Control Valve Replacement - GMC 1989 Light Duty Truck Repair Manual

CONTROL VALVE REPLACEMENT

4 -+ Remove or Disconnect (Figures 1 and 3)
Tools Required:
J 5403 Snap Ring Pliers
1. Retainer ring with J 5403.
2. O-ring seal (44).
3. Valve (5).
Install or Connect (Figures 1 and 3)
Tools Required:
J 5403 Snap Ring Pliers
1. Valve (5).
2. O-ring seal (44).
• Dip the seals into new clean 525 refrigerant oil.
3. Retainer (45) with J 5403.
MAJOR REPAIR TO THE COMPRESSOR
Replacement of the shaft seal assembly or the pressure
relief valve will require the discharge of the vehicle's refri­
gerating system. Other than clutch repair procedures, the
same holds true for any disassem bly of the compressor. To
discharge the refrigerant, refer to the vehicle service man­
ual.
After servicing, add fresh 525 viscosity refrigerant oil
equal to the amount drained from the compressor.
Keep the workbench and work area clean when servicing
the compressor, and use proper, clean service tools.
NOTICE: A ny a tte m p t to use m akesh ift o r in a d e ­
quate service tools o r e q u ip m e n t m ay res u lt in
dam age a n d /o r im p ro p e r co m p resso r o peratio n .
All parts used for servicing the com pressor 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 as they are
removed from the service package.
SHAFT SEAL REPLACEMENT
Remove or Disconnect (Figures 3, 20, 21, 22 and
23)
Tools Required:
J 5403 Snap Ring Pliers
J 9553-01 O-Ring Seal Remover
J 23128-A Seal Remover and Installer
J 34614 Shaft Seal Protector
Clutch plate and hub assem bly (22).
Shaft seal retainer ring using J 5403 (figure 22).
• Clean the com pressor neck area around the
shaft (38), the exposed part of the shaft seal (29)
and the O-ring seal groove.
V5 AIR CONDITIONING COMPRESSOR 1B2-9
A. Steel S hell
B. Lip Seal
3. Shaft lip seal using J 23128-A (figure 23).
4. O-ring seal using J 9553-01 (figure 24).
Figure 19— Clutch Coil Staking Locations
Figure 20— Compressor Shaft Seal
• Install J 34614 over the threaded end of the
shaft.
• Insert J 23128-A into the shaft lip seal, tighten
and remove lip seal.
Inspect
L»
Make sure the com pressor neck area is clean!
All parts. Replace as necessary.
Install or Connect (Figures 3, 20, 21, and 22)
Tools Required:
J 5403 Snap Ring Pliers
J 23128-A Seal Seat Remover and Installer
J 33011 O-Ring Seal Installer
J 34614 Shaft Seal Protector
B-06551