High Side High Pressure Cutoff Switch; Pressure Relief Valve; Assembly Of Drive Components; Shaft Seal - GMC 1989 Light Duty Truck Repair Manual

1B3-10 R-4 AIR CONDITIONING COMPRESSOR
8. O-ring into the groove of the front head (figure 18).
9. Front head aligning the marks made at disassembly.
10. Front head mounting screws (figure 17).
Tighten
&
Screws to 27 N m (20 ft. lbs.)
HIGH SIDE HIGH PRESSURE
CUTOFF SWITCH
+ 4 - Install or Connect (Figure 4)
Tool Required:
J 5403 Snap Ring Ptiers
1. New O-ring coated with 525 refrigerant oil.
2. Refrigerant oil in the switch cavity.

ASSEMBLY OF DRIVE COMPONENTS

SHAFT SEAL

Install or C onnect (Figures 15 and 27)
Tools Required:
J 5403 Snap Ring Pliers
J 23128-A Seal Installer
J 33011 O-ring Installer
J 34614 Seal Protector
1. New O-ring seal, dipped in 525 refrigerant oil, onto
J 33011 (figure 27).
2. O-ring completely down on the shaft until it bottoms.
Important
The seal seat and the seal lip must be free of lint or
dirt.
Lip seal to J 23128-A.
3.
• The printed/stam ped side of the seal must be
engaged with the knurled tangs of J 23128-A so
that the flared out side of the seal is facing the
compressor.
Figure 26— Replacing the Thrust and Belleville
Washers
3. Switch in the cavity.
4. Retaining ring using J 5403.
• The high point of the curved sides must be next
to the switch housing.
• The retaining ring must be seated in the ring
groove.

PRESSURE RELIEF VALVE

Install or Connect (Figure 4)
1. New O-ring coated with 525 refrigerant oil.
2. Valve.
NOTICE: H and lin g the care o f s eal p ro te c to r is
im portant. If the seal p ro te c to r is n ic k e d o r the
b otto m flared, the n e w seal m ay be d a m a g e d d u r­
ing installation.
4. J 34614 on the shaft (figure 15).
5. Lip seal (figure 15). Disengage installer by turning it
counter-clockwise.
6. Retainer ring, flat side against the seal seat using
J 5403. Use J 33011 to seat the retainer in its groove.
CLUTCH COIL AND/OR
PULLEY RIM
V-GROOVE DRIVE
Install or Connect (Figures 28 and 29)
+ « -
Tools Required:
J 26271-A Rotor and Bearing Installer
J 29886 Driver Handle