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