Refrigerant Pressure Sensor / Switch: Service and Repair

Compressor Control Switches Replacement (HT6/HD6)

REMOVAL PROCEDURE

TOOLS REQUIRED
^ J 39500-B R-134a A/C Refrigerant Recovery, Recycling and Recharging System (ACR4)
^ J 5403 Snap Ring Pliers
^ J 9553-01 O-ring Remover

1. Recover the refrigerant using the J 39500-B.
2. Disconnect the electrical connector from the switch (4) in the rear head of the compressor.
3. Remove the switch retaining ring using the J 5403.
4. Remove the switch (4) from the compressor.
5. Remove the old O-ring seal from the switch cavity using the J 9553-01.
6. Inspect the switch cavity and the O-ring groove in the rear head for dirt or foreign material. Clean the components as necessary.

INSTALLATION PROCEDURE

TOOLS REQUIRED
J 5403 Snap Ring Pliers

IMPORTANT: If you reinstall an existing control switch in the compressor use a new O-ring and a new retainer ring. An O-ring and a retainer ring is included in a new switch kit.

1. Lubricate the new O-ring using clean refrigerant oil.
2. Install the new O-ring into the groove in the switch cavity.
3. Lubricate the control switch housing using clean refrigerant oil.
4. Install the switch (4) into the switch cavity until the switch bottoms in the cavity.
5. Using the J 5403 install the switch retaining ring. Ensure that the high point of the curved sides is adjacent to the switch housing. Ensure that the retaining ring is properly seated in the switch cavity retaining groove.
6. Leak test according to bench test procedure.