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Summary of Contents for Kubota B2410

  • Page 378 1. Please keep this information with your Workshop Manual. 2. Revised Workshop Manual (97897-12272) will be available at the beginning of November. * This bulletin is to be sent to the distributors directly from KUBOTA Corporation due t o urgency of notification.
  • Page 379 (2/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 380 (3/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 381 (4/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 382 (5/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 383 (6/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 384 (7/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 385 (8/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 386 (9/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 387 (10/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 388 (11/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 389 (12/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 390 (13/13) Bulletin No : SFI-A-04-015 KUBOTA Corporation, OSAKA, JAPAN...
  • Page 392 WORKSHOP MANUAL TRACTOR B7800 HSD ( SUPPLEMENT ) KiSC issued 09, 2007 A...
  • Page 393 In this section, the main additional functions and altered points of B7800HSD tractor from B2910 tractor are explained separately in two items, “Mechanism” and “Servicing” for each section. As for the items which are not explained in this section, refer to B2410, B2710, B2910 Workshop Manual. Mechanism Information on the construction and function are included for B7800HSD tractor.
  • Page 394: Specifications

    B7800HSD (SUPPLEMENT), WSM SPECIFICATIONS SPECIFICATIONS Model B7800HSD PTO power 16.4 kW (22.0 HP) Maker KUBOTA Model V1505-E-D16 Type Indirect Injection. Vertical, water-cooled, 4-cycle diesel Number of cylinders 78 × 78.4 mm (3.07 × 3.09 in.) Bore and stroke Total displacement 1498 cm (91.5 cu.in.)
  • Page 395 –1 –1 Revolution 1 speed (540 min (rpm) at 2584 engine min (rpm)) PTO system PTO shaft USA No. 5 (KUBOTA 10-tooth) involute spline Mid. –1 –1 Revolution 1 speed (2537 min (rpm) at 2600 engine min (rpm)) NOTE: * Manufacture’s estimate the company reserves the right to change the specifications without notice.
  • Page 396 GENERAL KiSC issued 09, 2007 A...
  • Page 397 GENERAL CONTENTS 1. FEATURES ...................... G-1 2. TIRES....................... G-2 [1] TIRE PRESSURE ..................G-2 [2] FRONT TREAD..................G-2 KiSC issued 09, 2007 A...
  • Page 398 B7800HSD (SUPPLEMENT), WSM G GENERAL 1. FEATURES 1. Quarter Inching Valve 2. E-TVCS (Three Vortex Combustion System) Diesel Engine 3. Hydrostatic Transmission (HST) 4. 3 Speed Ranges 5. Powerful Category Ι, 3-Point Hitch 6. Exceptional Hydraulics 7. Full Flat Deck 8.
  • Page 399 B7800HSD (SUPPLEMENT), WSM G GENERAL 2. TIRES [1] TIRE PRESSURE Type Tire sizes Inflation pressure 170 kPa Front 7 – 12 4PR 1.7 kgf/cm 24 psi Farm 110 kPa Rear 12.4 – 16 4PR 1.1 kgf/cm 16 psi 150 kPa 23 ×...
  • Page 400: Hydraulic System

    HYDRAULIC SYSTEM KiSC issued 09, 2007 A...
  • Page 401 MECHANISM CONTENTS 1. CONTROL VALVE (QUARTER INCHING VALVE) ........1-M1 2. RELIEF VALVE ..................... 1-M3 3. FEEDBACK LINKAGE .................. 1-M4 4. HYDRAULIC CYLINDER ................1-M5 KiSC issued 09, 2007 A...
  • Page 402 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 1. CONTROL VALVE (QUARTER INCHING VALVE) This implement control valve (quarter inching valve) is located under the hydraulic cylinder block. Neutral Oil forced into the control valve (1) through P port and returns to the transmission case through T1 port. Also, C port is closed by spool (2), oil in the hydraulic cylinder does not flow to the transmission case.
  • Page 403 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM Down When the control lever is moved to “DOWN” position, the spool (2) is moved to the right. Oil in the hydraulic cylinder is forced out to the transmission case through the T2 port by the weight of the implement, causing the implement to lower.
  • Page 404: Relief Valve

    B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 2. RELIEF VALVE The implement control system circuit has a relief valve to restrict the maximum pressure in the circuit. The relief valve is located in the control valve body. The relief valve is of the guide piston type with damping effect.
  • Page 405 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 3. FEEDBACK LINKAGE (1) Lift Arm RH (4) Hydraulic Control Lever (6) Control Lever Shaft (8) Feedback Pin (2) Feedback Rod (5) Feedback Arm (7) Control Lever Arm (9) Lock Nut (3) Interlocker When the hydraulic control lever (4) moved to rearward to lift the implement, the spool of the control valve is pulled out to form a raising circuit by the motions of feedback arm (5), control lever shaft (6) and control lever arm (7).
  • Page 406: Hydraulic Cylinder

    B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 4. HYDRAULIC CYLINDER (1) Lowering Speed Adjusting Shaft (2) Lowering Speed Adjusting Valve (3) Hydraulic Cylinder (4) Hydraulic Arm (5) Lift Arm (6) Hydraulic Control Valve (7) Hydraulic Rod (8) Back-up Ring (9) O-ring (10) Piston W1014117 The main components of the hydraulic cylinder are shown in the figure above.
  • Page 407 SERVICING CONTENTS 1. SERVICING SPECIFICATIONS ..............1-S1 2. TIGHTENING TORQUES ................1-S2 3. HYDRAULIC CYLINDER ASSEMBLY AND HYDRAULIC BLOCK ...1-S3 [1] CHECKING AND ADJUSTING ...............1-S3 [2] DISASSEMBLING AND ASSEMBLING..........1-S5 (1) Separating Hydraulic Cylinder Assembly ..........1-S5 (2) Disassembling Hydraulic Cylinder Assembly ........1-S5 [3] SERVICING ....................1-S7 KiSC issued 09, 2007 A...
  • Page 408 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 1. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit [Hydraulic Pump] Pump Delivery at Engine 2600 rpm, at no pressure 24.4 L/min – Oil Temperature 50 °C, 122 °F 6.4 U.S.gal/min 5.4 Imp.gal/min at 13.7 MPa 23.0 L/min –...
  • Page 409: Tightening Torques

    B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 2. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page G-9.) Item N·m kgf·m ft-lbs Delivery pipe nut for power steering 65 to 75 6.6 to 7.7 47.9 to 55.3...
  • Page 410 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM 3. HYDRAULIC CYLINDER ASSEMBLY AND HYDRAULIC BLOCK [1] CHECKING AND ADJUSTING Relief Valve Setting Pressure 1. Remove the seat under cover. 2. Remove the plug (1) from front of hydraulic cylinder body. 3. Install the adaptor 58. Then connect the cable and pressure gauge to adaptor 58.
  • Page 411 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM Lift Arm Free Play 1. Set the hydraulic control lever to the lowest position. 2. Start the engine, and set at the idling speed. 3. Move the hydraulic control lever to lift position until the lift arm moves to the uppermost position.
  • Page 412 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM [2] DISASSEMBLING AND ASSEMBLING (1) Separating Hydraulic Cylinder Assembly Seat and Seat Stay 1. Remove the seat. 2. Remove the lowering speed adjusting knob and dipstick, then remove the seat under cover. 3. Remove the tool box (3) and the seat stay assembly (2). 4.
  • Page 413 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM Lift Arm, Hydraulic Arm Shaft and Hydraulic Arm 1. Remove the feedback rod lock nuts (5) and spring (6). 2. Remove the lift arm LH (1). 3. Remove the hydraulic arm shaft (3) and lift arm RH (2) as a unit. (When reassembling) •...
  • Page 414 B7800HSD (SUPPLEMENT), WSM HYDRAULIC SYSTEM Disassembling Control Valve 1. Remove the spool (1). 2. Remove the plug (2) and draw out the washer (3), shims (4), spring (5), poppet (6) and valve seat (7). (When reassembling) 49.0 to 68.6 N·m Tightening torque Relief valve plug 5.0 to 7.0 kgf·m...
  • Page 415: Electrical System

    ELECTRICAL SYSTEM KiSC issued 09, 2007 A...
  • Page 416 MECHANISM CONTENTS 1. WIRING DIAGRAM ..................2-M1 2. OPERATORS PRESENCE CONTROL (OPC) ........... 2-M3 [1] ENGINE STARTING ................2-M5 [2] ENGINE AUTOMATICALLY STOPPING: AUTOMATIC ENGINE STOP ....................... 2-M5 KiSC issued 09, 2007 A...
  • Page 417: Wiring Diagram

    B7800HSD (SUPPLEMENT), WSM ELECTRICAL SYSTEM 1. WIRING DIAGRAM 2-M1 KiSC issued 09, 2007 A...
  • Page 418 B7800HSD (SUPPLEMENT), WSM ELECTRICAL SYSTEM 2-M2 KiSC issued 09, 2007 A...
  • Page 419 B7800HSD (SUPPLEMENT), WSM ELECTRICAL SYSTEM 2. OPERATORS PRESENCE CONTROL (OPC) (1) Battery (2) Key Stop Solenoid Relay (3) Engine Stop Solenoid (4) Starter (5) Main Switch (6) Clutch Pedal Switch (7) Controller (8) Seat Switch (9) Mid-PTO Shift Lever Switch (Mid-PTO Model) (10) PTO Shift Lever Switch (11) Speed Control Pedal Switch...
  • Page 420 B7800HSD (SUPPLEMENT), WSM ELECTRICAL SYSTEM 4. PTO shift lever switch - This PTO shift lever switch detects both the rear- PTO shift lever and mid-PTO shift lever engaging or disengaging positions. When shifting both the rear- PTO shift lever and mid-PTO shift lever to “NEUTRAL”, the PTO shift lever switch is pushed in and electrical circuit is closed (“ON”).
  • Page 421 B7800HSD (SUPPLEMENT), WSM ELECTRICAL SYSTEM [1] ENGINE STARTING The engine mounted on B7800 can be started when OPC switches such as clutch pedal switch, speed control pedal switch, mid-PTO shift lever switch, PTO shift lever switch are “ON” at any operator’s seat positions as shown on the table below.
  • Page 422 SERVICING CONTENTS 1. SERVICING SPECIFICATIONS ..............2-S1 2. CHECKING AND SERVICING ..............2-S2 [1] STARTING SYSTEM ................2-S2 (1) Checking and Servicing ..............2-S2 KiSC issued 09, 2007 A...
  • Page 423 B7800HSD (SUPPLEMENT), WSM ELECTRICAL SYSTEM 1. SERVICING SPECIFICATIONS SAFETY SWITCH Item Factory Specifications Allowable Limit 0 Ω when depressing the • Clutch pedal switch Resistance – clutch pedal. 0 Ω when placing the pedal • Speed control pedal Resistance – switch to “NEUTRAL”.
  • Page 424 Clutch Pedal Switch, Speed Control Pedal Switch, Mid-PTO Shift Lever Switch and PTO Shift Lever Switch Continuity 1. Refer to former B2410-B2910 WSM (97897-12271) page 9-S10. 2. If the safety switch is defective, replace it. Safety switch (clutch pedal switch, When switch is 0 Ω...
  • Page 425 (B) Controller Replacing Controller 1. If engine is not started, check all part regarding the starting system referring to “TROUBLESHOOTING” shown on B2410- B2910 WSM (97897-12271) page 9-S1. 2. If all part except the controller is not defective, replace the controller.
  • Page 426 EDITOR : KUBOTA FARM & INDUSTRIAL MACHINERY SERVICE, LTD. 64, ISHIZU-KITAMACHI, SAKAI-KU, SAKAI-CITY, OSAKA, 590-0823, JAPAN PHONE : ( 81 ) 72-241-1129 : ( 81 ) 72-245-2484 E-mail : ksos-pub@kubota.co.jp Printed in Japan 2007. 09, S, E I , E I , e Code No.9Y011-13031...

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B2710B2910

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