Pontiac Fiero 1988 Service Manual page 114

V-5 AIR CONDITIONING COMPRESSOR OVERHAUL 1D3-11
| 9 | Important
S e a l s
should
n o t b e r e - u s e d
. Always use a
new specification service seal kit on rebuild. Be sure
that the seal to be installed is not scratched or damaged
in any way. Make sure that the seal is free of lint and
dirt that could damage the seal surface or prevent
sealing.
+4- Install or Connect
1. Dip the new seal O-ring in clean 525 viscosity
refrigerant oil and assemble onto O-ring installer
J-33011.
GO
j
*
3 3 0 1 1
G60270-1P3-J
Fig. 26 Installing Shaft Seal Seat O-Ring
Insert the O-ring installer J-33011 into the
compressor neck until the installer "bottoms."
Lower the moveable slide of the O-ring installer
to release the O-ring into the seal O-ring lower
groove. (The compressor neck top groove is for
the shaft seal retainer ring.) Rotate the installer
to seat the O-ring and remove the installer.
Attach the seal to the seal remover and installer
J-23128-A and dip the seal in clean 525 viscosity
refrigerant oil to coat the seal. Install seal
protector J-34614 in the seal, place over shaft and
push seal in place with a rotary motion.
J-34614 SEAL PROTECTOR
520025-1P3
Fig. 27 Lip Seal Installed on Seal Protector
4. Install the new seal retainer ring with its flat side
against the seal, using snap-ring pliers J-5403.
Use the sleeve from seal remover-installer J-9393
to press in on the seal retainer ring so that it snaps
into its groove.
5. To leak test, install compressor leak test fixture
J-9625-A on rear head of compressor and connect
gage charging lines. Pressurize suction and
high-side of compressor with Refrigerant 12
vapor to drum pressure. Temporarily install the
shaft nut and, with the compressor in horizontal
position, rotate the compressor shaft in normal
direction of rotation several turns by hand. Leak
test the seal area and correct any leak found.
Remove shaft nut.
6. Remove any excess oil resulting from installing
the new seal parts from the shaft and inside the
compressor neck.
7. Install the clutch plate and hub assembly as
described in minor repair procedures.
8. Reinstall the compressor, belt and tighten
bracket.
9. Evacuate and charge A/C system.
PRESSURE RELIEF VALVE
Fig. 21
Remove or Disconnect
1. Discharge A/C System.
2. Pressure relief valve.
Install or Connect
1. Lubricate O-ring of new pressure relief valve and
O-ring assembly with new 525 viscosity
refrigerant oil. Install new valve and torque in
place, 7.5-10.5 N-m (5.5-7.7 Ibs.ft.).
2. Evacuate and recharge the system.
3. Leak test per system procedure (Section IB).
HIGH PRESSURE CUTOFF A N D LOW
PRESSURE CUT-OUT SWITCHES
Fig. 21
^ • S Remove or Disconnect
Discharge A/C System.
Electrical connector from switch.
Switch retaining ring, using J-5403 internal snap
ring pliers.
Switch from compressor.
O-ring seal from switch cavity using J-9553-01
O-ring removal tool or equivalent.
If e x i s t i n g s w i t c h w i l l b e r e i n s t a l l e d in
c o m p r e s s o r , a n e w O-ring s e a l m u s t b e
u s e d a n d p r e f e r r a b l y a n e w r e t a i n e r r i n g
s h o u l d a l s o b e u s e d . A n e w s w i t c h k i t
h a s t h e O-ring a n d r e t a i n e r r i n g i n c l u d e d .
Install or Connect
Check switch cavity and O-ring groove in the rear
head for dirt or foreign material and clean as
1.
2.
3.
4.
5.
1.