gmc Workshop Repair Guides

GMC Syclone 43L Turbo Workshop & Auto Repair Manuals

Sensors and Switches - Instrument Panel > < High-Side High-Pressure & High-Side Low-Pressure Cutoff Switch|Page 456
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Refrigerant Pressure Sensor / Switch: Service and Repair
High-Side-High Pressure Cut Off Switch

R-4 COMPRESSOR

Compressor Component View

Remove or Disconnect

Tools Required:

J 5403 Internal Snap Ring Pliers
J 9553-01 O-Ring Remover

1. Electrical connector at switch.
2. Switch retaining ring using J 5403.
3. Switch from compressor by pulling on terminal housing.
4. Old O-ring seal from the switch cavity using J 9553-01.

-

If the high pressure cut-off switch is reinstalled in the compressor, a new O-ring seal must be used and preferably a new retainer ring should
also be used.

Inspect
-

Switch cavity and O-ring groove in the rear head for dirt or foreign material and clean as necessary.

Install or Connect

Tool Required:

J 5403 Internal Snap Ring Pliers

1. New O-ring seal coated with 525 refrigerant oil. Lubricate the high pressure cut-off switch housing with clean 525 refrigerant oil.
2. Switch into switch cavity until switch bottoms in cavity.
3. Switch retaining ring using J 5403.
4. Electrical connector into the switch.

Sensors and Switches - Instrument Panel > < High-Side High-Pressure & High-Side Low-Pressure Cutoff Switch|Page 456