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CJ2A Operation and Care
Manual -- Proper Maintenance
(part 5 -- Transmission and Axles)
CLUTCH
The clutch is of the single, dry plate type consisting of a pressure plate assembly, having three
pressure springs, three release levers; and a spring cushioned, faced driving plate mounted on a
hardened steel, splined hub. Clutch release is accomplished by moving the release bearing toward the
flywheel. The three springs located in the clutch bracket provide the driving pressure, thus, when the
foot pressure is removed from the pedal, the springs force the pressure plate forward against the
driven plate, gradually and smoothly applying power to the wheels.
As the clutch facings wear, the clearance between the release levers and the release bearing is
decreased. The effect on the clutch pedal is to decrease the free travel, which is the distance the pedal
moves away from the toe board before the release bearing comes into contact with the release levers.
Adjusting the length of the clutch control cable to increase the free travel of the clutch pedal, restores
the proper clearance between the release levers and the release bearing. See Fig. 20.
The release bearing and clutch pedal must be in their proper positions. No adjustment of the clutch proper is required to
compensate for wear of the facings, but a clearance of approximately 1/8” (3.12 mm.) should be maintained between the
release levers Fig. 21, No. 14 and the release bearing No. 7. To obtain this clearance, adjust the length of the clutch control
cable No. 18, so that the pedal has 1” (25.40 mm.) free movement from the fully engaged position before any resistance can be
felt.
CAUTION: Avoid the practice of resting the foot continuously on the clutch pedal while driving and do not slip the clutch
excessively instead of shifting gears. Slipping the clutch causes excessive heat, with the result that the clutch is finally made
inoperative.
1. Crankshaft
2. Clutch Shaft Bearing
3. Flywheel Ring Gear
4. Clutch Facings
5. Clutch Pressure Plate
6. Clutch Pressure Plate Bracket
7. Clutch Release Bearing
8. Clutch Release Bearing Spring
9. Transmission Main Drive Gear Bearing
Retainer
10. Transmission Main Drive Gear Bearing
11. Clutch Driven Plate and Hub
12. Clutch Pressure Spring
13. Clutch Adjusting Screw
14. Clutch Lever
15. Clutch Release Bearing Carrier
16. Clutch Control Lever Fulcrum
17. Clutch Control Lever
18. Transmission Main Drive Gear
1. Main Drive Gear
2. Main Drive Gear Bearing Retainer
3. Main Drive Gear Bearing Retainer Oil Seal
4. Main Drive Gear Snap Ring
5. Main Drive Gear Bearing Snap Ring
6. Main Drive Gear Bearing
7. Synchronizer Shifting Plate
8. Shift Rail Cap
9. Shift Rail -- High and Intermediate
10. Shift Rail Poppet Ball
11. Shift Rail Poppet Spring
12. Shift Fork -- High and Intermediate
13. Control Housing
14. Contol lever Support Spring
15. Control Lever Housing Pin
16. Control Lever Fulcrum Ball
17. Gear Shift Lever
18. Shift Fork -- Low and Reverse
19. Sliding Gear -- Low and Reverse
20. Main Shaft Bearing Adapter
21. Main Shaft Bearing
22. Main Shaft Washer
23. Main Shaft Nut
24. Main Shaft
25. Idler and Countershaft Lock Plate
26. Countershaft Gear Bearing Rollers
27. Countershaft Thrust Washer Rear --
Steel
28. Countershaft
29. Coutnershaft Thrust Washer Rear -- Bronze
30. Countershaft Gears
31. Transmission Case
32. Main Shaft Second Speed Gear
33. Crankshaft Bearing Spacer
34. Synchronizer Blocking Ring
35. Countershaft Thrust Washer Front -- Bronze
36. Countershaft Bearing Washer
37. Intermediate and High Speed Clutch Sleeve
38. Intermediate and High Clutch Hub
39. Synchronizer Ring
40. intermediate and High Clutch Hub Snap Ring
41. Main Shaft Pilot Bearing Roller
TRANSMISSION ASSEMBLY
The transmission is a heavy duty, three speed synchromesh type unit with cane type shift. It is attached to the rear face of the
flywheel bell housing and is supported on a rubber insulator at the frame centre cross member wich forms the rear engine
support. Shift is smooth and positive through a cane type control lever mounted in a shift housing at the top of the assembly.