GMC T Series 1994 Repair Manual page 48

Q ] SEAL [ U J 9553-01
( U J 23128-A 0 O-RING
Remove or Disconnect
1. Recover the refrigerant using J 39500-G M .
2. Loosen and reposition com pressor in m ounting brackets,
if necessary.
3. Remove clutch plate and hub assem bly from com pressor
as described in m inor repairs.
4. Remove the shaft seal retainer ring, using snap ring
pliers J 5403 (Fig. 21).
5. Thoroughly clean inside o f com pressor neck area
surrounding the shaft, the exposed portion o f the seal, the
retainer ring groove and the shaft itself. Any dirt or
foreign material getting into com pressor may cause
damage.
6. Fully engage the knurled tangs of Seal Rem over-
Installer J 2312 8-A into the recessed portion of the Seal
by turning the handle clockw ise. Rem ove the Seal from
the com pressor with a rotary-pulling m otion (Fig. 22).
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
com pressor neck using O -ring rem over J 9553-01,
Figure 20.
8. Recheck the shaft and inside of the com pressor neck for
dirt or foreign m aterial and be sure these areas are
perfectly clean before installing new parts.
new specification service seal on rebuild (Fig. 18). Be
sure that the seal to be installed is not scratched or
dam aged in anyway. Make sure that the seal seat and seal
are free of lint and dirt that could dam age the seal surface
or prevent sealing.
El
1.
refrigerant oil and assem ble onto O -ring installer
J 33011, Figure 20.
2.
groove is for the shaft seal retainer ring.) Rotate the
3.
assem ble seal to Seal Installer J 2 31 2 8-A , by turning
(TJ J 33011
[ | ] J 34614
J 34614, in the seal lip and place over the com pressor
Clean
• Thoroughly clean O -ring seal groove in front head.
NOTICE:
Seals should not be re-used. A lw ays use a
Install or Connect
Dip the new seal seat O -ring in clean 525 viscosity
Insert the O-ring installer J 33011 into the com pressor
neck until the installer "bottom s" . Low er the m oveable
slide of the O-ring installer to release the O -ring into the
seal O-ring lower groove. (The com pressor neck top
installer to seat the O -ring and rem ove the installer.
Dip the new seal in clean 525 viscosity refrigerant oil and
handle clockwise. The stam ped steel case side o f the
lip seal must be engaged with knurled tangs of installer
so that flared-out side of lip seal is facing and
installed towards the com pressor. Install seal protector
shaft, Figure 22, and push the seal in place with a
rotary motion or place the seal protector J 34014 over
end of com pressor shaft, Figure 22, and slide the new