Lexus RX300 (MCU15). Service manual — part 540

SA02L–03

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SUSPENSION AND AXLE

TROUBLESHOOTING

SA–1

LEXUS RX300 (RM785E)

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 order. If necessary, replace these parts.

Symptom

Suspect Area

See page

Wanders/pulls

7. Tire (Worn or improperly inflated)

8. Wheel alignment (Incorrect)

9. Steering linkage (Loosen or worn)

10.Hub bearing (Worn)

11.Steering gear (Out of adjustment or broken)

12.Suspension parts (Worn)

SA–2

SA–4

SA–8

–

SA–10

SA–45

SR–31

–

Bottoming

1. Vehicle (Overloaded)

2. Spring (Weak)

3. Shock absorber (Worn)

–

SA–25

SA–80

SA–25

SA–80

Sways/pitches

1. Tire (Worn or improperly inflated)

2. Stabilizer bar (Bent or broken)

3. Shock absorber (Worn)

SA–2

SA–39

SA–92

SA–25

SA–80

Front wheel shimmy

1. Tire (Worn or improperly inflated)

2. Wheel (Out of balance)

3. Shock absorber (Worn)

4. Wheel alignment (Incorrect)

5. Ball joint (Worn)

6. Hub bearing (Worn)

7. Steering linkage (Loose or worn)

8. Steering gear (Out of adjustment or broken)

SA–2

SA–2

SA–25

SA–4

SA–35

SA–10

–

SR–31

Abnormal tire wear

1. Tire (Worn or improperly inflated)

2. Wheel alignment (Incorrect)

3. Shock absorber (Worn)

4. Suspension parts (Worn)

SA–2

SA–4

SA–8

SA–25

SA–80

–

Oil leak from rear differential

1. Oil level (Too high or wrong grade)

2. Rear differential front oil seal (Worn or damaged)

3. Side gear oil seal (Worn or damaged)

4. Companion flange (Loose or damaged)

5. Side gear shaft (Damaged)

SA–58

SA–58

SA–60

SA–57

SA–60

Oil leak from drive pinion shaft

1. Oil level (Too high or wrong grade)

2. Rear differential front oil seal (Worn or damaged)

3. Companion flange (Loose or damaged)

SA–58

SA–58

SA–57

SA078–10

R03031

R14931

Front

R07928

SA–2

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SUSPENSION AND AXLE

TIRE AND WHEEL

LEXUS RX300 (RM785E)

TIRE AND WHEEL

INSPECTION

1.

INSPECT TIRE

(a)

Check the tires for wear and proper inflation pressure.
Cold tire inflation pressure
LHD:

Tire size

Front

kPa (kgf/cm

2

, psi)

Rear

kPa (kgf/cm

2

, psi)

215/70R16

230 (2.3, 33)

230 (2.3, 33)

225/60R17

210 (2.1, 30)

210 (2.1, 30)

RHD:

Tire size

Front

kPa (kgf/cm

2

, psi)

Rear

kPa (kgf/cm

2

, psi)

215/70R16

230 (2.3, 33)

230 (2.3, 33)

(b)

Check the tire runout.
Tire runout: 1.4 mm (0.055 in.) or less

2.

ROTATING TIRES

HINT:
See the illustration for where to rotate each tire when you in-
clude the spare tire rotation.

3.

INSPECT WHEEL BALANCE

(a)

Check and adjust the Off–the–car balance.

(b)

If necessary, check and adjust the On–the–car balance.
Imbalance after adjustment: 8.0 g (0.018 lb) or less

F14042

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SUSPENSION AND AXLE

TIRE AND WHEEL

SA–3

LEXUS RX300 (RM785E)

4.

CHECK WHEEL BEARING LOOSENESS

(a)

Check the backlash in the bearing shaft direction.
Maximum: 0.05 mm (0.0020 in.)

(b)

Check the axle hub deviation.
Maximum: 0.05 mm (0.0020 in.)

5.

CHECK FRONT SUSPENSION FOR LOOSENESS

6.

CHECK STEERING LINKAGE FOR LOOSENESS

7.

CHECK BALL JOINT FOR LOOSENESS

8.

CHECK SHOCK ABSORBER WORKS PROPERLY

S

Check for oil leaks

S

Check mounting bushings for wear

S

Bounce front and rear of the vehicle