Table of Contents
Advertisement
CUSTOM AIR CONDITIONING
18-43
A-6 COMPRESSOR INTERNAL
MECHANISM
Disassembly
Use Parts Tray J 9402 (Fig. 1 B-60) to retain compressor
parts during disassembly.
1. Remove internal mechanism from compressor as
described in "Compressor Internal Mechanism" Removal
procedure.
2. Identify by pencil mark, or some other suitable means,
each piston numbering them as 1, 2 and 3 (Fig. 1B-57).
FRONT
CYLINDER
HALF
PISTON-
SUPPORT
BLOCK
J-2135
Fig.
18-57
Numbering
1977 A-6
Piston and Cylinder
Bores
Number the piston bores in the front cylinder half in like
manner, so that pistons can be replaced in their original
locations.
3. Separate cylinder halves, using a wood block and
mallet (Fig. 1B-58). Make certain that discharge cross-over
tube does not contact axial plate when separating cylinder
halves (a new Service discharge cross-over tube will be
installed later).
C A UTI 0 N : UNDER NO CIRCUMSTANCES
SHOULD SHAFT BE STRUCK AT EITHER
END in an effort to separate upper and lower
cylinder halves because the shaft and the axial
plate could be damaged.
4. Carefully remove the rear half of the cylinder from
the pistons and set the front cylinder half, with the piston,
shaft and axial plate in Compressing Fixture J 9397.
5. Pull up on compressor shaft and remove piston
previously identified as No. 1, with balls and shoe discs, from
axial plate.
a. Inspect the Teflon piston rings for nicks, cuts
or metal particles imbedded in exposed ring surface and
replace the piston rings as required if either condition exists.
See "Teflon Piston Ring" Replacement procedure.
Fig.
18-58
Separating
1977 A-6
Cylinder Halves
6. Remove and discard the piston shoe discs.
7. Remove and examine piston balls, and if satisfactory
for re-use, place balls in No. 1 compartment of Parts Tray
J 9402 (Fig. 1 B-60).
8. Place piston in No. 1 compartment of Parts Tray J
9402, with notch in casting web at front end of piston (Fig.
1B-59) into the dimpled groove of Parts Tray compartment.
Fig.
-1 8-59
Notch Identifying Front End of
1977 A-6
Piston
9. Repeat Steps 5 through 9 for Pistons No. 2 and No.
10. Remove rear combination of thrust races and thrust
bearing from shaft. Discard races and bearing.
11. Remove shaft assembly from front cylinder half. If
the discharge cross-over tube remained in the front cylinder
half, it may be necessary to bend discharge cross-over tube
slightly in order to remove shaft.
12. Remove front combination of thrust races and
bearing from shaft. Discard races and bearing (Fig. 1B-61).
13. Examine surface of axial plate and shaft. Replace as
an assembly, if necessary.
A certain amount of shoe disc wear on axial plate is
normal, as well as some markings indicating load of needle
bearings on shaft.
Advertisement
Table of Contents
