R-4 Compressor Shaft Seal Replacement (On Car) - Pontiac TRANS AM 1977 Service Manual

1 B-62 1977 PONTIAC SERVICE MANUAL
R-4 COMPRESSOR SHAFT SEAL
REPLACEMENT (ON CAR)
Remove
1. "Discharge the Refrigerant System" according to the
"DISCHARGING, EVACUATING AND CHARGING
PROCEDURES FOR C.C.O.T. A/C SYSTEM".
2. Loosen and reposition compressor in mounting
brackets.
3. Remove clutch driven plate from compressor as
described in "R-4 Compressor Clutch Plate & Hub Asm."
Removal procedure.
4. Remove the shaft seal seat retainer using Snap Ring
Pliers, J 5403 (#21).
5. Thoroughly clean inside of the compressor neck area
surrounding the compressor shaft, seal seat and shaft, to
remove all dirt and foreign material before removing the seal
seat.
6. Insert Seal Seat Remover and Installer Tool J 23128
(Fig. 1B-l13), over the shaft into the recessed area of the seal
seat to tighten tool clockwise to securely engage the knurled
tangs of the J 23 128 Tool with the seat. Remove the seal seat
with a twisting and pull motion. Discard the seat.
7. Insert the Seal Remover and Installer, J 9392 (Fig.
1B-114), over the shaft and engage the shaft seal by pressing
downward on the tool to overcome the shaft seal spring
pressure and turn the tool clockwise to engage the seal
assembly tabs with the tangs of the J 9392 Tool. Remove the
seal assembly by pulling straight out from the compressor
shaft. Discard the seal.
8. Remove the seal seat O-ring from the compressor neck
using Tool J 9553 (Fig. 1B-115). Discard the O-ring.
Fig. 1 B-1 14.Removing 1 9 7 7 R-4 Seal (On Car)
Fig. 18- 1 1 5 Removing 1 9 7 7 R-4 0-Ring (On Car)
Fig. 18-1 1 3 Removing 1977 R-4 Ceramic Seal Seat (On
Car)
3. Dip the new shaft seal O-ring and seal face in clean
Replace
(See Fig. 1B-44 "Specificatio~ Seal Kit").
1. Dip the new seal seat O-ring in clean 525 viscosity oil
and assembly onto O-ring Installer J 21508 as shown in Fig.
1B-116.
2. Insert the O-ring Installer J 21 508 into the compressor
neck until the tool "bottoms". Lower the movable slide of the
O-ring installer to release the O-ring into the seal seat O-ring
groove. Rotate the installer tool to seat the O-ring and remove
the tool.
525 viscosity oil and carefully engage-the shaft seal assembly
with the locking tangs of Tool J 9392 Seal Remover and
Installer as shown in Fig. 1B-117.
4. Install the Shaft Seal Protector J 22974 over the end
of the compressor shaft and slide the shaft seal onto the
compressor shaft. Slowly turn the tool clockwise while
applying light pressure until the seal engages the flats of the
compressor shaft and can be seated into place. Rotate the J
9392 Tool counterclockwise to disengage the tool from the
seal tabs and remove the tool.