GMC 1982 Light Duty Truck Service Manual page 121

Fig. 1D-7 Installing A-6 Drive Plate
CLEARANCE
.022" TO .057"
Fig. 1D-8 Checking A-6 Air Gap
7. T he pulley should now rotate freely.
8. O perate the refrigeration system in the M A X A /C
control selector (mode) lever position and w arm engine (off
fast idle) speed at 2000 R PM . R apidly cycle the com pressor
clutch by turning the A /C control selector (mode) lever
from O FF -to-M A X at least 15 tim es at approxim ately one
second intervals to burnish the m ating parts of the clutch.
A - 6 C O M P R E S S O R P U L L E Y A N D
B E A R I N G A S S E M B L Y
R em ove
1. Rem ove Clutch Plate and H ub assembly as described
in "A-6 Com pressor C lutch Plate and H ub A sm ." Removal
procedure.
2. Rem ove pulley retainer ring, using Snap-Ring Pliers
J 6435, Fig. ID-9.
3. P ry out absorbent sleeve retainer, and remove
absorbent sleeve from com pressor neck.
4. Place Puller Pilot J 9395 over end of com pressor
shaft.
AIR CONDITIONING COMPRESSOR OVERHAUL 1 D-5
PULLEY
ASSEMBLY
Fig. 1D-9 Removing A-6 Pulley Retainer Ring
NOTICE:
used to prevent internal dam age to com pressor when
removing pulley. U nder no circum stances should puller
be used directly against threaded end of shaft.
5. Remove Pulley and Bearing Assembly, using Pulley
Puller J 8433 (Fig. ID-10).
PULLER
J-8433
204946
Fig. 1D -10 Removing A-6 Pulley and Bearing Asm.
Inspection
Check the appearance of the Pulley and Bearing
assembly (see Fig. ID-5). The frictional surfaces of the
Pulley and Bearing assembly should be cleaned with
trichloroethane, naphtha, Stoddard solvent, kerosene or
equivalent solvent before reinstallation.
Replace
1.
reinstalled, wipe frictional surface of pulley clean. If
frictional surface o f pulley shows any indication of dam age
due to overheating, the Pulley and Bearing assembly should
be replaced.
RETAINER
RING
It is im portant that Puller Pilot J 9395 be
If original Pulley and Bearing assembly is to be
SNAP RING
PLIERS J-6435
#26)
204962
PULLEY AND
BEARING
ASSEMBLY
PULLER PILOT
J-9395