STV32 · STV36 · STV40, WSM HYDRAULIC SYSTEM
8-S16
Removing Hydraulic Pump Assembly
1) Regulator Valve
1. Open the food and remove the side cover (RH).
2. Disconnect the accelerator wire (4) from the engine.
3. Remove the joint screw (2) and disconnect the power steering
delivery hose (7).
4. Remove the joint screw (5) and disconnect the bi-speed
delivery pipe.
5. Remove the joint screw (6) and mounting screws (1), and
separate the regulating valve (3) from the hydraulic pump.
(When reassembling)
A Apply grease to the O-ring (10) on the regulator valve (3) and
take care not to damage it.
A Be sure to install the poppet (13), spring (12) and copper
gasket (8) (9) (11).
2) Removing Hydraulic Pump
1. Loosen the clump (2) and separate the suction hose (1) from
the hydraulic pump (3).
2. Disconnect the 3P delivery pipe (5) from the hydraulic pump
(3).
3. Remove the mounting screws (4) and remove the hydraulic
pump (3).
Tightening torque
Joint screw (2)
(Power steering delivery
hose)
49 to 58.8
5.0 to 6.0
36.2 to 43.4 ft-lbs
Joint screw (5)
(Bi-speed delivery pipe)
34.3 to 39.2
3.5 to 4.0
25.3 to 28.9 ft-lbs
Joint screw (6)
(Regulator delivery
pipe)
39.2 to 49.0
4.0 to 5.0
28.9 to 36.2 ft-lbs
Regulator valve
mounting screw
17.7 to 20.6
1.8 to 2.1
13.0 to 15.2 ft-lbs
Delivery hose (7)
installation angle (A)
Factory spec.
0.52 rad
30
(1) Mounting Screw (9) Copper Gasket
(2) Joint Screw (Power Steering (10) O-ring
Delivery Hose) (11) Copper Gasket
(3) Regulator Valve (12) Spring
(4) Accelerator Wire (13) Poppet
(5) Joint Screw (Bi-speed Delivery
Pipe) A : Installation Angle of Power
(6) Joint Screw (Regulator Delivery Steering Delivery Hose
Pipe)
(7) Power Steering Delivery Hose
(8) Copper Gasket
0000007854E
(1) Suction Hose (3) Hydraulic Pump
(2) Clump (4) Mounting Screw
0000007855E
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