Toyota Corolla 2004 Repair Manual - VANE PUMP ASSY

51–8
POWER STEERING VANE PUMP ASSY
NOTICE:
When using a vise, do not over tighten. When installing, coat the parts indicated by the arrows with power steering fluid
(See page 51–7).
1. REMOVE FRONT WHEEL RH
2. DRAIN POWER STEERING FLUID
3. REMOVE ENGINE UNDER COVER RH
4. REMOVE FAN AND GENERATOR V BELT
5. DISCONNECT OIL RESERVOIR TO PUMP HOSE NO.1
(a) Remove the clip and disconnect the oil reservoir to pump hose No.1.
6. DISCONNECT PRESSURE FEED TUBE ASSY
SST
(a) Using SST, disconnect the pressure feed tube assy.
SST 09023–38400
(b) Remove the bolt and disconnect the pressure feed tube
clamp.
5107W–01
F42474
7. REMOVE VANE PUMP ASSY
(a) Disconnect the oil pressure switch connector. (b) Remove the 2 bolts, nuts and vane pump assy.
C80321
8. REMOVE VANE PUMP BRACKET REAR
(a) Remove the bolt and vane pump bracket rear.
9. FIX VANE PUMP ASSY
(a) Using SST, hold the vane pump assy in a vise.
SST 09630–00014 (09631–00132)
2004 COROLLA (RM1037U)
SST
F42477
1543Author: Date:
51–9
POWER STEERING V ANE PUMP ASSY
10. REMOVE POWER STEERING SUCTION PORT UNION
(a) Remove the bolt and power steering suction port union. (b) Remove the O–ring from the power steering suction port union.
11. REMOVE FLOW CONTROL VALVE
(a) Remove the pressure port union. (b) Remove the O–ring from the pressure port union. (c) Remove the flow control valve and flow control valve compression spring.
12. REMOVE POWER STEERING OIL PRESSURE SWITCH NOTICE: Be careful so that oil pressure switch is not dropped or strongly damaged, however if it is damaged replace it with a new one.
13. REMOVE VANE PUMP HOUSING REAR
(a) Remove the 4 bolts and vane pump housing rear from the vane pump housing front. (b) Remove the O–ring from the vane pump housing front.
14. REMOVE W/PULLEY SHAFT SUB–ASSY
(a) Using a screwdriver, remove the snap ring from the w/ pulley shaft sub–assy. (b) Remove the w/ pulley shaft sub–assy.
15. REMOVE VANE PUMP ROTOR
(a) Remove the 10 vane plates. (b) Remove the vane pump rotor.
16. REMOVE VANE PUMP CAM RING
C65368
C65369
17. REMOVE VANE PUMP SIDE PLATE FRONT
(a) Remove the side plate from the pump housing front. (b) Remove the O–ring from the side plate front.
(c) Remove the O–ring from the pump housing front.
2004 COROLLA (RM1037U)
1544Author: Date:
51–10
Vane Pump Shaft
SST
Bushing
Front Housing
POWER STEERING V ANE PUMP ASSY
18. REMOVE VANE PUMP HOUSING OIL SEAL
(a) Using SST and a hammer, remove the vane pump hous-
ing oil seal. SST 09631–10030
NOTICE: Be careful not to damage the pump housing.
F42143
19. INSPECT OIL CLEARANCE
(a) Using a micrometer and a caliper gauge, measure the oil
seal clearance.
Standard clearance:
0.021 – 0.043 mm (0.0008 – 0.0017 in.) Maximum clearance: 0.07 mm (0.0028 in.)
If it is more than the maximum, replace the vane pump assy.
F09875
Height
Length
Thickness
Feeler Gauge
20. INSPECT VANE PUMP ROTOR AND VANE PLATES
(a) Using a micrometer, measure the height, thickness and
length of the vane plates.
Minimum height: 7.6 mm (0.299 in.) Minimum thickness: 1.405 mm (0.0553 in.) Minimum length: 11.993 mm (0.4722 in.)
N00372
(b) Using a feeler gauge, measure the clearance between a
side face of the vane pump rotor groove and vane plate.
Maximum clearance: 0.03 mm (0.0012 in.)
If it is more than the maximum, replace the vane pump assy.
R10282
21. INSPECT FLOW CONTROL VALVE
(a) Coat the flow control valve with power steering fluid and
check that it falls smoothly into the flow control valve hole by its own weight.
2004 COROLLA (RM1037U)
F41493
1545Author: Date:
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