GMC 1982 Light Duty Truck Service Manual page 125

SNAP RING PLIERS
(#21) J-5403
SEAL SEAT
RETAINER
RING
FRONT
HEAD
Fig. 1D-18 Removing or Installing A-6 Shaft Seal Seat
Retaining Ring
S E A L S E A T
R E M O V E R
J 2 3 1 2 8
C E R A M IC
S E A T
Fig. 1D-19 Removing A-6 Shaft Seal Seat and O-Ring
end, turning clockwise, while pressing down, to engage
Rem over tangs with the tabs on the Seal assembly. Then lift
the Shaft Seal assembly out (see Fig. ID-20). D iscard the
Seal.
7. Remove and discard the seal seat O-ring from the
com pressor neck, using O -Ring Rem over J 9533 (see Fig.
ID-19).
8. R echeck the shaft and inside o f the com pressor neck
for dirt or foreign m aterial and be sure these areas are
perfectly clean before installing new parts.
AIR CONDITIONING COMPRESSOR OVERHAUL 1 D-9
5064
O -R IN G
R E M O V E R
J 9 5 5 3
Inspection
Seals should not be reused. Always use a new seal kit
on rebuild (see Fig. I D - 17). Be extremely careful that the
face of the Seal to be installed is not scratched or damaged
in any way. M ake sure that the Seal Seat and Seal are free
of lint and dirt that could dam age the seal surface or prevent
sealing.
Replace
1. Coat the new seal seat O-ring in clean 525 viscosity
refrigerant oil and assemble onto O-Ring Installer J 21508
(see Fig. IB-20).
2. Insert the O-Ring Installer J 21508 completely down
into the com pressor neck until the Installer "bottom s."
Lower the movable slide of the O-Ring Installer to release
the O-ring into the seal seat O-ring lower groove. (The
com pressor neck top groove is for the shaft seal seal retainer
ring.) R otate the Installer to seat the O-ring and remove
Installer (See Fig. ID-21).
3. D ip the O-ring and seal face of the new Seal assembly
into clean 525 viscosity refrigerant oil. Carefully m ount the
Seal assembly to Seal Installer J 9392 by engaging the tabs
o f the Seal w ith the tangs of the Installer (Fig. ID-20).
4. Place Seal P rotector J 22974 (Fig. ID-20) over end
o f com pressor shaft and carefully slide the new Seal
assembly down onto the shaft. G ently twist the Installer J
9392 CLO C K -W ISE, while pushing the seal assembly down
the shaft until the Seal assembly engages the flats on the
shaft and is seated in place. Disengage the Installer by
pressing dow nw ard and twisting counter-clockwise.
O-RING
INSTALLER
J 21508
SEAL
INSTALLER
J 9392
Fig. 1D-20 Replacing A-6 Seal and O-Ring
SEAL
PROTECTOR
J 22974