Isuzu N-Series. Manual — part 125
POWER STEERING 3B1-19
Side Cover and Sector Shaft Assembly
Disassembly
If the sector shaft is going to be fixed on the bench vice
during disassembly, be sure to protect the sector shaft
with cloth or other soft material.
1. Side Cover
Gradually turn the adjuster screw (1) clockwise,
and the side cover assembly will be lifted. Thus,
you can separate the side cover assembly (2) from
the sector shaft assembly (3).
2. O-ring
3. Back Up Ring
Legend
1. Side cover assembly
5. Sector shaft assembly
2. O-ring
6. Retainer
3. Back up ring
7. Adjuster screw
4. Y-gasket
N3A0453E
N3A0454E
3B1-20 POWER STEERING
4. Y-Gasket
Using needle, scriber or equivalent.
5. Sector Shaft Assembly
Unless otherwise a problem, it is not necessary to
disassembly.
6. Retainer
1) Raise the two lips of the retainer.
2) Using retaining bar.
7. Adjuster Screw
Inspection and Repair
Refer to “Power Steering Unit” in this section.
Reassembly
1. Adjuster Screw
2. Retainer
Discard used retainer and install a new one.
Install and fully tighten the retainer and back off
180 degrees.
Retighten to a torque of 39 N (4 kg /44 lb) and back
off 20 degrees. Check that the adjuster screw turns
smoothly.
Caulk the retainer in position.
3. Sector Shaft Assembly
4. Y-Gasket
Install the gasket so that its lip faces to the bearing.
If the lip is deformed, correct.
Apply grease to Y-gasket.
5. Back Up Ring
When the back up ring is installed, use installer for
alignment.
N3A0147E
N3A0148E
N3A0148E
N3A0147E
POWER STEERING 3B1-21
6. O-ring
7. Side Cover Assembly
Mate the screw hole at the center of the side cover
(1) with the adjuster screw (2) on the sector shaft
assembly (3), and fix the side cover assembly to
the sector shaft assembly by turning the adjuster
screw counterclockwise.
Legend
1. Installer
2. Side cover
N3A0455E
N3A0456E
3B1-22 POWER STEERING
Valve Housing Assembly
Disassembly
1. Piston Assembly
Hold the housing with the piston end facing down-
ward, and turn the stub shaft counterclockwise.
Then, the worn shaft can be removed from the pis-
ton.
Caution:
The steel ball put in the ball race for the piston and worm
shaft will drop inside of the piston. Be careful not to let
the piston fall down.
Legend
1. Piston assembly
4. O-ring
2. Ball, tube, tube grip, screw and washer
5. O-ring
3. Seal ring
6. Valve housing and worm shaft assembly
N3A0457E
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