Allison - Automatic Transmission

Park/Neutral Position Switch Adjustment

^ Tools Required
- J 43164-A PNP Switch Adjusting Tool

Caution: Refer to Battery Disconnect Caution in Service Precautions.





1. Disconnect the external wiring harness from the PNP switch (5).
2. Disconnect the shift linkage/cable from the shift lever at the transmission.
3. Use a wrench (1) to keep the shift lever (2) from rotating. Remove the nut (3) from the end of the selector shaft (4). Carefully remove the shift lever (2) from the selector shaft (4).
4. Loosen the two bolts (6) so that the PNP switch may be rotated with some effort.
5. Put the selector shaft in the N (Neutral) position as follows:
5.1. Place a wrench on the selector shaft flats and rotate the shaft to its furthest clockwise position.
5.2. Rotate the selector shaft counter-clockwise two detents.





6. Position J 43164-A over the selector shaft (3) so the two tabs on the tool engage the two slots in the PNP switch (2) just outside the selector shaft, Rotate the PNP switch (2) until the single tab (1) at the other end of the tool engages the single slot at the top of the PNP switch.

Notice: Refer to Fastener Notice in Service Precautions.

7. Hold the special tool in engagement with the PNP switch to maintain alignment of the PNP switch with the selector shaft.
^ Tighten the two bolts (4) to 27 Nm (20 ft. lbs.).





Notice:
^ DO NOT drive the selector lever onto the selector shaft.
^ DO NOT use an impact wrench in order to tighten the selector lever nut. Hold the lever with a wrench while tightening the nut.
^ Failure to follow these instructions may result in transmission damage.

8. Reinstall shift lever (2). Install nut (3), by hand, on the end of selector shaft (4). Use a wrench (1) to keep the shift lever from rotating.
^ Tighten nut (3) to 24 Nm (18 ft. lbs.).
9. Reconnect the shift selector linkage/cable to the shift lever (2).
10. Connect the external wiring harness connector to the PNP switch.