SR060-05
R11987
R11986
SST
-
STEERING
POWER STEERING VANE PUMP
SR-25
1421
Author:
Date:
2001 SIENNA (RM787U)
DISASSEMBLY
NOTICE:
When using a vise, do not overtighten it.
1.
MEASURE PS VANE PUMP ROTATING TORQUE
(a)
Check that the pump rotates smoothly without abnormal
noise.
(b)
Using a torque wrench, check the pump rotating torque.
Rotating torque:
0.3 N·m (2.8 kgf·cm, 2.4 in.·lbf) or less
2.
REMOVE VANE PUMP PULLEY
Using SST to stop the pulley rotating, remove the nut.
SST
09960-10010 (09962-01000, 09963-01000)
3.
REMOVE FRONT AND REAR BRACKETS
Remove the 3 bolts, 2 nuts, front and rear brackets.
4.
REMOVE SUCTION PORT UNION
(a)
Remove the bolt and suction port union.
(b)
Remove the O-ring from the suction port union.
5.
REMOVE PRESSURE PORT UNION, FLOW CONTROL
VALVE AND SPRING
(a)
Remove the pressure port union, flow control valve and
spring.
(b)
Remove the O-rings from the pressure port union.
6.
REMOVE REAR HOUSING
(a)
Remove the 4 bolts and rear housing.
(b)
Remove the 2 O-rings from the rear housing.
7.
REMOVE WAVE WASHER
8.
REMOVE SIDE PLATE
9.
REMOVE GASKET
10.
REMOVE CAM RING, 10 VANE PLATES AND VANE
PUMP ROTOR
(a)
Remove the cam ring and 10 vane plates.
NOTICE:
Take care not to drop the vane plate.
(b)
Using screwdriver, remove the snap ring and vane pump
rotor from the vane pump shaft.
11.
REMOVE VANE PUMP SHAFT
12.
REMOVE STRAIGHT PINS
Remove the 2 straight pins from the front housing.