Isuzu N-Series. Manual — part 964
7B-92 Automatic Transmission (Smoother)
Special Tools
Illustration
Tool No.
Tool Name
5-8840-2345-0
Installer
5884023450
Automatic Transmission (Smoother) 7B-93
Main Shaft (5-Speed)
Components
Legend
1. Snap Ring
15. 2nd — 3rd Clutch Hub Assembly Sleeve
2. 4th — 5th Clutch Hub Assembly Sleeve
16. 3rd Block Ring
3. 5th Block Ring
17. 3rd Outside Ring
4. 5th Gear
18. 3rd Inside Ring
5. Needle Bearing
19. Main Shaft
6. Snap Ring
20. Needle Bearing
7. Collar
21. 1st Gear
8. Needle Bearing
22. Bearing
9. 3rd Gear
23. Spacer
10. Needle Bearing
24. Collar
11. 2nd Gear
25. Needle Bearing
12. 2nd Inside Ring
26. Reverse Gear
13. 2nd Outside Ring
27. 1st — Reverse Clutch Hub Assembly and Sleeve
14. 2nd Block Ring
N7A1194E
7B-94 Automatic Transmission (Smoother)
Disassembly
1. Use a bearing remover to remove the following
items simultaneously with a press: bearing,
spacer, collar, reverse gear, needle bearing, 1st —
Reverse clutch hub assembly and sleeve, 1st gear,
and needle bearing.
2. Disassemble the 1st — Reverse clutch hub
assembly and sleeve.
3. Use snap ring pliers to remove the snap ring that
secures the 4th — 5th clutch hub assembly.
4. Use a bearing remover to remove the following
items simultaneously with a press: 4th — 5th clutch
hub assembly and sleeve, 5th block ring, 5th gear,
and needle bearing.
5. Disassemble the 4th — 5th clutch hub assembly
and sleeve.
6. Use snap ring pliers to remove the snap ring that
secures the 3rd gear collar.
Legend
1. Clutch Hub
2. Sleeve
N7A1195E
N7A1196E
Legend
1. Spring
2. Insert Key
3. Clutch Hub
4. Sleeve
N7A1197E
N7A1143E
Automatic Transmission (Smoother) 7B-95
7. Use a bearing remover to remove the following
items from the main shaft simultaneously with a
press: collar, 3rd gear, needle bearing, 3rd inside
ring, 3rd outside ring, 3rd block ring, 2nd — 3rd
clutch hub assembly and sleeve, 2nd block ring,
2nd outside ring, 2nd inside ring, 2nd gear, and
needle bearing.
8. Disassemble the 2nd — 3rd clutch hub assembly
and sleeve.
Inspect each part. Replace or repair as required if
anything is worn or damaged or if any other defect is
discovered.
9. Inspect each of the bearings for the following
characteristics. If any abnormality is detected,
replace the applicable bearing.
• Smoothness of rotation
• Noise
• Damage, rust, or other visible abnormality
• Abnormal play in the thrust direction
10. Inspect the gear bore.
• Use an inside dial gauge to measure the bore
of each gear.
• If the measured value exceeds the limit,
replace the gear.
11. Main shaft runout
• Use a dial gauge to measure the bend of the
main shaft.
Legend
1. Clutch Hub
2. Sleeve
3. Ball
4. Index Block
5. Spring
N7A1199E
N7A1200E
Gear Bore (mm)
Specified Value
Limit
5th Gear
44.009 — 44.025
44.065
3rd Gear
63.010 — 63.029
63.069
2nd Gear
63.010 — 63.029
63.069
1st Gear
63.010 — 63.029
63.069
Reverse Gear
63.010 — 63.029
63.069
N7A1201E
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