Pontiac FIREBIRD 1972 Service Manual page 318

4-32 1972 PONTIAC SERVICE MANUAL
INSTALL
NOTE: I f a vaila ble pressure is less than l40psi,
start engine to build up reservoir to this pres-
sure.
Preassemble metal sleeve and rubber seal.
Place nut on tubing.
Insert tube into metal sleeve and rubber seal until
tube bottoms.
Hold tube in bottomed position and tighten the tube
nut to 70 lb. in. torque.
NOTE: Tubing may be reinstalled at its connec-
tions. I f tubing is cracked at end, it will be
necessary to cut flush and use a new metal
sleeve and rubber seal to assemble as described
above. Be careful not to remove too much or
tubing may be kinked or broken at full suspen-
sion travel. Care should be taken that proper
routing is followed in areas close to the exhaust
system toprevent burning the tubing. Notepar-
ticularly the areas at rear suspension cross-
member.
COMPRESSOR, RESERVOIR AND
REGULATOR VALVE ASSEMBLY
REMOVE
1. Deflate system through service valve (Figs. 4-37 and
4-38).
2. Disconnect high pressure line at pressure regulator
valve. Also disconnect vacuum line at compressor.
3. Remove upper bracket screw securing assembly to
car and withdraw assembly.
INSTALL
1. Install assembly in bracket and tighten nuts to 20 lb.
in. torque.
2. Install assembly in car and tighten upper bracket
attaching screw to 20 lb. ft. torque.
3. Connect high pressure line to regulator valve and
tighten fitting nut to 70 lb. in. torque.
4. Install vacuum line to compressor.
5. Inflate system through service valve to maximum
available pressure (Fig. 4-2).
DISASSEMBLE
The compressor (Fig. 4-39) is a precision-built mechanism
that should be carefully handled and assembled. Care
must be taken to prevent entrance of dirt or other foreign
matter.
CAUTION: This unit must not be lubricated as
it is designed to operate dry.
1 . Remove compressor as outlined above.
2. Remove two adapters and flexible mounts on com-
pressor end of assembly.
3. Remove nuts from three reservoir retaining (long)
bolts. The bolts enter from reservoir flange side of
unit.
4. Remove nuts from three compressor retaining (short)
bolts. These bolts enter from compressor side of unit.
CAUTION: DO NOT attempt to turn short
bolts as they have a second nut hidden between
reservoir flange and second stage housing. Al-
ways remove nuts from bolts while holding
bolts stationary.
5. Separate compressor assembly and reservoir. Discard
reservoir sealing "0" ring.
6. Remove cover retaining screw. Remove cover and
discard cover gasket.
7. Remove three compressor retaining (short) bolts that
hold first and second stage housings together.
8. Separate first and second stage housings by sliding
second stage housing straight off piston.
9. Remove two pressure regulator valve assembly re-
taining screws.
10. Remove valve assembly from second stage housing
and discard "0" ring seal.
11. Disconnect distributor arm tension spring from
swivel arm.
12. Remove actuating arm retaining screw and arm.
13. Piston and diaphragm assembly can now be removed
from first stage housing by carefully sliding the as-
sembly straight out of housing.