Major Repair To The Compressor; Shaft Seal Replacement; Pressure Relief Valve R Eplacem En T - Chevrolet 1988 Light Duty Truck Repair Manual

1B3-8 R-4 AIR CONDITIONING COMPRESSOR

MAJOR REPAIR TO THE COMPRESSOR

Figure 17— Removing the Shaft Seal with J 23128-A

SHAFT SEAL REPLACEMENT

The shaft seal is designed to seep oil for lubrication.
Replace the seal if a large leak is detected. Use J 29547
to determ ine refrigerant oil leakage.
If the seal needs replacing, remove the accumulator.
Drain, measure and replace the refrigerant oil with new
525 viscosity refrigerant oil.
R em o ve or D isco nn ect (F ig u res 1 , 1 7 and 18)
Tools Required:
J 5403-A Internal Snap Ring Pliers
J 2 2 9 7 4 -A C o m p re s s o r
Protector
J 23128-A C eram ic Seal Remover and Installer
J 34614 Shaft Seal Protector
1. Clutch drive hub (3).
2. Retainer ring (11).
jgi
Clean
• The inside of the com pressor neck area.
3. Shaft seal (12).
• Engage J 23138-A into the recessed portion of
the seal by turning with a hand motion (figure
17).
• Lift the seal with a rotary-pulling motion.
4. Seal (o-ring) (13) with J 9553-01 (figure 18).
|-»<-| Install o r C o n n e c t (F ig u res 1 and 19)
Tool Required:
J 33011 " O " Ring Installer
1 . Seal (o-ring) (14) to the shaft (
• Dip the seal in clean 525 viscosity refrigerant
oil.
• Seal (o-ring) to J 33011.
• Insert J 33011 over the shaft and down until it
reaches the bottom of the shaft.
• Tower the slide on J 33011 to release the seal
(o-ring) into its groove.
J 23128-A
S h a ft O il S e a l
2 2 ) (figure 19).
• Rotate J 21508-A to seat the seal (o-ring).
2. Shift seal (12).
• Shaft seal to J 23128-A.
• J 23128-A and shaft seal to the shaft.
• Slide J 23128-A over and down the shaft until
it stops.
• Disengage J 23128-A from the shaft seal with
a reverse hand tw isting motion.
4. Retainer ring (11).
5. Clutch drive hub (3).
PRESSURE RELIEF VALVE
REPLACEMENT
R em ove or D isco nn ect (F ig u re 1)
1. Valve (24).
2. Seal (23).