Assembly Of Piston--Diaphragm Assembly; Assembly Of Major Components; Instructions For Fastening Tubing - Pontiac Grand Prix Service Manual

REAR SUSPENSION 4-11
new parts in Distributor Valve and Arm Package during
remaining reassembly.
2. Install washer on intake valve and install in first
stage housing with intake valve retaining spring.
3. Install bnger foot of valve tension spring in boss on
first stage housing, being careful not to distort spring
(Fig. 4-19).
4. Position distributor valve so that short foot of
tension spring fits under valve and vertical leg is in slot
(Fig. 4-20).
5. Install distributor valve bushing, washer, distributor
arm assembly, washer and secure with screw (Fig.
4-21). Tighten screw to 12 lb. in. torque.
6. Install two distributor valve stop bushings and two
a r m assembly stop bushings.
NOTE: Do not install actuating arm, arm tension spring
or arm pivot screw at this time as rocker arm must be
p e e to permit entrance ofpiston into first stage housing.
ASSEMBLY OF PISTON--DIAPHRAGM ASSEMBLY
1. Install new corprene washer, old plate.
2. Using a 13/16" deep socket as a retainer installer,
press against the piston shoulder on the first stage
housing side with wood blocks to seat retainer. The
wood blocks used in the illustration are each 3/4" x
3/4" x 12" (Fig. 4-22).
NOTE: Be sure retainer is securely seated in or&r to
affect an air tight seal against the coprene seal.
3. Install new O-rings by rolling into groove. Relieve
any resulting twist.
4. Install new seals, using a piece of .020" shim stock
(Fig. 4-23).
r
INSTALLATION PARTB
1. PREAsSEMBLE METAL BISEVE AND RUBBER W A L .
a.
DROP TUBE NUT ON TU-.
3.
INSERT TUBE INTO METAL 8 l S I V I AND
RUBBER SEAL ABBEYBLY
UNTIL IT m r a , .
4. BOLDINQ T m
M
m M E D m o N , TIOBTEN TUBE NUT
RUBBER W A L AEStMBLY
CAUTION: Make sure shim stock has no sharp edges
that may cut seal. Do not stretch seal more than is
necessary to install. Seals must be installed so they are
not twisted.
ASSEMBLY OF MAJOR COMPONENTS
1. Slide piston assembly straight into first stage (large
diameter) housing.
2. Install actuating arm and secure to first stage
housing with arm pivot screw. Tighten to 12 lb. in.
torque.
3. Connect arm tension spring to swivel arm.
4. Rotate piston in first stage housing to align
elongated hole in diaphragm with vent port in
housing.
5. Install second stage housing by sliding straight onto
second stage piston.
6. Install three compressor retaining (short) bolts from
the first stage housing side, through the second stage
housing hex shaped, recessed holes. The first and
second stage housings will dign one way only. Position
three small nuts in hex recesses and tighten bolts to 28
lb. in. torque.
7. Install new O-ring on second stage housing. Install
reservoir on second stage housing with three large
nuts. Tighten to 28 lb. in. Install the two reservoir
retaining (long) bolts, from reservoir side, that do not
go through cover. Tighten to 28 lb. in. torque.
8. Install new gasket and cover and secure with
retaining screw. Tighten screw to 35 lb. in. Install third
reservoir retaining (long) bolt. Tighten to 28 lb. in.
9. Install new O-ring on pressure regulator and secure
with two retaining screws with high pressure fitting
toward reservoir. Tighten to 35 lb. in. torque.
10. Install two adapters and flexible mounts on the two
reservoir (long) bolts that do not go through cover.
Tighten to 28 lb. in. torque.
11. Compressor should be output tested before installa-
tion on car (see COMPRESSOR OUTPUT TEST ON
CAR).
12. If compressor passes output test, install Compres-
sor, Reservoir and Regulator Valve Assembly on car.
COMPRESSOR, RESERVOIR AND
REGULATOR VALVE ASSEMBLY
INSTALL
1. Install assembly in bracket and tighten nuts to 30 lb.
Fig. 4-11 Instructions for Fastening Tubing
in. torque.