Chevrolet 10 series 1973, Руководство по капитальному ремонту

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1 -1 2 AIR C O N D IT IO N IN G C OM PRESSO R
actual force required to pull the feeler gauge
free is measured.
Rotate the shaft approximately 120 degrees and
again check with a feeler gauge between the parts.
Rotate the shaft another 120 degrees and make a
third check. From this total of three feeler gauge
checks, use the MINIMUM reading to select a
numbered seat to correspond to the feeler gauge
reading (i.e., if minimum reading was .019, use a
No. 19 seat. If reading was .0195, use a No. 19-1/2
seat). Place this seat in the parts tray in the
Fig. 2 3 -Checking Clearance Between Rear Ball and
W obble Plate
Fig. 2 4 -Checking Clearance Between Rear T hrust
Bearing and O uter T hrust Race
compartment corresponding to the rear ball position
of the No. 1 piston.
13. Repeat the operation described in Step 12 for
pistons No. 2 and No. 3.
14. The next gauging operation is to determine the
space between the REAR thrust bearing and the
upper (outer) rear thrust race. Use a suitable
combination of feeler gauge leaves so that 4 to 8 oz.
of force is required to pull gauge free (fig. 24).
Select a numbered thrust race to correspond to this
feeler gauge reading and place this race in parts
tray in the rear thrust race compartment.
15. Loosen the nuts and ring from the checking cage.
16. Drive the cylinder halves apart, using a fiber block
and mallet.
17. Carefully remove the rear half of the cylinder and
set the front half (including the pistons, shaft and
wobble plate assembly) on Fixture J-9397.
18. Carefully remove one piston at a time from the
wobble plate and the front half of the cylinder.
Transfer each piston, ball and seat to its proper
place in the parts tray along with the numbered
rear seat chosen in Steps 12 and 13 above.
CAUTION:
When the balls and seat are
removed from the piston, be sure that they are
placed in the proper parts tray pocket so as not
to lose the relationship of the balls and seats to
the proper end o f the piston.
19. Remove the rear outer (upper) ZERO thrust race
from the compressor shaft and replace it with the
numbered thrust race (determined in Step 14
above) from parts tray.
NOTE: This ZERO thrust race may be put
aside for reuse in future gauging and/or
rebuild operations.
20. The gauging operations are now complete.
Assembly
After properly performing the gauging procedure and
choosing the correct ball seats and thrust races as
outlined under "Gauging Procedures," the cylinder
assembly may be reassembled. Be sure to install all new
seals and "O" rings. All are included in the compressor
seal service kit.
Assembly procedure is as follows:
1. Support the front half of the cylinder assembly on
Fixture J-9397 and install the shaft and wobble
plate, threaded end down, with its front bearing
race pack (ZERO race, bearing and ZERO race)
and its rear bearing race pack (ZERO race, bearing,
numbered race) if this was not already done at the
end of the "Gauging Procedure."
2. Assemble a piston ring, scraper groove toward the
center of the piston, to each end of the three
pistons.
W obble Plate
Rear Ball
Feeler Gages
Spring Scale
(Pull Scale
parallel to
slope of
W obble Plate)
Feeler Gages
Spring Scale
Rear Thrust Race
Thrust Bearing
OVERHAUL MANUAL