Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 18 / 468

IB-12 OVERHAUL MANUAL
TEFLON RING GROOVE
(PISTON FRONT END)
Fig. 3 2 -- N o tc h I d e n t if y in g F ro n t End o f A-6 Piston
replace the piston rings as required if either condition exists.
See "Teflon Piston Ring" Replacement procedure.
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 com partm ent of Parts Tray
J-9402 (Fig. 33).
8. Place piston in No. 1 com partm ent of Parts Tray
J-9402, with notch in casting web at front end of piston (Fig.
32) into the dimpled groove of Parts Tray com partm ent.
9. Repeat Steps 5 through 9 for Pistons No. 2 and No.
3.
10. Remove rear com bination 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.
13. Exam ine surface of axial plate and shaft. Replace
as an assembly
, if necessary.
A certain am ount of shoe disc wear on axial plate is
normal, as well as some m arkings indicating load of needle
bearings on shaft.
14. Remove discharge cross-over tube from cylinder
half, using self-clamping pliers.
This is necessary only on original factory
equipment,
as ends of the tube are swedged into cylinder
halves. The discharge cross-over tube in internal mechanism
assemblies that have been
previously
serviced have an O-
ring and bushing at EA C H E N D of the tube, and can be
easily removed by hand (see Fig. 53).
15. Examine piston bores and needle bearings in front
Fig. 3 4 -- R e m ov ing Fro n t T h r u s t Races and Be a rin g s
and rear cylinder halves. Replace front and rear cylinders
if any cylinder bore is deeply scored or damaged.
16. Needle bearings may be removed if necessary by
driving them out with special Thin-W all Socket J-9399.
Insert socket in hub end (inner side) of cylinder head and
drive bearing out. To install needle bearing, place cylinder
half on Support Block J-21352, and insert bearing in end
of cylinder head with bearing
identification marks UP.
Use Needle Bearing Installer J-9432 and drive bearing into
cylinder head (Fig. 35), until tool bottom s on the cylinder
face.
Two different width needle bearings are used in
Production compressors - a 1/2" size and a 5/8" size.
The
bearings ARE interchangeable.
Service replacem ent
bearings are all 1/2".
17. Wash all parts to be re-used with trichlorethylene,
Stoddard solvent, kerosene, or a sim ilar solvent. A ir-dry
parts using a source of clean, dry air.
Compressor internal com ponents may be identified by
referring to Fig. 1 and Fig. 2.
Thrust Races
SUPPORT
BLOCK J-21352
Needle Bearing
Installer J-9432
Needle Bearing
Cylinder
Head
SUPPORT
BLOCK J-21352
Fig. 33--A -6 Parts T ra y Fig. 3 5--I nsta 11 i ng N e edle Bearing