Major Repair To The Compressor; Shaft Seal Replacement - GMC 1990 Light Truck Repair Manual

Retaining Ring
13. Seal
15. Seal (O-ring)
Figure 14— Removing/Installing the Shaft Seal Seat
and Seal
4. Pulley and bearing assembly (5 and 6).
5. Clutch plate and hub assembly (2).
MAJOR REPAIR TO THE
COMPRESSOR
Service repair procedures to the compressor shaft
seal and pressure relief valve or disassembly of the
internal compressor mechanism are considered " Ma­
A-6 AIR CONDITIONING COMPRESSOR
Figure 15— Removing/Installing the Shaft Seal and
jo r" since the refrigeration system must be purged of
refrigerant before proceeding.
If servicing or replacing the internal cylinder and
shaft assembly chain, measure and replace the oil with
new 525 viscosity refrigerant oil.
Disassemble the compressor in a clean work area.
Use clean tools. Disassembly procedures require prop­
er service tools. Using inadequate equipment may
damage the compressor.
Replacement parts are packaged and can be used
without cleaning.
Piston shoe discs and shaft thrust races are " num­
bered." To determine size and dimension, refer to the
chart in this section.

SHAFT SEAL REPLACEMENT

F1581
+ + Remove or Disconnect (Figures 1, 13, 14 and
15)
Tools Required:
J 5403 Snap Ring Pliers
J 9392-01 Shaft Seal Remover and Installer
J 9553 Seal Remover
J 22974-A Compressor Shaft Oil Seal Protector
J 23128-A Compressor Shaft Seal Seat Remover
and Installer
1. Clutch plate and hub assembly(2).
1B1-7
J 21508
F1582
Seal