Allison

Pressure Switch Manifold Replacement
Removal Procedure





Important: Individual pressure switches cannot be replaced. When any pressure switch needs replacing, the entire assembly must be replaced.

Important: The G solenoid has been removed for clarity.

1. Remove the oil pan and suction filter.

2. Remove the two bolts (2). Remove the reverse signal tube (1).





Caution: Refer to Battery Disconnect Caution in Service Precautions.

3. Disconnect the internal wiring harness connector from the pressure switch assembly (2).
4. Remove five bolts (1). Remove the pressure switch assembly (2).

Installation Procedure





Notice: Refer to Fastener Notice in Service Precautions.

1. Place the new pressure switch manifold assembly (2) in position and install one bolt (1) in a recessed location to hold it into position. Start the remaining four bolts (1) in recessed locations and tighten the bolts by hand.
^ Torque the bolts to 12 Nm (108 lb in).
2. Connect the internal wiring harness connector to the pressure switch assembly.





3. Install the reverse signal tube (1). Install two bolts (2).
^ Tighten the bolts to 12 Nm (108 lb in).
4. Install the oil pan and suction filter.