Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual - part 1998

STEERING  3B-71

8. Filter

7. Retaining ring

6. Valve

5. O-ring

Be sure to discard used parts, and always used new parts
for installation.

4. Connector

Connector Torque

N

⋅m (kgf⋅m / lb⋅ft)

74 (7.5 / 54)

3. O-ring

Be sure to discard used parts, and always used new parts
for installation.

2. Pipe, Suction

1. Bolt

Suction Pipe Bolt Torque

N

⋅m (kgf⋅m / lb⋅ft)

16 (1.6 / 12)

3B-72  STEERING

TROUBLESHOOTING

INSPECTION PROCEDURES FOR STEERING SYSTEM

COMPONENT AND TEST

PROCEDURE

HANDLE

Check for

play and

slack

1. Place the steering wheel in the straight forward position.  Gently move the

wheel to the right and to the left.  About ten millimeters of play in either

direction should be present before the front tires begin to move.

If the vehicle is equipped with power steering, the engine should be running

when these tests are made.

2. Grasp the steering wheel firmly with both hands.  Exert force in an up and

down direction on the steering column.  There should be no play.

3. Move the steering wheel to the right and to the left.  Check to see the

steering shaft.

Make sure that there is no slack in those areas where parts are joined

together.

Check the

operating

condition of

the system

1. Make the following checks while actually driving the vehicle.

a. Check the position of the steering wheel when the vehicle is traveling

straight ahead.

b. Make sure that the vehicle does not have a tendency to steer to the right

or the left.

c. There should be no excessive vibration present at the steering wheel.

d. Turn the vehicle as sharply as possible to both the right and the left.

When the steering wheel is turned fully in either direction, check for

abnormal noise.

Neither should the wheel feel overly heavy when it is fully turned to either

the left or the right.  Loosen your grip on the steering wheel.  It should

return to its center position.

GEAR BOX

Check for

oil leakage

1. Check all parts of the steering unit (the oil seals of the front cover, side

cover, sector shaft, etc.) to make sure that there is no oil leakage.

Check for

looseness

in the

assembly

1. With the wheels of the vehicle on the ground (the vehicle should not be

jacked up), have an assistant or helper turn the steering wheel to the right

and to the left.  As he does this, you should carefully check all areas where

the steering unit is attached to the frame for looseness and other possible

problems.

Check for

bearing

backlash

1. Check the condition of the connections between the steering shaft and the

bearings.  Move the steering shaft in the direction of the axle and make sure

that there is no backlash present.

2. Rotate the steering shaft.  There should be no abnormal noise.  It should

rotate smoothly and there should be no feeling of roughness.

Check to make sure that there is no abnormal or excessive bearing wear.

Check for

gear

backlash

1. The front wheels should be facing straight ahead.  Have an assistant or

helper grasp the drop arm so as to immobilize it.  Now try to turn the steering

wheel.  Backlash should not exceed one millimeter.

Inspect the

sector shaft

for cracks

1. Remove the steering unit from the vehicle and break it down into its

component parts.  Carefully inspect the sector shaft for cracks or other

damage.

STEERING  3B-73

COMPONENT AND TEST

PROCEDURE

RODS AND

ARMS

Check for

play,

backlash,

and

damage

1. With the wheels of the vehicle on the ground (the vehicle should not be

jacked up), have an assistant or helper turn the steering wheel to the right

and to the left.  As he does this, you should carefully check the connecting

points of all the parts for play, slack, or damage.

a. Specifically check the pitman arm, the intermediate rod, the tie rods, the

tie rod ends, the knuckle arms and the relay lever.

2. Carefully check all of the pins for cracks and other damage.

3. Make sure that the rod end boots and related areas are not cracked or

otherwise damaged.

Check the

coupling

parts for

abrasion

and other

abnormal

conditions

1. The ball joints and the rubber bushings should be free from abrasion or any

other damage.

2. Pay careful attention to the coupling areas.  Make sure that everything is

properly connected.

Check for

cracks in

the knuckle

arms and

also for

poor

knuckle

attachment

1. Make sure that both the knuckle arms and the tie rod arms are free from

cracks.

The fit between the knuckles and the tapers should be secure.

Look for any abnormal coloring which may indicate trouble.

KNUCKLES

Check for

loose and

damaged

joints

1. Jack up the front axle and the front crosspiece.  By hand, rotate the two front

tires in either direction.  Check that the king pins and the ball joints are free

of play or slack.

If play or slack is present, have an assistant or helper, hold down the brake

pedal.  Using a dial gauge, once again check the wheels for play and

vibration.  It is possible that the problem lies not with the steering system but

with the wheel bearings.

Check the

gap

between

the steering

knuckles

and the

front axle

1. Use a thickness gauge or other appropriate tool to measure the width of the

gap between the steering knuckles and the front axle.  Measure in the

direction of the king pin.

After measurement, thrust washers may be inserted to alter the gap.

3B-74  STEERING

1.  HARD STEERING WITH POOR STEERING WHEEL RETURN

Checkpoint

Trouble Cause

Countermeasure

Steering shaft bearings

Steering linkage

Front wheel alignment

Oil level in the reservoir

(Power steering only)

Replace the bearings

Repair or replace the joint ball

and/or the ball seat

Correct the front wheel

alignment

Replenish the oil

Bearings sticking or rusted

Joint ball sticking or rusted

Front wheels out of alignment

Insufficient oil

Steering wheel play

Adjust the play

Correct the tire inflation

pressure

Insufficient play

Low tire inflation pressure

OK

OK

OK

OK

Continued on the next page

NG

NG

NG

NG

NG

NG

OK

OK

Tire inflation pressure