Mitsubishi Galant. Manual — part 544
POWER STEERING DIAGNOSIS
TSB Revision
POWER STEERING
37A-7
INSPECTION PROCEDURE 5: Squealing noise
DIAGNOSIS
STEP 1. Check the belt tension.
Refer to GROUP 00, Maintenance Service
−
Drive
Belts
Q: Is the belt tension incorrect?
YES :
Adjust the belt tension. (Refer to GROUP
00, Maintenance Service
−
Drive Belts
NO :
Go to Step 2.
STEP 2. Check for seizure in the oil pump.
Q: Is there seizure?
YES :
Replace the part. Then go to Step 3.
NO :
Go to Step 3.
STEP 3. Check symptoms.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
INSPECTION PROCEDURE 6: Hissing noise
DIAGNOSIS
STEP 1. Check for entry of air.
Q: Has air entered?
YES :
.) Then go
to Step 4.
NO :
Go to Step 2.
STEP 2. Check each hose for crushing or
twisting.
Q: Is there fault?
YES :
Repair or replace the hose. Then go to Step
NO :
Go to Step 3.
STEP 3. Check the steering gear box for damage.
Q: Is there damage?
YES :
Repair or replace the part. Then go to Step
NO :
Go to Step 4.
STEP 4. Check symptoms.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
INSPECTION PROCEDURE 7: Droning noise
DIAGNOSIS
STEP 1. Check the oil pump or oil pump bracket
installation.
Q: Is the oil pump or oil pump bracket installation
correct?
YES :
Go to Step 2.
NO :
Repair it. Then go to Step 3.
STEP 2. Check the oil pump for damage.
If a slight "beat noise" is produced by the oil pump
when the steering wheel is turned fully and held in
that positon, this is not a malfunction.
Q: Is there damage?
YES :
Replace the oil pump. Then go to Step 3.
NO :
Go to Step 3.
STEP 3. Check symptoms.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
POWER STEERING DIAGNOSIS
TSB Revision
POWER STEERING
37A-8
INSPECTION PROCEDURE 8: Squeaking noise
DIAGNOSIS
STEP 1. Check for interference of the wheel and vehicle
body.
If interfering, adjust the steering angle.
(1) Place the front wheel on a turning radius gauge and
measure the steering angle.
Standard value:
(2) If the steering angle is not within the standard value, adjust
the toe-in.
Standard value: 0
±±±±
3 mm (0
±±±±
0.12 inch)
(3) Adjust the toe-in by undoing the clip and turning the left and
right tie rod turnbuckles by the same amount (in opposite
directions).
NOTE: The toe will move out as the left turnbuckle is turned
toward the front of the vehicle and the right turnbuckle is
turned toward the rear of the vehicle.
Q: Is the steering angle normal?
YES : Go to Step 2.
NO : Adjust the steering angle. Then go to Step 3.
STEP 2. Check the steering gear box for damage.
Q: Is there damage?
YES : Repair or replace the part. Then go to Step 3.
NO : Go to Step 3.
STEP 3. Check symptoms.
Confirm that no noise is generated.
Q: Is there noise?
YES : Repeat to Step 1.
NO : Diagnosis is complete.
INSPECTION PROCEDURE 9: Vibration
NOTE: A slight vibration may be felt when the stationary steering effort is made due to the condition of the
road surface. To check whether the vibration actually exists or not, test-drive the vehicle on a dry concrete or
asphalt surface. Moreover, a very slight amount of vibration is not a malfunction.
DIAGNOSIS
STEP 1. Check for entry of air.
Q: Has air entered?
YES :
Bleed the air. (Refer to
.) Then go
to Step 3.
NO :
Go to Step 2.
ITEMS
2.4L ENGINE
3.0L ENGINE
Inside wheel
36
°
36'
±
2
°
00'
33
°
06'
±
2
°
00'
Outside wheel (refer-
ence)
30
°
42'
28
°
30'
AC000756AB
AC001078 AB
CLIP
POWER STEERING DIAGNOSIS
TSB Revision
POWER STEERING
37A-9
STEP 2. Check the steering gear box for damage.
Q: Is there damage?
YES :
Repair or replace the part. Then go to Step
NO :
Go to Step 3.
STEP 3. Check symptoms.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
INSPECTION PROCEDURE 10: Oil leakage from hose connection
DIAGNOSIS
STEP 1. Check for loosening of the flare nut.
Q: Is the flare nut loose?
YES :
Tighten it to 15 N
⋅
m (11 ft-lb). Then go to
Step 3.
NO :
Go to Step 2.
STEP 2. Check the insertion of the hose and the
clamp installation state.
Q: Are they correct?
YES :
Go to Step 3.
NO :
Repair or replace the part. Then go to Step
3.
STEP 3. Check symptoms.
Check that no oil is leaking.
Q: Is there oil leakage?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
INSPECTION PROCEDURE 11: Oil leakage from hose assembly
DIAGNOSIS
STEP 1. Check the hose for damage or clogging.
Q: Is the hose damaged or clogged?
YES :
Repair or replace it. Then go to Step 2.
NO :
Go to Step 2.
STEP 2. Check symptoms.
Check that no oil is leaking.
Q: Is there oil leakage?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
INSPECTION PROCEDURE 12: Oil leakage from oil reservoir
DIAGNOSIS
STEP 1. Check the oil reservoir for damage.
Q: Is there damage?
YES :
Repair or replace it. Then go to Step 3.
NO :
Go to Step 2.
STEP 2. Check for overflowing.
Q: Is there overflowing?
YES :
Adjust fluid level. Then go to Step 3.
NO :
Go to Step 3.
STEP 3. Check symptoms.
Q: Is there oil leakage?
YES :
Repeat t to Step 1.
NO :
Diagnosis is complete.
POWER STEERING DIAGNOSIS
TSB Revision
POWER STEERING
37A-10
INSPECTION PROCEDURE 13: Oil leakage from oil pump
DIAGNOSIS
STEP 1. Check the oil pump body for damage.
Q: Is there damage?
YES :
Replace the part. Then go to Step 3.
NO :
Go to Step 2.
STEP 2. Check the O-ring or oil seal for damage.
Q: Is there damage?
YES :
Replace the part. Then go to Step 3.
NO :
Go to Step 3.
STEP 3. Check symptoms.
Check that no oil is leaking.
Q: Is there oil leakage?
YES :
Repeat t to Step 1.
NO :
Diagnosis is complete.
INSPECTION PROCEDURE 14: Oil leakage from gear box
DIAGNOSIS
STEP 1. Check the gear box housing for damage.
Q: Is there damage?
YES :
Replace the part. Then go to Step 3.
NO :
Go to Step 2.
STEP 2. Check the oil-ring or oil seal for damage.
Q: Is there damage?
YES :
Replace the part. Then go to Step 3.
NO :
Go to Step 3.
STEP 3. Check symptoms.
Check that no oil is leaking.
Q: Is there oil leakage?
YES :
Repeat to Step 1.
NO :
Diagnosis is complete.
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