Pontiac Fiero 1988 Service Manual page 100

HR-6 AIR CONDITIONING C O M P R E S S O R 17
5.
10.
11
Place the compressor rear head on the support
block
as shown in Figure 43. Install the two ( 2 ) J-33016
assembly guide pins into the mounting holes indicated.
Assemble the head gasket (Fig. 4 4 ) over the guide
pins. Gasket must be assembled as shown or the
discharge valve reed retainer of rear valve plate w i l l hit
the internal segment of the head gasket.
Assemble the rear valve plate over the guide pins and
lower plate into position (Fig. 4 5 ) .
Assemble the suction reed plate over the guide pins
and position as shown (Fig. 46). Be sure all three ( 3 )
suction reed tips cover the suction ports in the rear
valve plate, if not, the reed plate is improperly
assembled. Note the recess provisions in rear of
cylinder for suction reed tip movement (Fig. 4 7 ) .
Lubricate a new cylinder to rear head O-ring w i t h
clean 525 viscosity refrigerant oil and install O-ring in
rear cylinder O-ring groove. The O-ring may be
positioned on cylinder as shown in Figure 29 and then
rolled into the O-ring groove but cylinder surface must
be clean. (Preferably cleaned w i t h recommended
solvent and blown dry w i t h air.) Oil may also be added
to the O-ring seal surface of the rear head to ease
assembly.
W i t h the O-ring in place on the rear of the cylinder,
carefully lower the assembly over the guide pins to the
rear head using the hole locations shown in Figure 38.
Using both hands, press the cylinder and shaft
assembly down into the rear head.
Lubricate a new cylinder to front head O-ring w i t h
clean 525 viscosity refrigerant oil and install O-ring in
front cylinder O-ring groove (Fig. 38).
Assemble the suction reed plate over the guide pins
and position as
shown
(Fig. 39). Be sure tips of all
three suction reeds locate above a recess at top of
cylinders or the reed plate is improperly assembled.
Assemble the front valve plate over the guide pins and
lower plate into position (Fig. 40).
12. Assemble the head gasket over the guide pins
(Fig. 41).
1 - 12 O'CLOCK
POSITION
2 - HEAD
GASKET
3 - REAR
HEAD
4 - J-21352-A
SUPPORT
BLOCK
5 - 6 O'CLOCK
POSITION
m
520046-1P2
Fig. 44 Head Gasket Installed in Rear Head
1 - SUCTION CROSS-
OVER OPENING
2 - THROUGH BOLT
HOLES 161
3 - J-21352-A
SUPPORT BLOCK
4 - SUCTION PORT
(3) (IN V A L V E
PLATE)
5 - DISCHARGE
CROSSOVER
PORT
6 - DISCHARGE
PORT (IN
V A L V E PLATE)
520047-1P2
Fig. 45 Rear Valve Plate Installed in Rear Head
1-J-33016 ASSEMBLY GUIDE
PIN (2 REQUIRED)
3-OPEfVUNG TO REAR
SUCTION PORT (CONSIDER
AS 12 O'CLOCK POSITION
FOR ASSEMBLY
R&FEfiENCE)
3 - C0MPRESS0R REAR HEAD
4 - J-21352-A SUPPORT BLOCK
5 - OPENING TO HIGH SIDE
PRESSURE SWITCH CAVITY
^-COMPRESSOR THROUGH
BOLT HOLES (6)
7 - SUCTION PRESSURE
(OUTSIDE CAVITY)
8 - DISCHARGE PRESSURE
(INNER CAVITY)
9 - 0PENING TO REAR
DISCHARGE PORT
10- HIGH PRESSURE R E L I E F
VALVE
1 1 - DRILLED OPENING INTO
HIGH PRESSURE R E L I E F
VALVE AREA
520045-1P2
Fig. 43 Detail of Compressor Rear Head-Assembly Guide Pins Installed