal (or on the right-side of front ballast loads). Serial diesel number (is duplicated on the name plate on the name plate of diesel fixed to the cylinder block right side.).
  • Page 16 Section B. Technical data Belarus – 90/92 Operating manual Number of transmission (on the back axle casing from behind). Number of front driving axle (on the casing from the front). https://tractormanualz.com/...

  • Page 17: Engine And Its Systems

    Section B. Technical data Belarus – 90/92 Operating manual Diesel engine Diesel engine model D-243.1 Type 4-stroke, in-line, with natural aspiration Number of cylinders Method of mixture formation Direct fuel injection Compression degree (calculated) Diameter of cylinder,mm 110 (4,32) Piston stroke,mm 125 (4,92) Displacement volume, l 4,75 (290)

  • Page 18: Technical Data Of Assembly Units

    Section B. Technical data Belarus – 90/92 Operating manual Diesel fuel supply system Adjustment revision steering Type: combined, with oil cooler wheel: Minimal oil pressure: · tilt steering wheel – from 25° to 40° 0,08 МPа (0,8 kgs/cm ) at 600 rev per with locking in 5°;...

  • Page 19: Gearbox

    Section B. Technical data Belarus – 90/92 Operating manual Gear box Type (basic kitting), 9/2 mechanical, back-geared. Rated speed of tractor movement in km/h at tractor BELARUS 90/92 (with tires 15.5R38) https://tractormanualz.com/...
  • Page 20 Section B. Technical data Belarus – 90/92 Operating manual shafting; 33 — roller bearing; 34 — bronze plug; 35 — Picture. а, б Gear box: axle drive gear of II gearing pass; 36 — axle drive 1 — screw of countershaft; 2 - countershaft; 3 — main gear of I gearing pass;...
  • Page 21 Section B. Technical data Belarus – 90/92 Operating manual double gear 46 (pic. а). Shifting lever of back bronze plug 31, that composes as support of gear is derived in the tractor cabin. By forward internal shafting 32; from outside on the gear movement of lever the back gear is switched wheel is fixed the impeller 29 that serves for on, by backwards movement it is off.

  • Page 22: Rear Axle

    Section B. Technical data Belarus – 90/92 Operating manual power take off on the tractor, reducing gear self-coupling of gears under load. and drive transfer box of the front axle of Pass of gearing shifting is realized with lead tractors Belarus-92. 48, connected with bead 47, in which is fastened the plug 50, moving the gear 36.
  • Page 23 Section B. Technical data Belarus – 90/92 Operating manual 27 — clutching axle of GD; 28 — left bearing cup; Rear axle: 29 —drive gear bearings of final gears; 30 — left 1 — casing; 2 — bearing (217А) of half-axle; 3 differential bearing (7215А);...
  • Page 24 Section B. Technical data Belarus – 90/92 Operating manual Brakes looking gear end. Main brakes: rear wheel: double-disc, dry, with mechanical servo-drive. Disc diameter Hydraulic system 204 mm. Parking brake: disc, dry, with mechanical Type: universal, aggregative, with hand drive. Disc diameter: 180 mm. autonomous power cylinder.

  • Page 25: Wheels

    Section B. Technical data Belarus – 90/92 Operating manual Pneumatic system Wheels Compressor Front: 9,00-20 (9,00R20) with front axle, 11,2-20 (11,2R20) with FDA - 72 Type: one-cylinder, air-cooled. Rear: 15,5R38; https://tractormanualz.com/...

  • Page 26: Section C. Controls And Instruments

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Section C. Controls and Instruments Bottom block of fuses; 16. Index of pressure of oil in diesel engine; Handle of diesel engine stop; 17. Multipurpose switch, (index of turns, high Lever of fuel submission control;...

  • Page 27: Starter And Instruments Switch

    Section C. Controls and Instruments Belarus – 90/92 Operating manual 30, 32. Pedals of brakes; 37. Lever of switch of lowering reducer. It has 31. Connecting rod of brake pedals; two positions: 33. Lever of switching of gears; rear – “direct gear”, forward – “lowering 34.

  • Page 28: Self-Contained Instruments

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Self-contained instruments Index of temperature of cooling liquid(1) Index (1) shows temperature of cooling liquid of diesel engine in degrees. Scale has three zones: - working – 80 - 100º С – green colour; IMPORTANT! If device shows absence of - warning –...

  • Page 29: Fuses

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Fuses Two blocks of fuses are installed in electric chains. 12 safety locks protect from overloads the following electric chains of tractor: 1 —indexes of turns, 15 А; 2 — feed of control-measuring instruments, 7,5 А; 3 —...

  • Page 30: Electrical Equipment Connection Elements

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Electrical equipment connection elements Standard seven pin socket is intended for connection of consumers of current of transport machine or hook-on agricultural instrument. It is installed on rear support of cabin. Pin plug of plait of wires of hook-on machines is connected to socket.

  • Page 31: Gear Box Control

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Gear box control Gear box - 9/2 mechanical with mechanical lowering reducer. Switching of gears is carried out by lever (2) in accordance with scheme of switching. Before to include gear, include necessary (level). IMPORTANT! Inclusion of ranges and gears is carried out by one lever (2), note that at the first turn it is necessary to include range (first or second).

  • Page 32: Front Driving Axle Control

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Front driving axle control Lever of control (1) has three fixed positions: • «Front driving axle is switched off» — extreme bottom position. Use on transport at movement on roads with firm covering;...

  • Page 33: Selector Of Separate Dual-Speed Pto Drive

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Selector of separate dual-speed PTO drive (2) Dog (2) of independent drive of PTO has two positions: • I — rev/min — extreme anticlockwise; • II — 1000 rev/min — extreme clockwise.

  • Page 34: Compressor Control

    Section C. Controls and Instruments Belarus – 90/92 Operating manual Compressor control Handle has two positions: • «Compressor is included» — at turn of handle in such position that hand on handle should be directed back on course of tractor; •...

  • Page 35: Belarus" Seat

    Section C. Controls and Instruments Belarus – 90/92 Operating manual “Belarus” seat Seat of driver is single-seated and cushioning on mechanical bracket with hydraulic shock-absorber, it is fastened by four bolts to floor of cabin. It is adjusted on weight of driver within limited from 60 kg.

  • Page 36: Section D. Operation Instruction

    Section D. Operation Instruction Belarus – 90/92 Operation Manual Section D. Operation Instruction Preparation of Tractor for Operation Running-in Your new tractor will work reliably and Preparing a new tractor to operation for a long time on condition of proper reactivate it, for this: •...

  • Page 37: Engine Starting

    Section D. Operation Instruction Belarus – 90/92 Operation Manual Engine starting Starting standard IMPORTANT! You should do start of the conditions: engine and gauges control operations only seating in the operator seat. Check the level of oil in the sump engine, cooling liquid in the radiator, WARNING: Never work on the tractor in...

  • Page 38: Starting At Low Temperatures (+4°С And Lower)

    Section D. Operation Instruction Belarus – 90/92 Operation Manual Starting at low temperatures Starting procedure (+4°С and lower) temperatures: 1. Shut off pressure oil pump gear of Important! In order to avoid damage hydraulic system order of the power train do not push or pull decrease turning strength of crank the tractor to start the engine from shaft.

  • Page 39: The Beginning Of Tractor Movement

    Section D. Operation Instruction Belarus – 90/92 Operation Manual The beginning of tractor movement ATTENTION! When selecting required movement speed use the gear shifting diagram. To put tractor in motion do the following: • Press clutch pedal to the full; •...

  • Page 40: Tractor Stop

    Section D. Operation Instruction Belarus – 90/92 Operation Manual Tractor stop Steering To stop the tractor: • reduce diesel crankshaft rotation IMPORTANT! tractors speed; equipped with steering booster. If the • press clutch pedal; diesel engine is stopped, the pump doesn’t feed the system and it turns •...

  • Page 41: Section E. Ganging Up

    Section E Ganging up Belarus – 90/92 Operating Manual Section E. GANGING UP Attachments for connection of agricultural machinery to tractor (for tractors with draft control unit) Rear three-point hitch attachment is used for coupling mounted and semi- mounted agricultural machinery, like ploughs, seeders, cultivators, sprayers,...

  • Page 42: Rear Hitch Attachment

    Section E Ganging up Belarus – 90/92 Operating Manual Rear hitch attachment Three-point hitch attachment category provides coupling to tractor mounted and semi-mounted agricultural machinery and implements, having the following coupling elements: • length of suspension axle «L» (distance between joints «А» and «В») equals to 870mm;...
  • Page 43 Section E Ganging up Belarus – 90/92 Operating Manual To increase road clearance when tilling high-stalk plants install front ends of lift links on auxiliary suspension axes, placed 110 mm above the axis of lift links. To follow field profile in lateral direction when operating...

  • Page 44: Mounting Machinery On Tractor

    Section E Ganging up Belarus – 90/92 Operating Manual Mounting machinery on tractor 1. Before mounting machine on the tractor, first make sure there are no people in the machine mounting zone. 2. Using draft control lever (if installed), lower the hitch attachment into down position, pull tractor back and hinge the machine to lift links.
  • Page 45 Section E Ganging up Belarus – 90/92 Operating Manual Machines (implements) can be mounted on the tractor also by means of automatic hitch SA-1, connected to the tractor hitch attachments in three points (two rear joints of lift links and rear joint of top link). To prevent accidental spontaneous de- coupling of the machine from the tractor, secure the automatic hitch latch with...
  • Page 46 Section E Ganging up Belarus – 90/92 Operating Manual Partial interlocking of telescopic ties ATTENTION! Telescopic ties should be installed only in the second lowest hole. To provide necessary lateral movement of a machine, like a plough, in operational position, make the following adjustments of a tie: •...
  • Page 47 Section E Ganging up Belarus – 90/92 Operating Manual Internal ties (2) They are also used for limiting side sway machines both transport operational positions. NOTE: Telescopic ties are mounted only from the outside. Partial interlock (for tillage) Observe the following order of adjustment with a machine in operational position: •...
  • Page 48 Section E Ganging up Belarus – 90/92 Operating Manual Outside chain ties (2) Partial interlocking Provide horizontal machine displacement in operational position by coupling limiting chains to lower holes of brackets (1) and adjusting the length of chains by means of ties (2) to obtain an implement sway to each side at least 125 mm, or in accordance...

  • Page 49: Towing-Hooking Device Tsu-1Zh

    Section E Ganging up Belarus – 90/92 Operating Manual Additional suspension axes of lift links of the hitch attachment When cultivating high-stalk plants install lift links (3) on addition suspension axes. In this case for partial interlocking of an implement in operational position connect limiting chains (2) to the third lowest hole of the bracket (1), and for full interlocking to the fourth hole.

  • Page 50: Front Ballast Weights

    Section E Ganging up Belarus – 90/92 Operating Manual Front ballast weights (1) When operating with heavy mounted machines and implements, to maintain normal tractor controllability under noticeable unloading of the front axle, install additional ballast weights (1) (10 pieces of 20 kg each). Ballast weights (1) are installed on special bracket (2), which is fastened to the front tractor beam and tied up with string (4) and nut (3).

  • Page 51: Control Of Hydraulic System And Hitch Attachment Without Draft Control Unit

    Section E Ganging up Belarus – 90/92 Operating Manual Control of tractor hydraulic system and hitch attachment Hitch attachment on tractors is controlled with extreme right-hand handle distributor. When operating with mounted machines, use only “lift” and “floating” positions of handle.
  • Page 52 Section E Ganging up Belarus – 90/92 Operating Manual To replace PTO drive end, fulfill the following operations: 1. Screw out two bolts and remove a cap (1). 2. Unscrew four nuts (3) and remove guard (2). 3. Screw out six bolts (4), remove plate (6) and dismount the drive end (5).

  • Page 53: Operation With Trailers And Trailed Machines

    Section E Ganging up Belarus – 90/92 Operating Manual Operation with trailers and trailed Tractor movement with engaged machines synchronous PTO drive is permitted at speed not exceeding 8 km/h; f) Disengage PTO when turning an Single-axle machines like semi-trailers aggregate (for trailed machines), as are coupled with tractor by TSU-2 well as when lifting up the machine...

  • Page 54: Application Of Auxiliary Tractor Equipment

    Section E Ganging up Belarus – 90/92 Operating Manual It is strictly prohibited to use rear lift Power pulley is installed on reducer linkage, when towing device cover of rear PTO and is rotated by installed on tractor! splined PTO drive end. To avoid PTO drive end deformation, be sure to provide body installation on four cotter Trailers are operated at speeds, defined...

  • Page 55: Tires

    Section E Ganging up Belarus – 90/92 Operating Manual Tires IMPORTANT! 1. Never exceed air pressure values in tires recommended by the manufacturer. 2. Never perform welding of disk or other kinds of repairs with tire inflated. To dismantle or repair tires address workshop with skilled personnel. Tires used on the tractors 90/92 When mounting FDA 72 When mounting front axle...
  • Page 56 Section E Ganging up Belarus – 90/92 Operating Manual Table of tire loads applied on tractors 90/92 Standard Load Volu Allowable load, kgf (N) at pressure, MPa size of inde 0,08 0,12 0,14 0,16 0,18 0,22 0,24 0,26 0,28 tire filling liqui d, l...
  • Page 57 Section E Ganging up Belarus – 90/92 Operating Manual Allowable change of load on guide and driving wheels' tires depending on speed Table Speed, km/h Change of load, %, on guide wheels’ tires with speed symbol А6 (30 km/h) А8 (40 km/h) 10‫٭‬...
  • Page 58 Section E Ganging up Belarus – 90/92 Operating Manual In the case of standard conditions bring minimum allowable pressure in tires for working with trailed machine. When operating with mounted machine bring higher pressure in tires. When using double wheels the pressure in external tire should be 1,2 – 1,25 times lower than the internal tire.

  • Page 59: Liquid Ballast

    Section E Ganging up Belarus – 90/92 Operating Manual Liquid ballast Tires are filled with liquid ballast only when traction of wheels with soil is not sufficient under unfavorable conditions (over humid soil, etc.). NOTE: It is not recommended to ballast front tires, as this makes tractor steering worse.

  • Page 60: Installation Of Doubled Rear Wheels

    Section E Ganging up Belarus – 90/92 Operating Manual Installation of doubled rear wheels To increase the cross-country ability on tractors, by the use of additional spacers, may be mounted the doubled rear wheels with dimension type 15,5R38. To mount an additional wheel, dismount main wheel, press out short bolts from hub (1) and press in long bolts (2), which are in...

  • Page 61: Section F. Adjustments

    Section F. Adjustments Belarus - 90/92 Operating manual Section F. ADJUSTMENTS Front track adjustment Steering booster without hydraulic cylinder in steering linkage Front track can be changed in the range from 1350 to 1850 mm with intervals 100 mm at symmetric and 50 mm at asymmetric wheel arrangement.

  • Page 62: Fda With Bevel Gear Speed Reducers. Steering Booster Without Cylinder In

    Section F. Adjustments Belarus - 90/92 Operating manual FDA with bevel gear speed reducers. Steering booster without cylinder steering linkage Front track is adjusted by stepless screw mechanism situated at hoses of the front axle at three intervals: 1350-1500 mm, 1500-1600 mm, 1600-1800 mm.

  • Page 63: Adjustment Of Front Wheels Toe-In Of The Tractors With Steering Booster

    Section F. Adjustments Belarus - 90/92 Operating manual Adjustment of front wheels toe- in of the tractors with steering booster Front wheels toe-in is adjusted at the factory in the range of 0-8 mm. Periodically every 250 h of working and also at every change of the front track check toe-in and when is necessary adjust it.

  • Page 64: Rear Track Adjustment

    Section F. Adjustments Belarus - 90/92 Operating manual Rear track adjustment 1. Jack up rear part of the tractor until wheels break off the ground. 2. Unscrew wheels fastening nuts (1) and dismount wheels. 3. Loosen by 3...5 turns four bolts (2) of rear wheels’...

  • Page 65: Adjustment Of Rear Pto Control Linkage

    Section F. Adjustments Belarus - 90/92 Operating manual PTO adjustment Adjustment of rear PTO control linkage 5. Fix lever 11 in neutral position by introducing bolt 10 (М10X60) in diameter inside lever opening, and opening in the During assembly at the manufacturer, or rear axle body, corresponding to it;...
  • Page 66 Section F. Adjustments Belarus - 90/92 Operating manual Figure 2. Rear PTO planetary reduction gear: 1 - drive switching coupling; 2 - crown pinion shaft; 3 - nut; 4 - carrier; 5 - sun pinion; 6 - satellite; 7 - crown pinion;...
  • Page 67 Section F. Adjustments Belarus - 90/92 Operating manual IMPORTANT! If the brake band has gross wear, turn the eccentric axle on º , choosing the excessive gaps between the brake band and the drum (flat on the left). Then fix the shaft by stop plate (17) and bolt (16).

  • Page 68: Adjustment Of Release Levers Position

    Section F. Adjustments Belarus - 90/92 Operating manual Adjustment release levers position After mounting the clutch on flywheel and taking off the bolts, adjust positions of squeeze levers 3 by special mandrel 4, which is based on inner diameter of splines of hub of the backing plate 5 with the stop to the end of hub.

  • Page 69: Adjustment Of Rear Axle Differential Lock Control (Tractors With Steering Booster)

    Section F. Adjustments Belarus - 90/92 Operating manual Adjustment rear axle FDA cardan drive adjustment differential lock control Adjust in the cardan drive the safety clutch in the intermediate bearing and check the side acceptable operation play in the bearings of cardan. differential lock control adjust correctly Adjust the safety clutch to the torque transfer relative position of the hand lever 4 and...

  • Page 70: Adjustment Of Tapered Roller Bearings Of Directive Wheels Of Belarus-90 Tractors

    Section F. Adjustments Belarus - 90/92 Operating manual Adjustment tapered roller bearings of directive wheels of Belarus-90 tractors During the adjustment of bearings of guide wheels, mount axial clearance in the range 0,08-0,20 mm. Control it every 1000 h operating. For this, lift the wheel and, rocking direction,...

  • Page 71: Section G. Scheduled Maintenance

    Section G. Maintenance Belarus – 90/92 Operating manual Section G. MAINTENANCE Categories of tractor maintenance Categories of maintenance Interval and time to maintenance in hours of tractor operation Maintenance when preparing the tractor for operation: M when preparing the tractor for running-in Before preparation for running-in M during running-in M in the process of running-in...

  • Page 72: Maintenance During Running-In

    Section G. Maintenance Belarus – 90/92 Operating manual Maintenance during running-in: • Clean centrifugal oil filter; • Change filter element of hydraulic • Control level and if necessary fill oil in system; diesel casing and cooling fluid in • Rinse course diesel oil purification radiator;...

  • Page 73: Maintenance Table

    Section G. Maintenance Belarus – 90/92 Operating manual TABLE OF SCHEDULED MAINTENANCE Cleanin Lubricati Adjustm Washin Object of service Check Change Drain Notes Daily maintenance (DM) after each 10 hours of operation Oil in engine Cooling fluid Oil in hydraulic system tank Steering а...
  • Page 74 Section G. Maintenance Belarus – 90/92 Operating manual End of the table Adjustm Cleanin Lubricat Washin Object of service Check Change Drain Notes Front wheels (toe-in) Air purifier of diesel engine Hydraulic system filter* Generator Sediment from fine fuel filter Oil in transmission Oil in FDA casings Maintenance of steering gear...
  • Page 75 Section G. Maintenance Belarus – 90/92 Operating manual End of the table Adjustm Cleanin Lubricat Washin Object of service Check Change Drain Notes Maintenance after 2000 hours of operation Engine nozzles Fuel pump. Advance angle of fuel injection. Fuel pump. Adjusting on stand Cooling system of engine General maintenance...

  • Page 76: Every 10 Working Hours Or Daily

    Section G. Maintenance Belarus – 90/92 Operating manual Daily maintenance (DM) after every 10 hours of operation or daily Operation 1. Oil level in engine casing Shut down the engine, wait for 15 minutes and check oil level. Oil level should be between lower and upper probe (3) marks.
  • Page 77 Section G. Maintenance Belarus – 90/92 Operating manual Operation 3. Oil level in hydraulic system tank NOTE: Before checking oil level, put tractor on level horizontal terrain. Shut down diesel and break the tractor with parking brake. Check oil level on oil-metering glass (1) on the left-hand side of hydraulic assemblies’...

  • Page 78: Fulfill Foregoing Maintenance Operations Plus Following Operations Every

    Section G. Maintenance Belarus – 90/92 Operating manual Maintenance-1 (M-1) after every 125 hours of operation Perform operations of the previous maintenance and those given below: Operation 4. Level and state of oil in air purifier sump of engine Loosen two nuts (1) and take off sump (2) of air purifier(3).
  • Page 79 Section G. Maintenance Belarus – 90/92 Operating manual Operation 6. Draining sediment from fuel tanks and course fuel filter. Open drain plugs (1) of fuel tanks (2) and drain plug (3) of filter. Drain sediment until pure fuel comes out. Drain sediment in special container and dispose it correctly.
  • Page 80 Section G. Maintenance Belarus – 90/92 Operating manual Operation 9. Air pressure in tires Check the state of tread and air pressure in tires. If necessary, adjust pressure in accordance with recommendations set forth in the present “Manual”. Operation 10. Lubricating bearing of clutch release yoke Take off plug (1) on the left side of clutch casing.
  • Page 81 Section G. Maintenance Belarus – 90/92 Operating manual 12…15 mm higher of protective mesh (or storage batteries. between level marks on transparent Check terminals (2) under sheathes battery housing). necessary, (A) and plugs (1) for cleanness. If distilled water. necessary, grease terminals (2) with Before adding distilled water check technical cup grease.
  • Page 82 Section G. Maintenance Belarus – 90/92 Operating manual Operation 13. Checking plays of steering joints After each 250 hours of operation check steering joints by hand force shaking or wheel turning. To regulate steering joints, please do the following: а) Take off locking wire (2) from the lug 3. b) Screw up threaded plug (1) in a way eliminate clearance...
  • Page 83 Section G. Maintenance Belarus – 90/92 Operating manual Operation 14. Adjusting free travel of clutch pedal IMPORTANT! Too great free pedal travel does not allow to fully disengage the clutch and makes gears shifting more difficult. No free travel of the pedal causes wear of friction facings and overheat of clutch components.

  • Page 84: Fulfill Foregoing Maintenance Operations Plus Following Operations Every

    Section G. Maintenance Belarus – 90/92 Operating manual Maintenance No.2 (M-2) after every 500 hours of operation Perform operations of the previous maintenance following operations: Operation 15. Centrifugal oil filter of engine • Take off nut (1) and cap (2). •...
  • Page 85 Section G. Maintenance Belarus – 90/92 Operating manual Operation 16. Changing oil in engine • Warm engine normal operation temperature (at least 70°С). • Put tractor on even terrain, shut down engine and engage tractor parking brake. • Remove cover (2) of oil filling neck and unscrew drain plug (4).
  • Page 86 1, 2, 3 and 5, as shown above. table: • After adjusting clearances, tighten check nuts (1) and put removed parts in place. Belarus 90/92 Inlet valves Outlet valves 0,20.. .0,35 0,20.. .0,35 https://tractormanualz.com/...
  • Page 87 Section G. Maintenance Belarus – 90/92 Operating manual Operation 18. Play of the steering wheel With engine in operation the steering wheel play should not exceed 25°. Otherwise, check and eliminate plays joints hydraulic cylinders, steering tie-rod. Operation 19. Adjustment of wheel and parking brakes.
  • Page 88 Section G. Maintenance Belarus – 90/92 Operating manual To adjust parking brake: Put the tractor on the even surface, shut down the diesel and lock rear wheels from front and back sides and do the following: a) Shift lever (1) to extreme front (disengaged) position.
  • Page 89 Section G. Maintenance Belarus – 90/92 Operating manual Operation 21. Checking air tightness purifier inlet duct connections • Remove mono cyclone (1) and clean its inside surface. • Loosen clamps (2), take off bolt (4), release clamp (3) and remove air purifier (5).
  • Page 90 Section G. Maintenance Belarus – 90/92 Operating manual Operation 22. Wash of oil filter of hydraulic system NOTE: Rinse the oil filter of hydraulic system in the future after every 1000 hours of operation. • Unscrew bolts (1) and remove cover (2), take out filter casing (3) in assembly.
  • Page 91 Section G. Maintenance Belarus – 90/92 Operating manual Operation 24. Draining sediment from Fuel input fine fuel filter. Fuel output Drain sediment after every 250 operating hours. Turn off drain plug (1) at the bottom of the fine fuel filter by 2…3 turns according to the figure and drain sediment until pure fuel appears.
  • Page 92 Section G. Maintenance Belarus – 90/92 Operating manual Operation 26. Oil level in FDA casing. FDA with bevel gear speed reducers Check oil level in: 1. casings of wheel reduction gears (1) (of lower coned pairs); casing main gear front differential);...
  • Page 93 1 and screw down adjusting bolt 2 up to the stop into the shaft end, then unscrew by 1/8-1/10 turns and locknut with safety nut 1. Operation 29. Lubricating of front axle stubs (Belarus 90) Using grease make 10…12...

  • Page 94: Fulfill Foregoing Maintenance Operations Plus Following Operations Every

    Section G. Maintenance Belarus – 90/92 Operating manual Maintenance No.3 (M-3) after every 1000 hours of operation Perform operations of the previous maintenance plus following operations: Operation 30. Tightening torque of cylinder head bolts NOTE! Perform this operation only on heated engine.
  • Page 95 Section G. Maintenance Belarus – 90/92 Operating manual 1 – filter FТ020-1117010; 2 – casing; 3 – Operation Changing filtering arm; 4 - plug (for drain of sediment); 5- element of fine fuel filter outlet union; 6 –plug (for air input); 7 – •...
  • Page 96 Section G. Maintenance Belarus – 90/92 Operating manual Operation 33. Generator Take drive belt (1) off generator pulley (2). Check rotation of generator rotor and plays in bearings. If there are any plays or rotor stickings, remove generator and send to workshop for repairs.
  • Page 97 Section G. Maintenance Belarus – 90/92 Operating manual Operation 34. Steering joints Gear box casing – rear axle housing; With engine running, rotate steering wheel to both sides to check free travel and plays of joints (1) of steering tie-rod (4).
  • Page 98 Section G. Maintenance Belarus – 90/92 Operating manual Nuts of cardan shaft flanges; nuts of FDA body wedges; intermediate bearings casing of cardan drive – clutch casing; bracket fittings of lifting TSU and hydraulic hoist. Operation 38. Changing oil in hydraulic system •...
  • Page 99 Section G. Maintenance Belarus – 90/92 Operating manual Operation 40. Changing oil in liquid lubrication fill the capacities of upper FDA and intermediate bearing bevel gears and pinions with oil up to lower casings. edge of opening (4); - Put in place and tighten level check/fill plugs. FDA with bevel gear speed reducers •...
  • Page 100 Section G. Maintenance Belarus – 90/92 Operating manual Operating 41. Engine oil pre-filter  Loosen four clamps of connecting sleeves and remove filter from oil conduit, under engine oil radiator. IMPOTANT! Make notice of how filter was placed in oil conduit. Random filter installation is not allowed.
  • Page 101 Section G. Maintenance Belarus – 90/92 Operating manual adjustment engagement 1/10 turns until the hole in the worm “worm – sector” loosen bolt 5, and input key matches locknut pin hole and then fasten in hub flange recess, turn hub 6 clockwise nut by cotter.

  • Page 102: Fulfill Foregoing Maintenance Operations Plus Following Operations Every

    Section G. Maintenance Belarus – 90/92 Operating manual Special maintenance After every 2000 hours operation Operation Checking engine nozzles IMPOTANT! Nozzles should be cleaned and adjusted in specialized workshop of the dealer. WARNING: Diesel fuel is sprayed under high pressure and can cause serious trauma if nozzle spraying is checked by hand.
  • Page 103 Section G. Maintenance Belarus – 90/92 Operating manual Operation 45. Advance angle of • Check if radiator core is clean. If fuel injection necessary, wash the radiator and blow Adjusting advance angle of fuel off the core with compressed air pump injection should be within 19°...

  • Page 104: General Maintenance

    Section G. Maintenance Belarus – 90/92 Operating manual General maintenance Operation 48. Adjusting drain valve of engine centrifugal oil filter If during engine operation in nominal conditions and at normal temperature (80...100°С) oil pressure drops below 0.1 MPa, shut down the engine and correct the defect.

  • Page 105: Tractor Maintenance In Special Operating Conditions

    Section G. Maintenance Belarus – 90/92 Operating manual Tractor maintenance in special shift fill tanks with fuel operating conditions temperature below 30°С use arctic fuel). Fill the cooling system with antifreeze fuel. When operating the tractor under special conditions (at lower temperatures, in the When running the tractor on rocky desert, on sand and boggy soils, rocky soils and in highlands.

  • Page 106: Lubrication Table

    Section G. Maintenance Belarus – 90/92 Operating manual LUBRICATION TABLE Description, brand and standard designation to greases and lubricating Description of the fluids Number of assembly units and Lubricant during the operation at lubrication points lubrication points temperature Filling when Lubrication from -40ºC to from +5ºC to +50ºC...

  • Page 107: Refill Capacities

    Section G. Maintenance Belarus – 90/92 Operating manual Description, brand and standard designation to greases and lubricating fluids Description of the Number of Lubrication assembly units Filling when lubrication Lubricant when storing and lubrication operating, l points (to 6 months) points Hydraulic oil BECHEM Staroil HLP TU RB 903.201.042 –...

  • Page 108: Adjusting Parameters Of Fuel Pumps On Stand

    105-115 Section G. Maintenance Belarus – 90/92 Operating manual Adjusting characteristics of fuel pumps 4UTNI and 4UTNI-Т on stand Table 1 Description of characteristic Unit 4UTNI measure D-243.1 Angle of commencement of fuel delivery by section on the meniscus degree 57±1 to upper dead point of tappet (on cam profile) Rated speed of the pump camshaft...

  • Page 109: Section H. Possible Malfunctions And Remedies

    Section H. Possible malfunctions and remedies Belarus – 90/92 Operating manual Section H. POSSIBLE MALFUNCTIONS AND REMEDIES MALFUNCTION, SYMPTOM REMEDY ENGINE Engine doesn’t start Bleed the system using manual fuel priming Air in the fuel system pump. If necessary, remove air inflow. Take off fuel pump from diesel and send it to repairs.

  • Page 110: Clutch

    Section H. Possible malfunctions and remedies Belarus – 90/92 Operating manual Continuation of table H-1 MALFUNCTION, SYMPTOM REMEDY C. Exhaust tube exudes blue smoke Oil in the combustion chamber due to wear of Replace worn out parts of sleeve-piston group. sleeve-piston group parts.

  • Page 111: Brakes

    Section H. Possible malfunctions and remedies Belarus – 90/92 Operating manual Continuation of table H-1 MALFUNCTION, SYMPTOM REMEDY BRAKES Poor brakes operation (brakes do not hold) Disturbed adjustment of brakes control. Adjust brakes control. Oiling or wear of brake disks’ lining. Eliminate oil leaking.
  • Page 112 Section H. Possible malfunctions and remedies Belarus – 90/92 Operating manual Continuation of table H-1 MALFUNCTION, SYMPTOM REMEDY STEERING «Difficult» steering Oil foaming in amplifier system: a) insufficient quantity of oil in amplifier body; Check oil level, if is necessary, add to required level b) ingress of air to system Check suction line and eliminate leakage...
  • Page 113 Section H. Possible malfunctions and remedies Belarus – 90/92 Operating manual Continuation of table H-1 MALFUNCTION, SYMPTOM REMEDY HYDRAULIC LIFT LINKAGE No lift of mounting or load-carrying capacity 1. Low oil level in the tank – add oil to level. 2.
  • Page 114 Section H. Possible malfunctions and remedies Belarus – 90/92 Operating manual Continuation of table H-1 MALFUNCTION, SYMPTOM REMEDY ELECTRICAL EQUIPMENT Storage battery has low charge degree Replace generator voltage regulator. Low level of voltage being regulated. Adjust tension of drive belt. Slippage of drive belt of generator.
  • Page 115 Section I. Tractor transportation Belarus 90/92 Operating manual Section I. TRACTOR TRANSPORTATION AND TOWING Tractors are transported by railroad, motor Tie steel ropes down to front axle beam or vehicles, on trailers, as well as by towing eye-bolt (1) and rear axle eye-bolt (1), as or under its own power.
  • Page 116 Section J. Tractor storage Belarus 90/92 Operating manual Section J. TRACTOR STORAGE house. Fastening parts of dismounted It is necessary to store tractors in tractor components reinstalled. enclosed areas or under coping according Electrical equipment (headlights, generator, to the recommendations of GOST 7751-...
  • Page 117 Section J. Tractor storage Belarus 90/92 Operating manual axle, front axis or arms of final drive of transmission, reduction gears, openings of FDA (see figure, positions are shown by hydraulic systems’ breathers, engine arrows). exhaust pipe and others), through which...
  • Page 118 Section J. Tractor storage Belarus 90/92 Operating manual Requirements for outdoors long-term BAN 397, SUMIDERA 397 on inside storage panel surfaces. PTO drive ends are Engine preparation for putting in long- preserved by greasing with corrosion- term storage includes preservation of protective oil RUST BAN 335, ML -5888.
  • Page 119 Section J. Tractor storage Belarus 90/92 Operating manual preservation grease KS-U according to description. Perform preservation Specifications TU RB 600125053.019- operations special clothes 2004. During outdoor storage specific footwear and use individual protection surfaces are preserved with grease means. When performing preservation «BELA-KOR»...
  • Page 120 Section K. Tractor disposal Belarus-90/92 Operating manual Section K. TRACTOR DISPOSAL  Dismounting of parts and assem- When disposing tractor upon expira- tion of service (operation) life, it is neces- bly units, maintenance of air condition- sary to: ing system should be carried out by ...
  • Page 121 Annex L Belarus 90/92 Operating manual Annex L. Wiring diagram List of wiring diagram elements Page 1 Symbol Description Quantity Notes Sensor of coolant temperature indicator Sensor of engine oil pressure indicator Sensor of fuel level indicator E1, E2 Road headlight...
  • Page 122 Annex L. Belarus 90/92 Operating manual Page 2 Indicator of engine coolant temperature Battery disconnect switch Multifunction switch under steering Switch of starter and instruments Main light switch Start interlock switch Alarm signaling switch Stop-light switch Sensor of clogging of air purifier filter Sensor of engine emergency oil pressure XA9.1...
  • Page 123 Annex L Belarus 90/92 Operating manual https://tractormanualz.com/...

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