4-Speed Transmission Disassembly - Model T-18A - Jeep 1979 CJ-5 Technical & Service Manual

2B-20 MANUAL TRANSMISSION
4^mm TSJIMSMISSION
Page Page
Assembly
21-23
Shift Control Housing
21-27
Cleaning and inspection 2B-22 Specifications 2B-28
Disassembly 2B-20
DISASSEMBLY
(1) Remove transmission-to-transfer case attaching
bolts and remove transmission from transfer case.
(2) Remove and discard transmission-to-transfer
case gasket.
(3) Remove shift control housing.
(4) Remove transfer case drive gear locknut and
washer and remove drive gear and spacer.
N O T E : Before removing the drive gear locknut, move
the third-fourth clutch sleeve forward and the first-
second clutch sleeve rearward to lock the mainshaft
(5) Move clutch sleeves back to Neutral position.
(6) Remove transmission-to-transfer case adapter
(if equipped). Remove and discard oil seal from adapter.
(7) Remove reverse shifting arm pivot pin.
C A U T I O N : The pin is tapered and must be driven out
toward the rear of the case only.
(8) Remove reverse shifting arm, shifting arm shoe,
and pivot. Remove O-ring from pivot and discard O-ring.
(9) Move first-second clutch sleeve to Neutral
position.
(10) Punch alignment marks in front bearing cap
and case for assembly reference and remove bearing cap
and gasket.
(11) Remove lockring from clutch shaft and snap
ring from front bearing (fig. 2B-35).
(12) Remove front bearing from clutch shaft using
Puller J-25152 (fig. 2B-36).
(13) Remove front bearing retainer washer from
clutch shaft.
(14) Remove bearing roller spacer from mainshaft
pilot hub (fig. 2B-35).
Legend
1. M A I N S H A F T PILOT B E A R I N G R O L L E R SPACER
2. T H I R D - F O U R T H B L O C K I N G RING
3. T H I R D - F O U R T H R E T A I N I N G RING
4. T H I R D - F O U R T H S Y N C H R O N I Z E R SNAP RING
5. T H I R D - F O U R T H S H I F T I N G P L A T E (3)
6. T H I R D - F O U R T H C L U T C H H U B
7. T H I R D - F O U R T H R E T A I N I N G RING
8. T H I R D - F O U R T H C L U T C H SLEEVE
9. T H I R D - F O U R T H B L O C K I N G RING
10. T H I R D - F O U R T H GEAR S Y N C H R O N I Z E R ASSEMBLY
1 1 . T H I R D GEAR
12. M A I N S H A F T SNAP RING
13. SECOND GEAR T H R U S T WASHER
14. SECOND GEAR • • - . :
15. M A I N S H A F T
16. SECOND GEAR B L O C K I N G RING
17. M A I N S H A F T SNAP RING
18. FIRST-SECOND C L U T C H HUB
19. FIRST-SECOND S H I F T I N G P L A T E (3)
20. POPPET B A L L (3)
2 1 . POPPET SPRING (3)
22. FIRST-SECOND INSERT SPRING
23. M A I N S H A F T SNAP RING
24. FIRST-SECOND C L U T C H SLEEVE
25. SECOND GEAR S Y N C H R O N I Z E R ASSEMBLY
26. C O U N T E R S H A F T GEAR T H R U S T WASHER (STEEL) (REAR)
27. C O U N T E R S H A F T GEAR T H R U S T WASHER
(STEEL B A C K E D BRONZE) (REAR)
28. C O U N T E R S H A F T GEAR B E A R I N G WASHER
29. C O U N T E R S H A F T GEAR B E A R I N G R O L L E R S (88)
30. C O U N T E R S H A F T GEAR B E A R I N G SPACER
3 1 . C O U N T E R S H A F T GEAR
32. C O U N T E R S H A F T GEAR T H R U S T WASHER (FRONT)
33. REVERSE S H I F T I N G A R M
34. REVERSE S H I F T I N G A R M SHOE
35. F I L L E R PLUG
36. D R A I N PLUG
37. LOCKWASHER
38. B O L T (TRANSMISSION-TO-CLUTCH HOUSING)
39. C-WASHER
4 0 . REVERSE IDLER GEAR SNAP RING
4 1 . REVERSE IDLER GEAR T H R U S T WASHER
4 2 . REVERSE IDLER S H A F T SLEEVE
43. REVERSE IDLER GEAR B E A R I N G ROLLERS (74)
4 4 . REVERSE IDLER GEAR B E A R I N G WASHER
45. REVERSE IDLER GEAR
46. LOCKWASHER (6)
47. A D A P T E R PLATE BOLTS (6)
48. D R I V E GEAR L O C K N U T
4 9 . WASHER
50. A D A P T E R PLATE
5 1 . COUNTERSHAFT-REVERSE IDLER S H A F T L O C K P L A T E
52. REVERSE IDLER GEAR S H A F T
53. C O U N T E R S H A F T
54. A D A P T E R PLATE G A S K E T
55. A D A P T E R PLATE S E A L
56. SPEEDOMETER GEAR SPACER
57. REAR B E A R I N G L O C A T I N G SNAP RING
58. REAR B E A R I N G
59. REVERSE S H I F T I N G A R M PIVOT PIN
60. REVERSE S H I F T I N G A R M PIVOT
6 1 . REVERSE S H I F T I N G A R M PIVOT O-RING
62. WASHER (6)
63. SIDE COVER B O L T (6)
64. SIDE COVER
65. TRANSMISSION CASE
66. M A I N S H A F T PILOT B E A R I N G ROLLERS (22)
67. C L U T C H S H A F T
68. FRONT B E A R I N G R E T A I N E R WASHER
69. FRONT B E A R I N G
70. FRONT B E A R I N G L O C A T I N G SNAP RING
7 1 . F R O N T B E A R I N G LOCK RING
72. FRONT B E A R I N G CAP G A S K E T
73. FRONT B E A R I N G CAP
74. FRONT B E A R I N G CAP BOLTS (4)
75. LOCKWASHER (4)
6 0 2 4 2