Compressor Assem Bly- Internal Cylinder And S H A F T - GMC 1989 Light Duty Truck Repair Manual

1B4-12 HR-6 AIR CONDITIONING COMPRESSOR
14. Cylinder seal (15).
15. Suction reed plate (14).
16. Valve plate (13).
17. Head gasket (12).
18. Front head (11).
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Clean
All parts.
Inspect
I?
All parts and replace as necessary.
COMPRESSOR A S S E M B L Y -
INTERNAL CYLINDER AND
SHAFT
■► 4- install or Connect (Figures 4, 31 through 39)
Tools Required:
J 21352-A Support Block
J 33016 Cylinder A lignm ent Rods
J 33026 Com pressor Holding Fixture
Use new seals and gaskets.
Place J 21352-A on the workbench or suitable flat
work surface.
Rear head (28) onto J 21352-A.
• Install J 33016 guide pins small diameter ends
into the through bolt holes (figure 31).
2 Head gasket (27).
.
• Over guide pins into head (28) (figure 32).
Important
• Locate the head gasket (27) to prevent the dis­
charge valve reed retainer on the rear valve
plate (26) from hitting the internal segment of
the head gasket (27) (figure 32).
3. Valve plate (26).
• Over the guide pins into position (figure 33).
A. O -R ing Seal Seat R ecess
B. T h u m b S crew
24. C y lin d e r Seal (L u b rica te d )
23. Rear C y lin d e r
11. F ront Head
Figure 30 — Installing the O-Ring Seals on the
Cylinder Seal Races
A. 12 o'c lo c k R eference P o s itio n
B. 6 o'c lo c k R eference P o s itio n
27. Head G asket
28. R ear Head
Figure 31 — Positioning the J 33016 Guide Pins
A. O p e n in g to Rear S u c tio n Port
(12 O 'C lo c k P o s itio n A s s e m b ly R eference)
B. T h ro u g h B o lt H ole (6)
C. S u c tio n P ressure (O u ts id e C avity)
D. D isc h a rg e P ressure (In n e r C avity)
E. O p e n in g to Rear D is ch a rg e Port
F. H igh P re ssure R e lie f Valve
D rille d O p e n in g in to H igh
G.
Pressure R e lie f Valve A rea
28
Rear Head
.
B-06476
Figure 32 — Installing the Rear Head Gasket
2 1 3 5 2 -A
B-06726
J -3 3 0 1 6
2 1 3 5 2 -A
B-06727