Pontiac Fiero 1988 Service Manual page 96

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 13
1- O-RING S E A T
RECESS
2 - O-RING
(LUBRICATED)
3 - C Y L I N D E R
ASSEMBLY
4 - FRONT HEAD
5 - THUMBSCREWS
I N S T A L L E D
2 OR 3 TURNS
6 - J-33026 HOLDING
F I X T U R E
520031-1D2
Fig. 29 O-Ring Installation on Rear Cylinder
O-Ring Seat Recess
1 - J33016 ASSEMBLY
GUIDE PINS
2 - 12 O'CLOCK
R E F E R E N C E
POSITION
3 - C Y L I N D E R REAR
O-RING IN PLACE
4 - 6 O'CLOCK
R E F E R E N C E
POSITION
520032 102
1 — THROUGH
BOLT AND
GASKET (6)
REQUIRED
2 - J-21352-A
SUPPORT
BLOCK
520033-102
10.
11.
12.
Fig. 31 Front Head Installed:
Thru Bolts and Gaskets in Place
be able to be rotated and w i l l lower "in-line" into
position on the rear of the cylinder. Alignment mark
on rear head should align w i t h cylinder marks
(Fig. 36).
Using both hands, press down on the rear head to force
it over the O-ring at the rear of the cylinder. Remove
the compressor assembly from the holding fixture to
the workbench surface.
Add new through bolt gaskets to the through bolts and
install the bolts into the compressor assembly (Fig.
31). Be sure four ( 4 ) of the through bolts thread into
the rear head before removing the guide pins.
Alternately tighten the through bolts in progressive
torque until a torque of 8-10 N«m (72-84 in. lbs.) is
achieved on all six ( 6 ) bolts.
Install test plate J-9625-A on rear head of compressor
and leak test complete compressor assembly
according to (Bench-Check) leak testing procedure.
Remove test plate, add amount of new 525 viscosity
refrigerant oil to be added as determined in Step 1 of
Remove Process.
Install clutch parts on compressor according to
previous procedure and install compressor on car.
Evacuate and charge the refrigerant system.
Fig. 30 Assembly Guide Pins in Cylinder
Assembly (Standard Head Position)
C O M P R E S S O R F R O N T H E A D , H E A D
G A S K E T , F R O N T V A L V E P L A T E , S U C T I O N
R E E D P L A T E A N D C Y L I N D E R T O
FRONT
H E A D O - R I N G
Remove or Disconnect
1. Discharge the refrigerant system and remove tht
compressor from the car. Drain the oil from the
compressor into a container, measure, record th<
amount and discard the oil.
2. Remove the clutch drive and hub assembly, pulle
rotor and bearing assembly and the clutch coil pe
previous procedure.
3. Remove the shaft seal parts per previous procedur
and discard the old seal parts.
4. Mark the location and note the alignment of the fror
head to the alignment marks on the cylinder. This
important for reassembly. Depending on applicatic
mounting, the front head may be rotated 121