Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Service manual — part 2045
3B-70 STEERING
REASSEMBLY
27. Rear Housing
26. Pin
25. Cam
24. Rotor and Vane
1. Install the rotor with its punch mark facing the front
housing.
2. Install the vanes with curved face in contact with the
inner wall of the cam.
23. Pressure plate
CAUTION:
When install pressure plate, be careful not to damage its
inner surface. Damaged pressure plate may cause poor
pump performance, pump seizure or oil leakage.
22. Front Housing
21. O-ring
Be sure to discard used parts, and always used new parts
for installation.
20. O-ring
Be sure to discard used parts, and always used new parts
for installation.
19. Gasket
Be sure to discard used parts, and always used new parts
for installation.
18. Rear Housing Assembly and Pump Cartridge
17. Bolt
Rear Housing Bolt Torque
N
⋅
m (kgf
⋅
m / lb
⋅
ft)
17.6 (1.8 / 12.8)
16. Oil Seal
Be sure to discard used parts, and always used new parts
for installation.
CAUTION:
When installing the oil seal, be careful not to damage the
oil seal contacting surface of the housing.
15. Retaining Ring
14. Shaft
13. Bearing
12. Shaft Assembly
11. Retaining Ring
10. Pressure Switch
Pressure Switch Torque
N
⋅
m (kgf
⋅
m / lb
⋅
ft)
20 (2.0 / 14)
9. Spring
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.
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