HYDRAULIC SYSTEM
M6040, M7040, WSM
8-S18
5. DISASSEMBLING AND ASSEMBLING
[1] HYDRAULIC PUMP
Removing Hydraulic Pump Assembly
1. Place the disassembling stand under the transmission case and
right rear axle.
2. Remove the right rear wheel.
3. Remove the differential lock rod (7).
4. Remove the 3-point hitch delivery pipe 1 (2) and delivery pipe 2
(6) with outlet block (3).
5. Disconnect the power steering delivery pipe (1).
6. Remove the suction pipe (4).
7. Remove the hydraulic pump (5).
(When reassembling)
• Be sure to fix to O-ring with transmission fluid.
9Y1210143HYS0018US0
Hydraulic Pump
1. Put the parting marks (1), (3), (5), (7) on the flange (6), housing
(4), (8) and housing cover (2).
2. Unscrew the housing cover mounting screw and separate the
flange (6) and housing cover (2) from the housing (4).
3. Remove the backup plate (8).
4. Take out the gears (9), (10).
(When reassembling)
• When installing the backup plate (8) with seal element (11), be
sure to reassemble them to the each original position. Seal
element on the backup plate (8) does not face to the gear side.
• Take care not to damage the seal elements and O-rings.
• After reassembly, check the smooth rotation of the hydraulic
pump (for example, mount arm an approx. 100 mm (3.94 in.)
long to the drive gear and rotate its arm slowly for smooth
rotation).
9Y1210143HYS0019US0
Tightening torque
Rear wheel mounting nut
260 to 304 N·m
26.5 to 31.0 kgf·m
191.8 to 224.2 lbf·ft
3-point hitch delivery pipe
retaining nut
107.9 to 117.7 N·m
11.0 to 12.0 kgf·m
79.0 to 86.8 lbf·ft
(1) Delivery Pipe (for Power Steering)
(2) 3-point Hitch Delivery Pipe 1
(3) Outlet Block
(4) Suction Pipe
(5) Hydraulic Pump
(6) 3-point Hitch Delivery Pipe 2
(7) Differential Lock Rod
Tightening torque
Housing cover mounting
screw
39.2 to 44.1 N·m
4.0 to 4.5 kgf·m
28.9 to 32.5 lbf·ft
(1) Parting Mark
(2) Housing Cover
(3) Parting Mark
(4) Housing
(5) Parting Mark
(6) Flange
(7) Parting Mark
(8) Backup Plate
(9) Gear (Three Point System)
(10) Gear (Power Steering)
(11) Seal Element
a: Inlet
b: Outlet
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