Major Repair To The Compressor; Shaft Seal Replacement - Chevrolet 1988 Light Duty Truck Repair Manual

1B2-8 DA-6 AIR CONDITIONING COMPRESSOR
J 33026 C om pressor Holding Fixture
1. C om pressor assem bly on J 33026.
2. C lutch coil assembly (6) onto the front head (11) with
the term inals positioned at the " m arked" location.
• J 33024 over the internal opening of the clutch
coil assembly (6).
• J 8433-1 w ith th ro u g h ^olts, w ashers and
forcing screw over J 33024.
• Thread through bolts into J 33026 to full fixture
thickness (figure 17).
• Be sure J 8433-1 and the clutch coil assembly
(6) stay " in line" during installation.
• When the clutch coil assem bly (6) is seated on
the front head (11), use a 3 mm (Vs-inch)
diameter drift punch to stake the head (11) at 3
places, 120 degrees apart to assure the clutch
coil assembly (6) rem ains in position (figure
18).
— Stake size should be one half the area of
th e p u n c h
(0.010-0.015-inch) deep (figure 19).
3. Pulley (5).
4. Clutch plate and hub assembly (2).

MAJOR REPAIR TO THE COMPRESSOR

A. Steel Shell
B. Lip Seal
Figure 2 0 — Com pressor Shaft Seal
Replacement of the shaft seal assem bly or the pressure
relief valve will require the discharge of the vehicle's refri­
gerating system (figure 20). O ther than clutch repair pro­
cedures, the same holds true for any disassem bly of the
compressor. To discharge the refrigerant, refer to the vehi­
cle service manual.
A fter 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 servic­
ing the compressor, and use proper, clean service tools.
NOTICE: A n y a tte m p t to use m a k e s h ift o r in a d e ­
q u a te se rvice to o ls o r e q u ip m e n t m ay re s u lt in
d am age a n d /o r im p ro p e r c o m p re s s o r o p e ra tio n .
All parts used for servicing the com pressor internally
are protected by a preservative and packaged in a man­
tip a nd 0 .2 8 -0 .3 5 mm
B-06551
A. Stake Front Head 0.28-0.35 mm
(.010-.015 Inch)
B. F ront Head Surface
Figure 19— Staking Locations on the Front Head
ner w hich 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.

SHAFT SEAL REPLACEMENT

♦ ---R em ove or D isco n n ect (F ig u re s 3, 21, 22 and
----- 23)
Tools Required:
J 5403 Snap Ring Pliers
J 34614 Shaft Seal Protector
J 23128-A Seal Remover and Installer
J 9553-01 O-Ring Seal Remover.
1. Clutch plate and hub assem bly (2).
• Install J 34614 over the threaded end of the
shaft (20).
2. Shaft seal retainer ring using J 5403 (figure 21).
• Clean the com pressor neck area around the
shaft (20), the exposed part of the shaft seal
(8) and the O-ring seal groove.
3. Shaft lip seal using J 23128-A (figure 22).
• Insert J 23128-A into the shaft lip seal, tighten
and remove lip seal.
4. O-Ring seal using J 9553-01 (figure 23).
Inspect
• Make sure the com pressor neck area is clean.
• All parts. Replace as necessary.
♦« -
Install or C on n ect (F ig u re s 3 and 24)
Tools Required:
J 33011 O-Ring Seal Installer
J 23128-A Seal Seat Remover and Installer.
J 34614 Shaft Seal Protector
B-06552