Shift Modulator: Service and Repair

REMOVE OR DISCONNECT
^ Tool Required:
- J 23100 Vacuum Modulator Wrench

1. Raise and suitably support vehicle.





2. Vacuum hose and pipe from vacuum modulator.





3. Vacuum modulator and plunger from transmission using J 23100.

Inspect
^ Tool Required:
- J 23738-A Hand Operated Vacuum Pump

1. Vacuum modulator for leakage by removing the vacuum modulator plunger from the vacuum modulator and observing any transmission fluid that drains out of the vacuum modulator. If transmission fluid is present in the vacuum modulator, replace the vacuum modulator.
2. Vacuum modulator for leakage using J 23738-A. Attach the J 23738-A to the vacuum fitting on the rear of the vacuum modulator. Apply 67 kPa (20 in. Hg) of vacuum to the vacuum modulator and observe the gage at the top of the J 23738-A. If the J 23738-A indicates a vacuum loss, replace the vacuum modulator.
3. Vacuum modulator O-ring for cuts or other damage. Replace as necessary.

INSTALL OR CONNECT
^ Tools Required:
- J 36850 Transjel(R) Transmission Assembly Lubricant
- J 23100 Vacuum Modulator Wrench

1. Apply J 36850 to the vacuum modulator O-ring.
2. Vacuum modulator and modulator plunger into transmission using a J 23100.
- Tighten vacuum modulator to 52 Nm (38 ft. lbs.).
3. Vacuum hose and pipe to vacuum modulator.
4. Lower vehicle.