Pontiac firebird 1968 - Page 39

1A-12
1968 PONTIAC SERVICE MANUAL
3. Position hub and drive plate assembly Into
compressor front end casting.
4. Place J 9480-2 "free" spacer on hub and drive
plate assembly and screw J 9480 drive plate. In-
stalling tool on threaded end of compressor shaft ap-
proximately three full turns (to prevent tool from
forcing key out of keyway).
CA UTION: Make certain key in hub remains in
place when pressing hub on shaft
5. Using wrench on end of tool body and another
wrench on hex nut, tighten nut to press hub of drive
plate assembly onto shaft approximately 1/4".
6. Remove tool and lock into armature plate hub
to make certain key remains in place.
7. Install J 9480 and press until there is approxi-
mately ,002"-.057" (l/32"-l/16") space between the
frictional faces on pulley and drive plate (Fig.
1A-8).
8. Remove J 9480 assembly.
9. Install hub spacer washer.
10. Install hub and drive plate assembly retainer
ring with flat side of ring facing spacer, using J 5403
(No. 21 Truarc pliers). J 9399 can be used to "snap"
retainer ring in place.
11. Install a new armature plate and hub lock nut,
using J 9399 (special thin wall 9/16" socket). Tighten
to 15 ± 1 lb. ft. torque. The air gap between the
friction faces of pulley and drive plate should now
be between .002" to .057" (1/32" to 1/16") clearance.
12. Operate engine and refrigeration system with
suction pressure of at least 30 psig and discharge
-—— i* * ._
Fig. 1A-8 Installing Hub and Drive Plate Assembly
pressure at least 150 psig. Cycle clutch (by turning
air conditioning off and on) at least twenty times at
approximately one-second intervals to "seat" or
"run-in" mating parts of clutch.
COMPRESSOR PULLEY AND/OR
BEARING ASSEMBLY
REMOVE AND REPLACE-
PONTIAC AND TEMPEST
REMOVE
1. Remove hub and drive plate assembly.
2. Remove pulley assembly retainer ring, using
J 6435 (No. 26 Truarc pliers) (Fig. 1A-9).
3. Place J 9395 puller pilot over compressor shaft
and remove pulley assembly, using J 8433 pulley
puller.
4. Remove puller and J 9395 puller pilot.
5. Remove pulley bearing wire retainer ring with
an awl or a small screwdriver (Fig. 1A-10).
¥7
Fig. 1A-9 Removing Pulley and Bearing Assembly
Retainer Ring