Pontiac Fiero 1988 Service Manual page 94

HR-6 AIR CONDITIONING C O M P R E S S O R 11
[7] ONE-PIECE SEAL |TJ J-34614 SHAFT SEAL
G O J-23128-A
PROTECTOR
(560250-1P2C
Fig. 25 Removing or Installing Shafx Seal
C O M P R E S S O R P R E S S U R E R E L I E F VALVE
|4HH Remove or Disconnect
1. Discharge the Refrigerant System.
2 Remove old pressure relief valve (Fig. 23).
JhmJ
install or Connect
1. Lubricate O-ring of new pressure relief valve and O-
ring assembly w i t h new 525 viscosity refrigerant oil.
Install new valve and torque in place, 7.5-10.5 N m
(5.5-7.7 lbs. ft.)
2. Evacuate and recharge the system.
3. Leak test system.
C O N T R O L S W I T C H E S (See Fig. 23)
Remove or Disconnect
1. Discharge Refrigerant System.
2. Disconnect the electrical connector from the switch
in the rear head of compressor.
3. Remove the switch retaining ring using J-5403 internal
snap ring pliers.
4. Remove the switch from the compressor.
5. Remove old O-ring seal from the switch cavity using
J-9553-01 O-ring removal tool.
N o t e : If existing control switch is reinstalled in the
compressor, a new O-ring seal must be used and preferably a
new retainer ring should also be used. A new switch kit has
the O-ring and retainer ring included.
+4- Install or Connect
1. Check switch cavity- and O-ring groove in the rear head
for dirt or foreign material and clean as necessary.
Install a new O-ring coated w i t h clean refrigerant oil
into groove in switch cavity.
2. Lubricate the control switch housing w i t h clean
refrigerant oil and carefully insert switch into switch
cavity until switch bottoms in cavity.
3. UsingJ-9533-1 snap ring pliers install switch retaining
ring w i t h high point of curved sides adjacent to switch
housing. Be sure retaining ring is properly seated in
switch cavity retaining groove. Leak test according to
bench test procedure.
C O M P R E S S O R R E A R H E A D , H E A D
G A S K E T , REAR VALVE P L A T E , S U C T I O N
R E E D P L A T E AND C Y L I N D E R T O REAR
HEAD O-RING
|4-fr| 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.
3. Mark the location and note the alignment of the rear
head, compressor cylinder and front head. This is
important for reassembly. Depending on application
mounting, the front head may be rotated 120°
clockwise or 120° counterclockwise from "Standard"
position (Figs. 2 and 27).
4. Remove the six ( 6 ) compressor through bolts and
gaskets. Discard the gaskets.
5. Using a wood block and plastic-headed hammer, tap
around the edge of the rear head to disengage head
from the compressor cylinder (Fig. 28). 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.
6. Inspect the rear valve plate, suction reed plate and
visible portion of compressor cylinder and replace
as necessary.
-M-i Install or Connect
Fasten the front head and cylinder assembly to tin
J-33026 holding fixture as shown in Figure 29. Usinj
masking tape or similar tape, tape across the througl
bolt holes in the front head at the 12 o'clock am