Pontiac Fiero 1988 Service Manual page 112

V-5 AIR CONDITIONING COMPRESSOR OVERHAUL 1D3-9
1 - CLUTCH COIL
2 - DRIFT PUNCH
3 - STAKE IN FRONT
HEAD (3 PLACES)
520016-1 P 3
Fig. 19 Staking Clutch Coil To Front Head
1 - F R O N T HEAD SURFACE 3 - C L U T C H
COIL
3 - S T A K E FRONT HEAD HOUSING
0.28-0.35mm DEEP (.010-.015")
520021-1D2
Fig. 20 Details of Stakes In Front Head for Clutch Coil
even if the compressor remains on the vehicle during
the operation, it will be necessary to discharge the
system of refrigerant (see Section IB). Other than
clutch repair procedures, the same holds true for any
disassembly of the compressor.
If the compressor rear head is to be serviced,
the refrigerant oil must be measured, recorded and
replaced. See Section IB to determine how much oil to
add to new assembly.
A clean workbench covered with a sheet of clean
paper, and a place (clean trays, etc.) for all parts being
1 - PRESSURE RELIEF VALVE
2 - DISCHARGE PORT
3 - SUCTION PORT
4 - CONTROL SWITCHES
5 - MOUNTING BOSS
520017-1D3
Fig. 21 Compressor and Clutch Assembly - Rear View
removed and replaced is important, as is the use of the
proper, clean service tools.
N O T I C E :
Any attempt to use makeshift or
inadequate service tools or equipment may result
in damage and/or improper compressor operation.
1- S T E E L S H E L L
2 - L I P S E A L
520033-1D1
Fig. 22 Compressor Shaft Seal
SHAFT S E A L REPLACEMENT
Seal Leak Detection
Fig. 23 thru 27
A shaft seal should not be changed because of
small amounts of oil found on an adjacent surface. The
seal is designed to leak some oil for lubrication
purposes. A shaft seal should be changed only when a
large amount of sprayed oil is found, and only after
actual refrigerant leakage is found by using an
approved leak detection procedure (see "LEAK
TESTING THE REFRIGERANT SYSTEM,"
SECTION IB).
Should a compressor shaft seal ever have to be
replaced, the accumulator in this system must also be
removed from the vehicle. The oil in the accumulator
then must be drained, measured and replaced
according to the direction in IB to determine oil loss.