GMC 1982 Light Duty Truck Service Manual page 117

AIR CONDITIONING C O M P R E SS O R
F o r C om pressor R EM O V A L A N D IN ST A L L A T IO N , see A ir C onditioning Section. F or D IS C H A R G IN G ,
A D D IN G O IL, E V A C U A T IN G A N D C H A R G IN G P R O C E D U R E S FO R C.C.O.T. A /C SYSTEMS, see A ir
C onditioning Section.
M inor R epair Procedures for the A-6 C om pressor.......................................................................................... ID-2
A-6 Com pressor Clutch Plate and H ub A ssem bly...................................................................................... ID-2
A-6 Com pressor Pulley and Bearing Assy...................................................................................................... ID-5
A-6 Com pressor Pulley B e a rin g ....................................................................................................................... ID -6
A-6 Com pressor Clutch Coil and Housing A ssem bly................................................................................ ID-7
M ajor A-6 Com pressor Repair Procedures......................................................................................................... ID-8
A-6 Compressor Shaft S eal................................................................................................................................. ID-8
Seal Leak D etection.......................................................................................................................................... ID -10
A-6 Com pressor Pressure Relief Valve............................................................................................................ ID -1 1
A-6 Com pressor Cylinder and Shaft A ssem bly............................................................................................ ID -13
Rem oval................................................................................................................................................................ ID -13
Disassem bly......................................................................................................................................................... ID -13
Gaging O peration................................................ .............................................................................................. I D -14
A-6 Teflon Piston Ring R eplacem ent.......................................................................................................... ID - 18
A ssem bly.............................................................................................................................................................. I D -18
R e-In stall............................................................................................................................................................. 1 D -2 1
A-6 Comp. Leak Testing (External and In te rn a l)...................................................................................... ID-25
F or all practical purposes, all vehicles make use of the
same air conditioning 4 and 6-cylinder compressors. A ctual
differences between com pressors
m ounting brackets, pulleys, connector assemblies and
com pressor capacities, none o f which will affect the
following O verhaul Procedures.
W hen servicing the com pressor, it is essential that steps
be taken to prevent dirt or foreign m aterial from getting on
or into the com pressor parts and system during disassembly
AIR CONDITIONING COMPRESSOR OVERHAUL ID-1
SE C T IO N 1 D
OVERHAUL
CONTENTS OF THIS SECTION
are found in their
or reassembly of the compressor. Clean tools and clean work
area are very im portant for proper service. The com pressor
connection areas and the exterior of the com pressor should
be cleaned off as m uch as possible prior to any "on car"
repairs or removal of the com pressor for w orkbench service,
The parts must be kept clean at all times and any parts to
be reassembled should be cleaned with naphtha, Stoddard
solvent, kerosene or equivalent solvent