Pontiac Fiero 1988 Service Manual page 99

16 H R - 6 A I R C O N D I T I O N I N G C O M P R E S S O R
1 - 12 O'CLOCK
REFERENCE
2 - SUCTION CROSS-
OVER OPENINGS
3 - J-21352-A SUPPORT
BLOCK
4 - THROUGH BOLT
HOLES (6)
5 - DISCHARGE CROSS-
OVER OPENING
6 - DISCHARGE V A L V E
R E E D R E T A I N E R S
7 - SUCTION INTAKE
OPENINGS
520042-102
Fig. 40 Front Valve Plate Installed and Detail
Description
1 - 12 O'CLOCK
REFERENCE
2— HEAD GASKET
3-J-21342-A SUPPORT
BLOCK
520043-1D2
Fig. 41 Head Gasket Assembled on Front Valve Plate
C O M P R E S S O R C Y L I N D E R A N D S H A F T
4=4- Remove or Disconnect
1. Discharge the refrigerant system and remove the
compressor from the car. Drain the oil from the
compressor into a container, measure, record the
amount and discard the oil.
2. Remove the clutch drive and hub assembly, pulley
rotor and bearing assembly and the clutch coil per
previous procedure.
1 - HIGH PRESSURE
R E L I E F V A L V E
OPENING
2 - 12 O'CLOCK
R E F E R E N C E
3 - SUCTION PORT
4 - H O L E T H R E A D
SIZE M10x 1.5-6H
5 - DISCHARGE PORT
6 - HOLE THREAD SIZE
M8x 1.25-6H
7 - HOLE THREAD SIZE
M10x 1.5-6H
8 - 6 O'CLOCK
R E F E R E N C E
9 - PRESSURE B L E E D
HOLE IN HIGH
PRESSURE SWITCH
C A V I T Y
520044-102
4.
Fig. 42 Installation of Compressor Front Head
. Remove the shaft seal parts per previous procedure
and discard the old seal parts.
Mark the location and note the alignment of the front
and rear heads in relation to the compressor cylinder
(Fig. 27). This is important for reassembly. Depending
on application mounting, the front head may be
rotated 120° clockwise or 120° counterclockwise
from the "standard" position (Fig. 2 ) .
Remove the six ( 6 ) compressor through bolts and
gaskets. Discard the gaskets.
Using a plastic headed hammer and wood block, tap
around the edge of the rear head to disengage head
from the cylinder. Separate the rear head, head gasket,
rear valve plate, suction reed plate and cylinder to
rear head O-ring. Discard the head gasket and the
O-ring.
Using a plastic headed hammer, tap the front head at
the mounting locations to disengage the head from the
compressor cylinder. Remove the front head, head
gasket, front valve plate, suction reed plate and
cylinder to front head O-ring. Discard the head gasket
and the O-ring.
Inspect the front and rear valve plates, suction reed
plates and compressor heads for damage or wear.
Replace as necessary.
- M i Install or Connect
Place the J-21352-A support block (Fig. 3 7 ) on the
workbench or suitable flat work surface. Position
support block as shown to properly position the rear
head for specific detail assembly of the compressor.