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CUSTOM AIR CONDITIONING
1
8-3
1
2. A vehicle is involved in a collision and no physical
line should be capped or have a plastic bag tightly taped
perforation to the accumulator is found. An open refrigerant
around it.
COMPRESSOR OVERHAUL
For Compressor REMOVAL AND INSTALLATION,
see Figures 1B-172 thru 175 later in section.
For all practical purposes, all vehicles make use of the
same air conditioning 4 and 6-cylinder compressors. Actual
differences between compressors are found in their mounting
brackets, pulleys, connector assemblies and compressor
capacities, none of which will affect the following Overhaul
Procedures.
When servicing the compressor, it is essential that steps
be taken to prevent dirt or foreign material from getting on
or into the compressor parts and system during disassembly
or reassembly of the compressor. CLEAN TOOLS AND
CLEAN WORK AREA ARE VERY IMPORTANT FOR
PROPER SERVICE. The compressor connection areas and
the exterior of the compressor should be cleaned off as much
as possible prior to any "on are" repairs or removal of the
compressor for workbench service. The parts must be kept
clean at all times and any parts to be reassembled should be
cleaned with clean solvent (trichlorethylene, naphtha or
stoddard solvent) and dried with dry air. When necessary to
use a cloth on any part, it should be of a non-lint producing
type.
Although certain service operations can be performed
without completely removing the compressor from the car,
the operations described herein are based on bench over-haul
with the compressor removed from the car. They have been
prepared in sequence in order of accessibility of the
components.
Pad fenderhkirt and secure compressor near top of
fender skirt with wire, rope, etc.
CAUTION: Do not kink or place excessive
tension on lines or hoses.
M I N O R REPAIR PROCEDURES
FOR THE A-6 COMPRESSOR
The following operations to the A-6 Compressor Clutch
Plate and Hub, Pulley and Bearing, and Coil and Housing
are covered as "Minor" because they may be performed
WITHOUT FIRST PURGING THE SYSTEM OR
REMOVING THE COMPRESSOR from the vehicle.
The Compressor Shaft Seal assembly and Pressure Relief
Valve may also be serviced WITHOUT REMOVING THE
COMPRESSOR from the vehicle but these operations are
covered later in this section as "Major Repair Procedures"
because the system MUST FIRST BE PURGED of
Refrigerant- 12.
Illustrations used in describing these operations show
the compressor removed from the vehicle only to more clearly
illustrate the various operations.
When servicing the compressor, remove only the
necessary components that preliminary diagnosis indicates
are in need of service. Refer to Fig. 1B-27 and Fig. 1B-28 for
information relative to parts nomenclature and location.
Fig.
18-26
A-6
Compressor
Removal and illustration of external compressor
components and disassembly and assembly of internal
components must be performed on a clean workbench.
The work area, tools, and parts must be kept
clean at all times. Parts Tray
J
9402 (see Fig. 1B-60)
should be used for all parts being removed, as well as for
replacement parts.
When an A-6 compressor is removed from the car for
servicing, the amount of oil remaining in the compressor
should be drained and measured. This oil should then be
discarded and new 525 viscosity refrigerant oil added to the
compressor (See Fig. 1B-26 and see "C.C.O.T. Refrigerant
Oil Distribution").
The accumulator in the A-6 system must also be
removed-oil drained-measured, etc. if the compressor is
removed from the system. The opposite is also true. If the
accumulator is removed, then the compressor must also be
removed and oil quantities determined (see "C.C.O.T.
Refrigerant Oil Distribution").
A-6 COMPRESSOR CLUTCH PLATE
AND HUB ASSEMBLY
Remove
1. Place Holding Fixture J 9396 in a vise and clamp the
compressor in the Holding Fixture.
2. Keep clutch hub from turning with Clutch Hub
Holder J 25030 or J 9403, and remove locknut from end of
shaft using Thin Wall Socket J 9399 (Fig. 1B-29).
CAUTION: To avoid internal damage to the
compressor, DO NOT DRIVE OR POUND on
the Clutch Plate and Hub assembly OR on the end
of the shaft. Ifproper tools to remove and replace
clutch parts are not used, it is possible to disturb
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