GMC 1990 Light Truck Repair Manual page 28

1B1-8 A-6 AIR CONDITIONING COMPRESSOR
Straight Edge
0.793 mm (0.0313")
Wire Gage
0.66 mm (0.026") Should
1.91 mm (0.075") Should
or Should "Just Go"
10
.
Retainer
11
.
Sleeve
12. Retainer
13. Seat
14.
Seal
15. Seal (O-ring)
16
Figure — Shaft and Seal Position and correct
Position Gaging Guide
P y | Clean
• The inside of the compressor around the shaft
(38). Prevent dust and dirt from entering the
compressor.
2. Sleeve retainer (10).
3. Absorbent felt sleeve (11).
4. Shaft seat retaining ring (12) with J 5403 (figure
13).
5. Shaft seat (13) (figure 14).
• Engage J 23128 into the recessed portion of
the seat by turning J 23128 to the right (clock­
wise).
• Lift the seat (13) from the compressor with a
rotary motion.
6. Shaft seal (14) (figure 15).
• Place J 22974-A over the end of the shaft (38)
to prevent cutting the O-ring (13).
• Insert J 9392-01 over the compressor shaft
(39).
• Engage the tabs on the seal (14) by twisting
the J9392-01 to the right.
•GO"
Not Go"
F1583
• Engage the tabs and lift the seal (14) out of the
shaft (39) cavity. Hold J 22974 in place while
removing the seal.
7. O-ring (15) with J 9553-01.
Install or Connect (Figures 1, 13 through 16)
E
Tools Required:
J 5403 Snap Ring Pliers
J 9392-01 Shaft Seal Remover and Installer
J 9393-A Seal Seat Remover and Installer
J 9366 Compressor Shaft Nut Socket
J 9625-A Pressure Test Set with Schrader Valves
J 22974-A Shaft Seal Protector
J 23128-A Ceramic Seal Remover and Installer
J 24340 Retainer Ring Pliers
J 33011 Seal Remover
1. O-ring (15) with J 33011 (figure 15).
• Dip the seal (15) into clean 525 viscosity refrig­
erant oil.
• Insert J 33011 down into the compressor neck
until the tool " bottoms."
• Lower the movable slide of J 33011 into the
lower groove.
• Rotate J 33011 to seat the seal (15).
• Remove J 33011.
2. Seal seat (14) (figure 15).
• Coat the seal (14) with clean 525 viscosity
refrigerant oil.
• Mount the seal (14) to J 9392-01 by engaging
the tabs of the seal with the tangs of J 9392-
01.
• Place J 22974 over the end of the compressor
shaft (39).
• Slide the seal (14) and J 22974 down onto the
compressor shaft (38).
• Twist J 9392-01 to the right (clockwise) while
pushing the seal assembly down the shaft (38)
until the seal assembly (14) engages the flats
on the shaft and seat in place.
• Disengage J 9392-01 by pressing downward
and twisting to the left (counterclockwise).
3. Ceramic seal seat (13) (figure 14).
• Seal (13) to J 23128.
• Dip the seal (13) into clean 525 viscosity refrig­
erant oil.
• Install J 23128 and the seal (13) over the com­
pressor shaft (39).
• Push the seal (13) into place with a rotary
motion.
Important
• Do not dislodge the seal (O-ring) (15).
4. Seal shaft retainer ring (12) with J 5403 (figure
13).
• Place the flat side against the seal seat.
• Use the sleeve of J 23128-A to press the ring
into its groove.
5. J 9625 to the rear head of the compressor:
• Gage charging lines or pressurize the suction
side (low pressure side) of the compressor with
refrigerant to equalize the pressure to the
drum pressure.