Isuzu N-Series. Manual — part 131
MANUAL STEERING 3B2-9
Sector Shaft and Needle Bearing Play
Limit : 0.2 mm (0.008 in)
Ball Nut Axial Play
Limit : 0.1 mm (0.004 in)
Reassembly
1. Gear Box
2. Bearing
3. Bearing
4. Oil seal
5. Ball Nut and Worm Shaft
6. End Cover
1) When installing, be careful not to damage the
oil seal.
Taping the splines will provide some protection.
2) Adjust the starting torque of steering input shaft
by turning the end cover with a special tool.
Wrench : 5-8840-2053-0
N3A0271E
N3A0272E
N3A0209E
N3A0266E
3B2-10 MANUAL STEERING
Starting Torque
0.34 — 0.64 N
⋅m (0.035 — 0.065 kg⋅m/0.25 — 0.47 lb⋅ft)
Steering Shaft Driver : 5-8840-2054-0
7. Lock Nut
Steering Lock Nut Wrench : 5-8840-2052-0
Tighten:
• Lock Nut to 177 N
⋅m (18 kg⋅m/30 lb⋅ft)
8. Sector Shaft
Align the center tooth (1) of ball nut (2) with the
center tooth (1) of the sector shaft (3).
9. Needle Bearing
10. Oil Seal
11. Needle Bearing
12. Adjuster Shim
13. Adjuster Screw
Adjust the clearance and check that the adjuster
screw slides freely.
Clearance
0.1 mm (0.0039 in)
Adjust Shims Available
1.53 mm (0.060 in), 1.56 mm (0.061 in), 1.59 mm (0.063
in), 1.62 mm (0.064 in), 1.65 mm (0.065 in)
N3A0265E
N3A0277E
N3A0264E
N3A0192E
MANUAL STEERING 3B2-11
14. Gasket
15. Side Cover
Tighten:
• Side cover bolt to 44 N
⋅m (4.5 kg⋅m/33 lb⋅ft)
16. Lock Nut
Adjust the backlash between the sector gear and
ball nut.
1) Install the pitman arm.
2) Set the sector shaft in a straight ahead position.
3) With the adjuster screw, adjust the backlash to
the specification.
Backlash (at End of Pitman Arm)
0.2 mm (0.0079 in) or less
4) Lock adjuster screw with lock nut.
Tighten:
• Lock Nut to 25 N
⋅m (2.5 kg⋅m/18 lb⋅ft)
5) Inspect the starting torque of the steering input
shaft.
Starting Torque
0.54 — 1.03 N
⋅m (0.055 — 0.105 kg⋅m/0.40 — 0.76 lb⋅ft)
Steering Shaft Driver : 5-8840-2054-0
Legend
1. Adjuster screw
2. Clearance
3. Shim
4. Sector shaft
N3A0280E
N3A0281E
N3A0220E
N3A0221E
3B2-12 MANUAL STEERING
Manual Steering Unit (NPR, NQR)
Disassembly
1. Lock Nut
2. Side Cover
1) Turn the adjuster screw counterclockwise
slightly, then remove the side cover fixing bolt.
2) Turn the adjuster screw clockwise with the side
cover held from turning.
Legend
1. Lock nut
9. Oil seal
2. Side cover
10. End cover
3. Gasket
11. Adjuster shim
4. Adjuster screw
12. Ball nut and worm shaft
5. Adjuster shim
13. Bearing
6. Needle bearing
14. Bearing
7. Sector shaft
15. Gear box
8. Needle bearing
N3A0284E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст