Shaft Seal Replacement; High Pressure Relief Valve Replacement - GMC 1990 Light Truck Repair Manual

A. Steel Shell
B. Lip Seal
Figure 21 — Compressor Shaft Seal

SHAFT SEAL REPLACEMENT

Remove or Disconnect (Figures 4, 22, 23 and 24)
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 assembly (2).
.
• Install J 34614 over the threaded end of the
shaft (20).
Shaft seal retainer ring (8) using J 5403 (figure 22).
2
.
• Clean the compressor neck area around the
shaft (20), the exposed part of the shaft seal (9)
and the O-ring seal groove.
Shaft lip seal (9) using J 23128-A (figure 23).
3.
• Insert J 23128-A into the shaft lip seal, tighten
and remove lip seal.
4. O-ring seal (10) using J 9553-01 (figure 24).
Inspect
I *
Make sure the compressor neck area is clean.
All parts. Replace as necessary.
Install or Connect (Figures 4 and 25)
Tools Required:
J 33011 O-Ring Seal Installer
J 23128-A Seal Seat Remover and Installer
J 34614 Shaft Seal Protector
J 5403 Snap Ring Pliers
Dip the new O-ring seal in clean 525 viscosity refriger­
ant oil.
J 34614 onto the shaft (20).
O-ring seal using J 33011 (figure 25).
• Insert J 33011 into the compressor neck until
the installer " bottoms."
• Lower the movable slide of J 33011, releasing
the O-ring seal into the lower groove.
• Rotate J 33011 to seat the O-ring seal and
remove J 33011.
Shaft lip seal using J 23128-A (figure 23).
Dip the shaft lip seal in clean 525 viscosity refrigerant
oil and install shaft lip seal on J 23128-A.
Bottom the shaft lip seal into the compressor neck
area using J 23128-A.
HR-6 AIR CONDITIONING COMPRESSOR 1B4-9
B-06551
8. Seal Seat
Retainer Ring
Figure 22 — Removing or Installing the Shaft
Lip Seal Retaining Ring
• Release and remove J 23128-A.
3. Shaft seal retainer ring using J 5403 (figure 22).
• Install flat side of shaft seal retainer ring against
the lip seal.
• Remove J 34614.
9
Important
• Leak test the compressor.
• Refer to " Leak Testing" .
131
Clean
• Shaft (20) and inside the compressor neck area.
4. Clutch plate and hub assembly (2).
HIGH PRESSURE RELIEF
VALVE REPLACEMENT
Remove or Disconnect (Figures 4 and 26)
• Be sure the compressor has no charge.
1. High pressure relief valve (32).
2. O-ring seal (33).
Install or Connect (Figures 4 and 26)
• Lubricate the threads of the high pressure relief valve
(32) and new seal with 525 viscosity refrigerant oil.
1. High pressure relief valve (32) with new seal.
Tighten
High pressure relief valve (32) to 9 Nm (84 in.
lbs.).
Important
Leak test the compressor.
Refer to " Leak Testing."
F-06509