Pontiac tempest 1968 Service Manual page 46

CUSTOM A I R C O N D I T I O N I N G
1A-19
H
NOTCH BOSS
FRONT H A L F
CYLINDER "
REAR H A L F
CYLINDER "
• PISTON
PISTON
LOCATION
Fig. 1A-22 Pistons and Cylinder Bores Numbered
F i g . 1 A - 2 4 Compressor Parts in Tray
3. Separate front and rear cylinder assemblies
being careful not to damage any parts during
separation.
4
a
Remove rear half cylinder from pistons.
DISASSEMBLE
(Obtain clean J 9402 assembly parts tray to retain
compressor parts during disassembly.)
1. Number pistons (1, 2 and 3) and their bores so
parts can be replaced in their original locations
(Fig. 1A-22).
2. Turn compressor shaft to position swash plate
towards front of compressor in area of discharge
crossover tube. Using J 9492, drive discharge
crossover tube out of rear head assembly toward
front of compressor or use a wooden block as shown
in Fig. 1A-23. DO NOT drive toward rear of com­
pressor as discharge crossover tube may damage
swash plate.
5. Drive discharge crossover pipe from front
head, using J 9492.
6. Push on compressor shaft and carefully remove
pistons, piston rings, shoes and balls; one assembly
at a time. Place parts in the J 9402 tray to keep
parts together (Fig. 1A-24). The front end of piston
has an identifying notch in the casting web (Fig.
1A-25).
7. Remove all piston shoe discs, examine for
indication of failure or probable cause of failure,
then discard all shoe discs.
8. Examine piston balls and, if satisfactory for
reuse, put aside in assembly tray in compartment
associated with proper end of piston.
F i g . 1A-23 Separating Cylinder Halves
F i g . 1A-25 Identification of Front End of Piston