HYDRAULIC SYSTEM
B2650HSDC, B3350HSDC, WSM
7-S6
[2] PREPARATION
(1) Hydraulic Pump
• The hydraulic pump is precision machined and assembled : If disassemble once, it may be unable to keep
its original performance. Therefore, when the hydraulic pump fails, replacement should be done with the
hydraulic pump assembled except when emergency repair is unavoidable.
• When repair is required, follow the disassembly and servicing procedures shown below with utmost care.
• Be sure to test the hydraulic pump with a flowmeter before disassembling.
• After reassembly, be sure to perform break-in operation and ensure that there is nothing abnormal with
the hydraulic pump.
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Battery Cable
1. Open the bonnet and remove the side cover.
2. Disconnect the battery negative cable (1).
• When disconnecting the battery cables, disconnect the
grounding cable first. When connecting, the positive cable
first.
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Hydraulic Pump
1. Remove the plate (1) and pillar (2). (B3350)
2. Disconnect the accelerator wire (4) and remove the bracket (3)
with accelerator. (B2650)
3. Disconnect the power steering delivery hose (5) and 3-point
hitch delivery pipe (6).
4. Disconnect the suction hose (7) and remove the hydraulic pump
(8).
(When reassembling)
• Apply liquid gasket (Three Bond 1206D or equivalent) to engine
stop solenoid.
• For fastening hydraulic pipe nut, use two wrenches. Hold
the fitting with a wrench, turn the pipe nut another wrench
to avoid damage at fitting installed part.
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(1) Battery Negative Cable
Tightening torque
Power steering delivery
hose nut
24 to 28 N·m
2.5 to 2.8 kgf·m
18 to 20 lbf·ft
(1) Plate
(2) Pillar
(3) Bracket
(4) Accelerator Wire
(5) Power Steering Delivery Hose
(6) 3-Point Hitch Delivery Pipe
(7) Suction Hose
(8) Hydraulic Pump
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