Jeep CJ/Scrambler 1971-1986 Repair Guide

Manual Transmission

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REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4 and 5

1971

CAUTION
The clutch driven disc contains asbestos, which has been determined to be a cancer causing agent. Never clean clutch surfaces with compressed air! Avoid inhaling any dust from any clutch surface! When cleaning clutch surfaces, use a commercially available brake cleaning fluid.

  1. Raise and support the vehicle on jackstands.
  2.  
  3. Drain the transmission and transfer case.
  4.  
  5. Remove the shift lever and shift housing.
  6.  
  7. Remove the set screw from the transfer case shift lever pivot pin. Remove the pivot pin, shift levers, and shift lever springs.
  8.  
  9. If the vehicle is equipped with a power take-off, remove the shift lever plate screws and lift out the lever.
  10.  
  11. Disconnect the front and rear driveshafts from the transfer case. If the vehicle is equipped with a power take-off, disconnect the transfer case end of the PTO driveshaft.
  12.  
  13. Disconnect the speedometer cable at the transfer case.
  14.  
  15. Disconnect the hand brake cable.
  16.  
  17. Disconnect the clutch cable at the bellcrank.
  18.  
  19. Place jacks under the transmission and engine. Protect the oil pan with a wood block.
  20.  
  21. Remove the nuts holding the rear mount to the crossmember.
  22.  
  23. Remove the transfer case-to-crossmember bolt.
  24.  
  25. Remove the frame center crossmember-to-frame side rail bolts and remove the crossmember. Remove the transmission-to-bell housing bolts.
  26.  
  27. Force the transmission to the right to disengage the clutch control lever tube ball joint.
  28.  
  29. Lower the engine and transmission. Slide the transmission and transfer case assemblies toward the rear until they clear the clutch.
  30.  
  31. Remove the six screws and lockwashers attaching the transfer case rear cover and remove the cover. If the vehicle is equipped with a power take-off, remove the PTO shift unit.
  32.  
  33. Remove the cotter pin, nut, and washer holding the transfer case main drive gear on the rear end of the transmission mainshaft. If possible, remove the main drive gear. If that's not possible, see step 19.
  34.  
  35. Remove the transmission-to-transfer case bolts.
  36.  
  37. Install a transmission mainshaft retaining plate tool #W-194 to prevent the mainshaft from pulling out of the case. If this tool is not available, loop a piece of wire around the mainshaft directly in back of the second speed gear. Install the shift housing right and left bolts part way into the case. Attach each end of the wire to the bolts. Support the transfer case, and with a soft mallet, tap lightly on the end of the mainshaft to loosen the gear and separate the two units.
  38.  
  39. Join the transfer case and transmission. Remove the wire or special holding tool. Remove the shift housing right and left bolts.
  40.  
  41. Install the transmission-to-transfer case bolts. Torque them to 35 ft. lbs.
  42.  
  43. Install the main drive gear. Install the cotter pin, nut, and washer holding the transfer case main drive gear on the rear end of the transmission mainshaft.
  44.  
  45. Install the transfer case rear cover and Install the cover. If the vehicle is equipped with a power take-off, Install the PTO shift unit.
  46.  
  47. Slide the transmission and transfer case assemblies forward until they engage the clutch.
  48.  
  49. Force the transmission to the right to engage the clutch control lever tube ball joint.
  50.  
  51. Install the transmission-to-bell housing bolts. Torque them to 30 ft. lbs.
  52.  
  53. Install the frame center crossmember. Torque the bolts to 50 ft. lbs.
  54.  
  55. Install the transfer case-to-crossmember bolt. Torque it to 45 ft. lbs.
  56.  
  57. Install the nuts holding the rear mount to the crossmember. Torque them to 40 ft. lbs.
  58.  
  59. Connect the clutch cable at the bellcrank.
  60.  
  61. Connect the hand brake cable.
  62.  
  63. Connect the speedometer cable at the transfer case.
  64.  
  65. Connect the front and rear driveshafts to the transfer case. If the vehicle is equipped with a power take-off, connect the transfer case end of the pto driveshaft.
  66.  
  67. If the vehicle is equipped with a power take-off, install the shift lever.
  68.  
  69. Install the set screw in the transfer case shift lever pivot pin. Install the pivot pin, shift levers, and shift lever springs.
  70.  
  71. Install the shift lever and shift housing.
  72.  
  73. Fill the transmission and transfer case.
  74.  



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Fig. Fig. 1: Shift lever removal for the T-18A and all 3-speed units starting in 1974



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Fig. Fig. 2: SR-4 transmission shift lever removal



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Fig. Fig. 3: T-176 transmission shift lever removal



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Fig. Fig. 4: T-14A transmission exploded view



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Fig. Fig. 5: T-14A transmission control lever assembly

1972-86

CAUTION
The clutch driven disc contains asbestos, which has been determined to be a cancer causing agent. Never clean clutch surfaces with compressed air! Avoid inhaling any dust from any clutch surface! When cleaning clutch surfaces, use a commercially available brake cleaning fluid.

  1. Remove all floor lever knobs, trim rings and boots.
  2.  
  3. Remove the floor pan section from above the transmission shift control and unbolt the lever assembly from the transmission (early 3-speed models). On the 4-speed models except SR-4 and T-176, and 3-speeds starting 1976, unscrew the shift control housing cap, remove the washer, spring, shift lever and pin. On SR-4 models, remove the shift lever housing bolts and remove the shift lever and housing assembly.
  4.  
  5. On T-18A, remove the transfer case shift lever and bracket assembly. On T-176 models, press and turn the lever retainer and remove the shift lever assembly.
  6.  
  7. Raise the vehicle.
  8.  
  9. Index mark the driveshafts for proper alignment at installation.
  10.  
  11. Remove the front driveshaft.
  12.  
  13. Disconnect the front end of the rear driveshaft from the transfer case.
  14.  
  15. Disconnect the clutch cable and remove the cable mounting bracket from the transfer case on 1972 models only.
  16.  
  17. Disconnect the speedometer cable, back-up light switch wires, transmission controlled spark advance, and parking brake cable if connected to the crossmember.
  18.  
  19. If equipped with a V8 engine, disconnect the exhaust pipe at the manifolds and lower them. Support the engine with a jack. Disconnect the support support crossmember from the frame side rail.
  20.  
  21. Remove the bolts that attach the transmission to the clutch housing.
  22.  
  23. Lower the transmission slightly.
  24.  
  25. Move the transmission and transfer case assembly and crossmember backward far enough for the transmission clutch shaft to clear the clutch housing.
  26.  
  27. Remove the assembly from under the vehicle.
  28.  
  29. If the transmission and transfer case were separated, join them and torque the bolts to 30 ft. lbs.
  30.  
  31. Position the wave washer and the throwout bearing and sleeve assembly in the throwout fork. Center the bearing over the pressure plate release levers.
  32.  
  33. Protect the splines and throwout bearing alignment and slowly slide the transmission into position. Some maneuvering may be necessary in order to match the transmission input shaft splines and the clutch driven plate splines.
  34.  
  35. Install the bolts that attach the transmission to the clutch housing. Torque them to 54 ft. lbs.
  36.  
  37. If equipped with a V8 engine, Connect the exhaust pipe at the manifolds and lower them. Support the engine with a jack. Connect the support crossmember to the frame side rail. Torque the bolts to 30 ft. lbs.
  38.  
  39. Connect the speedometer cable, back-up light switch wires, transmission controlled spark advance, and parking brake cable if connected to the crossmember.
  40.  
  41. Install the clutch cable mounting bracket on the transfer case on 1972 models only. Connect the clutch cable.
  42.  
  43. Connect the front end of the rear driveshaft to the transfer case.
  44.  
  45. Install the front driveshaft.
  46.  
  47. Lower the vehicle.
  48.  
  49. On T-18A, install the transfer case shift lever and bracket assembly. On T-176 models, press and turn the lever retainer and install the shift lever assembly.
  50.  
  51. Install the floor pan section from above the transmission shift control and install the shift lever assembly from the transmission (early 3-speed models). On the 4-speed models exc. SR-4 and T-176, and 3-speeds starting 1976, unscrew the shift control housing cap, install the washer, spring, shift lever and pin. On SR-4 models, install the shift lever housing bolts and install the shift lever and housing assembly.
  52.  
  53. Install all floor lever knobs, trim rings and boots.
  54.  

 
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