Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 1983

STEERING 3B-11

Full level

Min. level

Refilling

1. Connect the fluid lines securely and fill the fluid reservoir

with specified automatic transmission fluid.

2. When the fluid reservoir is filled to the specified level, allow

2 or 3 minutes. While refilling, keep fluid reservoir

replenished as necessary to prevent air from entering the

hydraulic system.

3. Lower the front wheels to the ground. Start and let the

engine idle for a few minutes.

Recheck the fluid level and replenish if necessary.

Fluid Capacity

Liter (US pint/UK pint)

Approx. 1.0 (2.13 / 1.75)

STEERING WHEEL PLAY
Inspection

1. Check the amount of the steering wheel play by turning the

wheel in both directions until the tires begin to move with the

front wheels properly in the straight-ahead position.

Note:
If the vehicle is equipped with a power steering unit, the
wheel free play should be checked with the engine
running.
Free Play

mm(in)

(Manual/Power Steering)

10 - 30 (0.4 - 1.2)

2. Also check the steering wheel for play and looseness in

mount by moving it back and forth and sideways. While

driving check for hard-steering, steering shimmy and

tendency of steering to pull to one side.

Adjustment

1. Align the front wheels properly in the straight ahead

position.

2. Loosen the lock nut on the adjusting screw of the steering

unit.

3. Turn the adjust screw clockwise to decrease free play or

counter-clockwise to increase.

4. After check of specified free play, tighten the lock nut to

specified torque.

Lock Nut Torque

N

⋅m (kgf⋅m/Ib⋅ft)

Manual Steering

24.5

±4.9 (2.5±0.5/18.1±3.6)

Power Steering

41.2

±5.9 (4.2±0.6/30.4±4.3)

3B-12 STEERING

AIR BLEEDING

Fill fluid reservoir with specified automatic transmission fluid
(DEXRON) and turn the steering wheel to lock in both
directions repeatedly, so that level of fluid in the reservoir to the
specified level and start the engine.
Perform the following check with the engine running at idle.
Bleeding is considered to be completed if the following
conditions apply;
(1) Turn the steering wheel to lock in both directions 3 or 4

times.

A buzz is not produced in the hydraulic line.

(2) Stop the engine with steering wheel in a straight ahead

position.

Level of fluid in reservoir does no increase.

Note:
Do not hold the steering wheel in position of lock for more
than 5 seconds, or temperature of fluid increases sharply.

STEERING 3B-13

MEASUREMENT OF FLUID PRESSURE

Measurement of fluid pressure in the power steering system is performed to determine whether or not the oil pump
and power steering unit are functioning normally.

C22. C20 Series Engine Model

4J Series Engine Model

3B-14 STEERING

1.Installation of Tester

• Power Steering Tester : 5-8840-0135-0

(J-29877-A)

Adapter; Power Steering Tester :

5-8840-0136-0

(J-33996)

1

Oil Pressure Gauge with Shut off Valve

2

Shut off Valve

3

Adapter (to steering unit)

4

Adapter (to oil pump)

• Installation Procedure;

Disconnect the hose on the outlet side of the pump.

Connect the gauge hose closest to the power steering

gauge shut off valve to the hose on the vehicle. Connect

the gauge hose furthest from the shut off valve to the

outlet side of the power steering pump.

2.Bleeding

• Open stop valve fully.
• Refer to air bleeding procedure.

3.Measurement of Fluid Pressure

• Open stop valve fully.
• Increase engine speed to 1500 rpm.
• Measure the fluid pressure when the steering wheel is

turned to lock in both directions.

Fluid Pressure

kg/cm

2

(psi/kPa)

95 - 100

(1350 - 1420/9300 - 9800) (C22, C20 Series Engine Model)

85 - 90

(1209 - 1280/8336 - 8826) (4J Series Engine Model)

Diagnosis:

(1) When pressure is higher than Specified pressure, the valve

within the oil pump is defective.

(2) When the pressure is lower than Specified pressure.

• Return steering wheel to straight-ahead position.
• Close stop valve completely.
• Hold engine running at 1500 rpm, and take reading of

the pressure gauge.

Fluid Pressure

kg/cm

2

(psi/kPa)

Possible trouble

95 - 100

(1350 -1420/9300 - 9800)

(C22, C20 Series Engine Model)

85 - 90

(1209 - 1280/8336 - 8826)

(4J Series Engine Model)

Lower than 95 (1350/9300)

(C22, C20 Series Engine Model)

Lower than 85 (1209/8336)

(4J Series Engine Model)

Oil pump

Steering unit