Pontiac Fiero 1988 Service Manual page 93

10 HR-6 AIR C O N D I T I O N I N G C O M P R E S S O R
|4--»| Remove or Disconnect
1.
Discharge the refrigerant
system.
2.
Loosen
and reposition compressor in mounting
brackets, if
necessary.
3- Remove clutch plate and hub assembly from
compressor as described in minor repairs.
4. Remove the shaft seal retainer ring, using snap ring
pliers J-5403 (Fig. 24).
5. Thoroughly clean inside of compressor neck area
surrounding the shaft, the exposed portion of the seal,
the retainer ring groove and the shaft itself. Any dirt or
foreign material getting into compressor may cause
damage.
6. Fully engage the knurled tangs of Seal Remover-
Installer J-23128-A into the recessed portion of the
Seal by turning the handle clockwise. Remove the Seal
from the compressor
with
a rotary-pulling motion
( Fig. 25). Discard the seal. The handle must be hand-
tightened securely. Do not use a wrench or pliers.
7. Remove and discard the seal seat O-ring from the
compressor neck using O-ring remover J-9553 0 1 ,
Figure 26.
8. Recheck the shaft and inside of the compressor neck
for dirt or foreign material and be sure these areas are
perfectly clean before installing new parts.
Clean
• Thoroughly clean seal O-ring
groove
in front head.
I ? I Important
Seals should not be re-used. Always use a new
specification service seal on rebuild ( Fig. 22).
Be sure that
the seal to be installed is not scratched or damaged in any
way. Make sure that the seal seat and seal are free of lint and
dirt that could damage the seal surface or prevent sealing.
+4- Install or Connect
Dip the new seal seat O-ring in clean 525 viscosity 7
refrigerant oil and assemble onto O-ring installer
J-33011, Figure 26.
Insert the O-ring installer J-33011 into the compressor
neck until the installer "bottoms 1 '. Lower the
moveable slide of the O-ring installer to release the
O-ring into the seal O-ring lower groove. (The
compressor neck top
groove
is for the shaft seal
retainer ring.) Rotate the installer to seat the O-ring
and remove the installer.
Dip the new seal in clean 525 viscosity refrigerant oil
and assemble seal to Seal Installer J-23 128-A, by
turning handle clockwise. The stamped steel case side
of the lip seal must be engaged w i t h knurled tangs of
installer so that flared-out side of lip seal is facing and
installed towards the compressor. Install seal
protector J-34614, in the seal lip and place over the
compressor shaft. Figure 26, and push the seal in place
w i t h a rotary motion or place the seal protector
J-34614 over end of compressor shaft, Figure 25, and
slide the new seal onto the shaft w i t h a rotary motion
until it stops. Take care not to dislodge the O-ring. Be
sure the seal makes good contact w i t h the O-ring.
GO
j
-
54
°
3
SNAP RING
PLIERS
SEAL SEAT
RETAINER
RING
Fig. 24 Removing or Installing Shaft Seal
Retaining Ring
Disengage the installer from the seal and remove the
installer J-23128-A and the seal protector J-34614.
N O T I C E : H A N D L I N G A N D CARE OF SEAL
PROTECTOR IS I M P O R T A N T . IF SEAL PRO-
T E C T O R IS NICKED OR THE B O T T O M FLARED,
T H E NEW SEAL MAY BE D A M A G E D D U R I N G
I N S T A L L A T I O N .
Install the new seal retainer ring w i t h its flat side
against the Seal, using Snap-Ring Pliers J-5403. See
Figure 24. Use the
sleeve
from O-ring installer J-33011
to press in on the seal retainer ring so that it snaps into
its groove.
To leak test, install compressor leak test fixture
J-9625-A on rear head of compressor and connect gage
charging lines. Pressurize suction and high-side of
compressor
with
Refrigerant 12 vapor to drum
pressure. Temporarily install the shaft nut and, w i t h
the compressor in horizontal position, rotate the
compressor shaft in
normal direction of rotation
several turns by
hand.
Leak test the seal area and
correct any leak found. Remove shaft nut.
Remove any excess oil resulting from installing the
new seal parts from the shaft and inside the
compressor neck.
Install the clutch plate and hub assembly as described
in minor repair procedures.
Reinstall compressor, belt and tighten bracket.
Evacuate
and charge the refrigerant system.