Transmission Replacement

REMOVAL PROCEDURE

- Tools Required
- J36221 Quick Connect Disengagement Tool

1. Shift the transmission into 3RD or 4TH speed gear.
2. Remove the shift lever and boot. Refer to Shift Lever.
3. Raise the vehicle.
4. Drain the transmission oil. Refer to Fluid Replacement (NV3500) or Fluid Replacement (NV4500).
5. Remove the propeller shaft. Refer to one of the following procedures in Propeller Shaft.
- Propeller Shaft Replacement (Front Axle-All Except NP8)
- Propeller Shaft Replacement (Front Axle-NP8)
- Propeller Shaft Replacement (System Balanced Assembly)

6. Remove the transfer case if the vehicle is equipped with four wheel drive. Refer to one of the following procedures in Transfer Case.
- Transfer Case Replacement (Selectable Four Wheel Drive)
- Transfer Case Replacement (Auto Four Wheel Drive )
- Transfer Case Replacement (Manual Four Wheel Drive)





7. Disconnect the wiring harness connector from the vehicle speed sensor.





8. Disconnect the wiring harness connector from the backup lamp switch.
9. Disconnect the wiring harness retainers from the transmission.





10. Use the J36221. Depress the white plastic sleeve on the quick connect in order to separate the hydraulic clutch line from the concentric slave cylinder quick connect.





11. Remove the clutch housing cover.
12. Remove the transmission rear mount.
13. Support the transmission. Use a suitable safety stand.
14. Remove the frame crossmember. Refer to Rear Bumper Brace Replacement in Frame and Bumpers.





15. Remove the transmission to the clutch housing bolts and studs.
16. Pull the transmission straight back on the clutch hub splines. Do not let the transmission hang from the clutch plate and the clutch cover.
17. Remove the transmission from the vehicle.

INSTALLATION PROCEDURE

IMPORTANT:
- Do not force the transmission into the clutch.
- Do not let the transmission hang from the clutch.
- Leave the safety stand under the transmission for support.

1. Install the transmission:
1.1. Put a thin coat of high-temperature grease on the main drive gear splines.
1.2. Shift the transmission into 3RD or 4TH speed gear.
1.3. Rotate the transmission clockwise onto the clutch hub splines.
1.4. Install the bolts and the studs securing the transmission to the engine.
^ Tighten the bolts to 47 Nm (35 ft. lbs.).

NOTICE: Refer to Fastener Notice in Service Precautions.

2. Install the frame crossmember. Refer to Rear Bumper Brace Replacement in Frame and Bumpers.





3. Install the transmission rear mount.
4. Remove the safety stand from beneath the transmission.





5. Install the hydraulic clutch line to the concentric slave cylinder quick connect.
6. Install the wiring harness retainers to the transmission.





7. Install the electrical connector to the backup lamp switch.





8. Install the electrical connector to the vehicle speed sensor.
9. Install the transfer case if removed. Refer to one of the following procedures in Transfer Case:
- Transfer Case Replacement (Selectable Four Wheel Drive)
- Transfer Case Replacement (Auto Four Wheel Drive )
- Transfer Case Replacement (Manual Four Wheel Drive)

10. Install the propeller shaft. Refer to one of the following procedures in Propeller Shaft.
- Propeller Shaft Replacement (Front Axle-All Except NP8)
- Propeller Shaft Replacement (Front Axle-NP8)
- Propeller Shaft Replacement (System Balanced Assembly)

11. Install the parking brake and controls, if removed. Refer to Parking Brake Replacement in Parking Brake.
12. Fill the transmission with new oil. Refer to Fluid Replacement (NV3500) or Fluid Replacement (NV4500).
13. Remove the safety stands.
14. Lower the vehicle.
15. Install the shift lever and the boot. Refer to Shift Lever.