Major A-6 Compressor Repair Procedures - Chevrolet 1980 Light Duty Truck Repair Manual

1 D-8 AIR CONDITIO NING COMPRESSOR OVERHAUL
THIS RIDGE
OF TO O L
M U S T BE
UP W H E N
IN STA LLIN G
BEARING
S U P P O R T
BLOCK
J-21352
1D-17
Figure Installing Bearing
4. Lift Coil and H ousing assembly off compressor.
Replace
1. P osition coil and housing assembly on com pressor
front head casting so that electrical terminals line up with
marks previously scribed on com pressor (Figure I D - 19).
2. A lign locating extrusions on coil housing with holes
in front head casting.
3. Install coil housing retainer ring
ring facing coil,
using Snap-Ring Pliers J-6435 ( # 2 6 ) .
4. Install Pulley and Bearing assembly as described in
"A-6 Com pressor Pulley
R eplacem ent procedure.

MAJOR A-6 COMPRESSOR REPAIR PROCEDURES

Service repair procedures to the Compressor Shaft Seal,
Pressure R elief Valve, Pressure Switch or disassembly o f the
Internal Com pressor Cylinder and Shaft Assem bly are
considered "Major" since the refrigeration system must be
com pletely purged o f refrigerant before proceeding an d /o r
because major internal operating and sealing com ponents of
the com pressor are being disassembled and serviced. Should
an A -6 com pressor, it's com pressor shaft seal, or any other
com ponent ever be removed for servicing because it was
determined to be the cause o f excessive signs o f oil leakage
in the A -6 A /C system , then the oil in the com pressor must
be drained, measured and replaced according to "C.C.O.T.
U N IVE R S A L
HANDLE
J-8092
W i
PULLEY A N D
BEARING
INSTALLER
J-9481
4952
on A-6
Pulley
with flat side of
and Bearing Assembly"
Figure 1D-18 Removing A-6 Coil Housing Retainer Ring
ELECTRICAL
T E R M IN
Figure 1D-19 Installing A-6 Coil Housing
5. Install Clutch Plate and Hub assembly as described
in "A-6 Compressor C lutch Plate and Hub Assembly"
R eplacem ent procedure.
Refrigerant Oil Distribution" in the Air C onditioning
section to determine oil loss. The accum ulator in this A -6
system m ust then also be rem oved - oil drained - measured,
etc. according to sam e section.
W hen replacing the shaft seal assembly (see Figure 1D-
20), pressure relief valve (see Figure ID -26) or pressure
sw itch (see Figures ID -27 and 28), even if the compressor
remains on the vehicle during the operation, it will be
necessary to purge the system o f refrigerant as outlined in
the A ir conditioning section (see "Discharging, A dding Oil,
Evacuating and Charging Procedures for C.C.O.T. A /C
4959