Compressor Assembly - Chevrolet 1988 Light Duty Truck Repair Manual

1B1-18 A-6 AIR CONDITIONING COMPRESSOR
N O TIC E: Do n o t p u s h th e p is to n a n d rin g
a s se m b ly in to J 24608-6 w ith o u t p o s itio n in g
and ro ta tin g because the n e e d le b e a rin g s o f the
rin g sizer may dam age the e n d o f the p is to n .
• Rotate the piston and ring assembly in J 24608-6
several turns until the assembly rotates relatively
free in the ring sizer.
Figure 40— Installing No. 1 Piston
Assemble the cylinder assembly after perform ing the
" Gaging Procedure," choosing the correct shoe discs
and thrust races and installing any piston rings. Install
new seals supplied in the service kit.
- n - Install or C o n n ect (F ig u res 1, 40 th ro u gh 51)
• Support the front half of the cylinder (29) on J 9397.
1. Shaft and axial plate (38).
• Place the shaft, threaded-end down, with the
front bearing race pack (race and bearing) into
the cylinder if this was not done at the end of
the " Gaging Procedure ."
2. Balls (32) and shoe discs (33) to the pistons (30).
• Apply a coat of petroleum jelly to the " num ­
bered" shoe discs.
3. Piston assembly (30) into the front cylinder half (29)
(figure 40).
• Rotate the axial plate (39) to place the high
point above cylinder bore No. 1.

COMPRESSOR ASSEMBLY

5. Piston (32) to J 24608-1 (figure 39).
• The piston (32) should pass through the ring
gage with a two to eight pound force.
6. Repeat for the opposite end of the piston (32).
7. Lubricate both ends of the piston (32) with 525
viscosity refrigerant oil before installing the piston
into the cylinder bore.
Figure 41 — Installing the Discharge Crossover Tube
• Hold the front thrust bearing pack against the
axial plate hub.
• Repeat for pistons Nos. 2 and 3.
4. Discharge the cross-over tube (26) (figure 41).
• Face the flattened portion of the tube to the
inside of the com pressor to allow for axial
plate clearance.
5. Rear cylinder half (42) over the shaft (39).
• Rotate the shaft (39) to position the pistons in
a stair-step arrangem ent.
• Start the pistons into the cylinder bores.
6. Discharge cross-over tubes (26) into the rear half of
the cylinder (29).
7. Rear cylinder half (42) over the locating dowel pins
(45).
• After aligning, tap the rear half of the cylinder
with a mallet and wood block.
• If necessary, clamp the cylinder in J 9397 to
draw the halves together.