Major Repair To The Compressor - GMC 1990 Light Truck Repair Manual

1B4-8 HR-6 AIR CONDITIONING COMPRESSOR
Figure 18 — Installing the Clutch Coil Assembly

MAJOR REPAIR TO THE COMPRESSOR

Replacement of the shaft seal assembly (8, 9, 10) or the
pressure relief valve will require the discharge of the vehi­
cle's refrigerating system (figure 21). Other than clutch
repair procedures, the same holds true for any disassembly
of the compressor. To discharge the refrigerant, refer to the
vehicle service manual.
After servicing or repairing the compressor, always add
the proper amount of new 525 viscosity refrigerant oil.
Refer to " Specifications."
Keep the workbench and work area clean when servicing
the compressor, and use proper, clean service tools.
J-33026 6
6. Clutch Coil Assem bly
A. Drift Punch 3 mm (1 /s inch)
B. Stake in Front Head (3 Places)
Figure 19 — Staking the Clutch Coil Assembly
to the Coil Head
Figure 20 — Staking Locations on the Front Head
NOTICE: Any attempt to use makeshift or inade­
quate service tools or equipment may result in
damage and/or improper compressor operation.
All parts used for servicing the compressor internally are
protected by a preservative and packaged in a manner
which does not require cleaning, washing or flushing. The
parts can be used in the internal assembly just as they are
removed from the service package.
F-04523