Isuzu N-Series. Manual — part 817
7B-38 MANUAL TRANSMISSION (MSB)
Disassembly
Top Gear Shaft Assembly
1. Snap Ring
2. Ball Bearing
• Use the bearing remover to remove the bearing
from top gear shaft.
Bearing Remover: 5-8840-0587-0
Main Shaft Assembly
3. Thrust Washer
4. 5th Gear
5. Block Ring
• Attach a backing plate to the vise, secure the
main shaft at the top end, and remove the 5th
gear and block ring.
6. Snap Ring
Notice:
Snap ring of appropriate sizes are combined to fill the
gap to the clutch hub. Never mix them with other snap
rings.
N7A0015E
N7A0016E
N7A0017E
N7A0018E
MANUAL TRANSMISSION (MSB) 7B-39
7. 5th/Reverse Synchronizer Assembly
8. Reverse Gear
• Use a bench press and the bearing remover to
remove the reverse gear together with the 5th/
reverse synchronizer assembly.
Bearing Remover: 5-8840-0587-0
• Disassemble synchronizer assemblies into the
clutch hub, sleeve, inserts (3 pieces) and insert
springs (2 pieces).
9. Needle Bearing
10. Snap Ring
• Attach a backing plate to the vise, secure the
main shaft at the spline end, and remove the
snap ring at the end.
Notice:
Snap ring of appropriate sizes are combined to fill the
gap to the clutch hub. Never mix them with other snap
rings.
11. 3rd/4th Synchronizer Assembly
12. Block Ring
13. 3rd Gear
• Use a bench press and the bearing remover to
remove the 3rd gear together with the 3rd/4th
synchronizer assembly and the block ring.
Bearing Remover: 5-8840-0587-0
• Disassemble synchronizer assemblies into the
clutch hub, sleeve, inserts (3 pieces) and insert
springs (2 pieces).
N7A0019E
N7A0020E
N7A0021E
N7A0022E
7B-40 MANUAL TRANSMISSION (MSB)
14. Needle Bearing
15. Snap Ring
Notice:
Snap ring of appropriate sizes are combined to fill the
gap to the clutch hub. Never mix them with other snap
rings.
16. Thrust Washer
17. 2nd Gear
18. Needle Bearing
19. Block Ring
N7A0023E
N7A0024E
N7A0025E
N7A0026E
MANUAL TRANSMISSION (MSB) 7B-41
20. Snap Ring
Notice:
Snap ring of appropriate sizes are combined to fill the
gap to the clutch hub. Never mix them with other snap
rings.
21. 1st/2nd Synchronizer Assembly
22. Block Ring
23. 1st Gear
• Use a bench press to remove the 1st gear to-
gether with the 1st/2nd synchronizer assembly
and the block ring.
• Disassemble synchronizer assemblies into the
clutch hub, sleeve, inserts (3 pieces) and insert
springs (2 pieces).
24. Needle Bearing
Counter Shaft Assembly
25. Snap Ring
N7A0027E
N7A0028E
N7A0029E
N7A0030E
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