GMC 1989 Light Duty Truck Repair Manual page 29

F igure 20— R em oving th e Rear S u ctio n Reed Plate
Invert the co m p ressor and p lace the shaft end
up on the bench with the internal assem bly
support block resting on the bench.
Im p o rta n t
To prevent d am a g in g the shaft, do not
tap on the end of the com pressor shaft
to rem ove the internal m ech an ism . If the
m ech an ism will not slide out of the co m ­
pressor shell, tap on the front head with
a plastic ham m er.
44 . T u b e
Figure 2 1 — R em oving th e Oil Pick-U p Tube
A-6 AIR CONDITIONING COMPRESSOR 1B1 -11
Figure 22— R em oving the Rear S u ctio n Reed Plate
11. Front head assem b ly (16) from the shell (9).
12. Front seal (17).
13. Front d ischarge valve plate (18).
14. Front suction reed plate (19).
15. Suction cross-over plate (46) (figure 22).
16. C ylin der halves (29 and 42).
17.
18.
19. Pistons (32), balls (34) and seats (35) in th e o rd er in
20. R e ar thrust races (40) and thrust bearing (41) from
21. S h aft (39) from the front cylinder half (29).
F-01588
22. Front thrust races (27) and thrust bearing (28).
46. P la te
63. S c r e w d r iv e r
• Rest the com pressor shell (9) on its side and
push the fronthead assem b ly (16) through the
shell (9).
• Tap on the outside of the front head (16) with a
plastic h am m er to overcom e the friction of the
seal (17) b etw een the fronthead (16) and the
shell (9).
• Pry with a screw driver betw een the casting
(29) and the cover.
• N u m b er the piston and the piston bores with
the sa m e num bers so the pistons can be in­
stalled in their bores (figure 23).
• S ep a rate the cylinders (29 and 42) with a
block of wood and a m allet (figure 24).
• Do not let the d isch arge cross-over tube (26)
touch the axial plate (39).
• Do not strike the shaft at either end to s e p a ­
rate the upper and lower cylinder halves b e ­
cause the shaft (39) can be d am a g e d .
R e a r half (42) of th e co m p ressor from th e pistons
(32).
Front cylinder half (29) with the piston (32), shaft and
axial plate (39) to J 9 3 9 7 .
which th e pistons are m arked.
• Place parts in J 94 02 .
• P lace the pistons (32) in J 9 4 0 2 with the notch
in the casting w eb at the front end of th e pis­
ton into the dim pled groove of the J 9 4 0 2 (fig­
ure 25).
the shaft (39) (figure 26).
• If necessary, bend the d isch arge cross-over
tube (26) to rem ove the shaft (39).
J 21352-A
F -01589