Mitsubishi Galant 9G. Manual — part 1513

37-2

POWER STEERING OIL PUMP
ASSEMBLY . . . . . . . . . . . . . . . . . . . .

37-55

REMOVAL AND INSTALLATION
<2.4L ENGINE> . . . . . . . . . . . . . . . . . . . . .

37-55

REMOVAL AND INSTALLATION
<3.8L ENGINE> . . . . . . . . . . . . . . . . . . . . .

37-56

INSPECTION . . . . . . . . . . . . . . . . . . . . . . .

37-57

POWER STEERING HOSES. . . . . . .

37-58

REMOVAL AND INSTALLATION . . . . . . . .

37-58

SPECIFICATIONS . . . . . . . . . . . . . . .

37-64

FASTENER TIGHTENING SPECIFICATIONS

37-64

GENERAL SPECIFICATIONS . . . . . . . . . .

37-65

SERVICE SPECIFICATIONS . . . . . . . . . . .

37-66

LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . .

37-67

SEALANT . . . . . . . . . . . . . . . . . . . . . . . . . .

37-67

GENERAL DESCRIPTION

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POWER STEERING

37-3

GENERAL DESCRIPTION

M1372000100360

Power steering has been adopted in all vehicles to
make the steering system easier to handle.

• A 4-spoke steering wheel is used.

• A steering column has a shock absorbing mecha-

nism and a tilt steering mechanism.

• A rack and pinion steering gear is used.

• An oil pump responsive to engine RPM is used,

to enhance steering stability at high speeds.

• The separate plastic resin oil reservoir is used to

reduce weight and to make the fluid level check-
ing easier.

AC306240

STEERING
WHEEL

STEERING COLUMN
ASSEMBLY

PRESSURE HOSE

OIL RESERVOIR

SUCTION HOSE

RETURN TUBE
ASSEMBLY

OIL PUMP
ASSEMBLY

POWER STEERING GEAR
AND LINKAGE ASSEMBLY

COOLER TUBE
ASSEMBLY

RETURN
HOSE (M)

RETURN
HOSE (R)

<2.4L ENGINE>

AB

AC306241

PRESSURE HOSE

OIL RESERVOIR

SUCTION HOSE

RETURN TUBE
ASSEMBLY

OIL PUMP
ASSEMBLY

<3.8L ENGINE>

AB

POWER STEERING DIAGNOSIS

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POWER STEERING

37-4

POWER STEERING DIAGNOSIS

INTRODUCTION TO POWER STEERING DIAGNOSIS

M1372008500209

Hydraulic power steering is used for all vehicles.
Faults in the power steering can include excessive
play of the steering wheel, difficult steering wheel
operation, noise, vibration, and oil leaks, etc. Possi-
ble causes of these faults can include defects in the
gear box, oil pump or steering linkage.

POWER STEERING DIAGNOSIS TROUBLESHOOTING STRATEGY

M1372007300202

Use these steps to plan your diagnostic strategy. If
you follow them thoroughly, you will be sure that you
have exhausted most of the possible ways to find a
power steering fault.
1. Gather information from the customer.

2. Verify that the condition described by the

customer exists.

3. Find the malfunction by following the Symptom

Chart.

4. Verify malfunction is eliminated.

SYMPTOM CHART

M1372007600225

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE PAGE

Excessive play of steering wheel

1

P.37-5

Difficult steering wheel operation (insufficient power assist)

2

P.37-5

Rattling noise

3

P.37-7

Shrill noise

4

P.37-8

Squealing noise

5

P.37-8

Hissing noise

6

P.37-9

Droning noise

7

P.37-9

Squeaking noise

8

P.37-10

Vibration

9

P.37-11

Oil leakage from hose connection

10

P.37-12

Oil leakage from hose assembly

11

P.37-12

Oil leakage from oil reservoir

12

P.37-12

Oil leakage from oil pump

13

P.37-13

Oil leakage from steering gear

14

P.37-13

POWER STEERING DIAGNOSIS

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POWER STEERING

37-5

SYMPTOM PROCEDURES

INSPECTION PROCEDURE 1: Excessive Play of Steering Wheel

DIAGNOSIS

STEP 1. Check for looseness at the steering shaft coupling
section and at the steering wheel linkage.
Q: Is there any looseness?

YES : Repair or replace the part. And then go to Step 3.
NO : Go to Step 2.

STEP 2. Check the steering wheel free play.
(1) With the engine running (hydraulic operation), set the front

wheels straight ahead.

(2) Slightly move the steering wheel in both directions, and

measure the play on the steering wheel circumference
before the wheels start to move.

Limit: 30 mm (1.2 inch)

(3) If the free play exceeds the limit, set the steering wheel

straight ahead with the engine stopped. Apply
approximately 5 N (1.1 pound) to the steering
circumference and check the play.

Standard value (steering wheel play with engine
stopped): 10 mm (0.4 inch) or less

Q: Does the play exceed the standard value?

YES : Remove the steering gear box (refer to

P.37-33

) and

check the total pinion torque (refer to

P.37-41

). And

then go to Step 3.

NO : Go to Step 3.

STEP 3. Check the steering wheel play.
Verify that the steering wheel play is not excessive.
Q: Is the steering wheel play excessive?

YES : Repeat from Step 1.
NO : The procedure is complete.

INSPECTION PROCEDURE 2: Difficult Steering Wheel Operation (Insufficient Power Assist)

DIAGNOSIS

STEP 1. Check the drive belt for damage.
Q: Is the drive belt damaged?

YES : Replace the drive belt. And then go to Step 9.
NO : Go to Step 2.

ACX01122 AB