Lexus GS300/400 (2000 year). Service manual - part 228

F02549

Vane Pump Pulley

Vane Pump Shaft

Front Housing

Spring

Flow Control
Valve

Rear Housing

Ware Washer

Cam Ring

x10

Vane Pump Rotor

Vane Plate

Side Plate

 Gasket

 Bearing

 Snap Ring

 Snap Ring

 Oil Seal

 O–Ring

 O–Ring

 Straight Pin

Solenoid Valve

Oil Reservoir

 O–Ring

13 (130, 9)

24 (240, 17)

43 (440, 32)

69 (700, 51)

*51 (524, 38)

24 (240, 17)

N·m (kgf·cm, ft·lbf)

: Specified torque

 Non–reusable part

Power steering fluid

* For use with SST

SR–20

–

STEERING

POWER STEERING VANE PUMP (2JZ–GE)

2190

SR0DF–03

SR–2

–

STEERING

TROUBLESHOOTING

2172

TROUBLESHOOTING

PROBLEM SYMPTOMS TABLE

Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts.

Symptom

Suspect Area

See page

Hard steering

3. Tires (Improperly inflated)

4. Power steering fluid level (Low)

5. Drive belt (Loose)

6. Front wheel alignment (Incorrect)

7. Steering system joints (Worn)

8. Suspension arm ball joints (Worn)

9. Steering column (Binding)

10.Power steering gear

11.PPS system

SA–2

SR–4

–

SA–4

–

SA–27

SA–37

–

SR–42

SR–59

Poor return

1. Tires (Improperly inflated)

2. Front wheel alignment (Incorrect)

3. Steering column (Binding)

4. Power steering gear

SA–2

SA–4

–

SR–42

Excessive play

1. Steering system joints (Worn)

2. Suspension arm ball joints (Worn)

3. Intermediate shaft, Universal joint, Sliding yoke (Worn)

4. Front wheel bearing (Worn)

5. Power steering gear

6. PPS system

–

SA–27

SA–37

–

SA–10

SR–42

SR–59

Abnormal noise

1. Power steering fluid level (Low)

2. Steering system joints (Worn)

3. Power steering gear

SR–4

–

SR–42

HINT:
When the problem occurs on the power tilt and telescopic steering system, refer to the DI section.
(See page 

DI–517

)

SR0DR–01

R06091

F02556

–

STEERING

POWER STEERING VANE PUMP (2JZ–GE)

SR–21

2191

REMOVAL

1.

REMOVE ENGINE UNDER COVER

Remove the 16 bolts.
2.

REMOVE DRIVE BELT

Loosen the drive bolt tension by turning the drive belt tensioner
clockwise, and remove the belt.
3.

REMOVE RETURN HOSE

Remove the clip and disconnect the hose.
4.

REMOVE PRESSURE FEED TUBE

Remove the union bolt and gasket.

5.

REMOVE PS VANE PUMP ASSEMBLY

(a)

Disconnect the connector.

(b)

Remove the 2 bolts.

SR0DS–01

F02544

F02545

SST

F02547

SST

W01277

Vane Pump

Press
Vinyl  Tape

Front Housing

Oil Seal
Bearing

Shaft

SR–22

–

STEERING

POWER STEERING VANE PUMP (2JZ–GE)

2192

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:
0.25 N·m (2.5 kgf·cm, 2.2 in.·lbf) or less

2.

REMOVE VANE PUMP PULLEY

Using SST to stop the pulley rotating, remove the pulley set nut.

SST

09960–10010  (09962–01000, 09963–01000)

3.

REMOVE OIL RESERVOIR

(a)

Remove the 3 bolts and oil reservoir.

(b)

Remove the O–ring from the oil reservoir.

4.

REMOVE SOLENOID VALVE

(a)

Using SST, remove the valve.
SST

09922–10010

NOTICE:
Use SST 09922–10010 in the direction shown in the illustra-
tion.
(b)

Remove the O–ring from the valve.

5.

REMOVE FLOW CONTROL VALVE AND SPRING

6.

REMOVE REAR HOUSING

(a)

Remove the 2 bolts.

(b)

Remove the 2 O–rings from the housing.

7.

REMOVE WAVE WASHER

8.

REMOVE SIDE PLATE

9.

REMOVE CAM RING, 10 VANE PLATES AND VANE
PUMP ROTOR

NOTICE:
Be careful not to drop the plate.
10.

REMOVE STRAIGHT PINS

Remove the 2 pins from the front housing.
11.

REMOVE GASKET

12.

REMOVE VANE PUMP SHAFT WITH BEARING

(a)

Using snap ring pliers, remove the snap ring from the front
housing.

(b)

Wind vinyl tape on the serrated part of the vane pump
shaft.

(c)

Press out the shaft with the bearing.

NOTICE:
Be careful not to damage the oil seal lip.