Pontiac FIREBIRD 1972 Service Manual page 1227

9-74 1972 PONTIAC SERVICE MANUAL
WASHER
INNER OUTER
SEAL
,
\
SEAL
J-6278-2
TOP OF TOOL
FLUSH WITH
HOUSING
Fig. 9-103 Installing Pitman Shaft Seals
GEAR ASSEMBLY
1. Lubricate the worm, lower thrust bearing and the
two thrust washers with power steering fluid, then
install one thrust washer, the bearing, and the other
thrust washer over the end of the worm (Fig. 9-104).
2. Lubricate the valve body plastic rings and a new
lower shaft cap "0" ring with power steering fouid.
b. Install the lower shaft cap "0" ring in the valve
body so it is seated against the lower shaft cap.
c. Align the NARROW NOTCH in the valve body
with pin in the worm, then install the valve and
shaft assembly in the gear housing (Fig. 9-105).
d. Apply pressure to the VALVE BODY when in-
stalling. If pressure is applied to the lower shaft
during installation, the shaft may be forced out of
the va1;re body (Fig. 9-106).
STUB VALVE
SHAFT BODY
WORM
SHAFT
,
LOWER THRUST
BEARIN?
LOWER THRUST
BEARING WASHERS
Fig. 9-104 Exploded View o f Worm and Valve Body
I
POSITION
WORM
PIN
I
I
IN VALVE BODY NOTCH
I
I
Fig. 9-105 Valve to Worm Alignment
NOTE: The valve body is properly seated when
the oil return hole in the housing is entirely
uncovered (Fig. 9- 1 0 7 ) .
3. a. Lubricate a new adjuster plug
"0" ring with power
steering fluid and install in groove on adjuster plug.
b. Place seal protector J 6222 over stub shaft, then
install the adjuster plug assembly in the housing
until it seats against the valve body (Fig. 9-108).
c. Remove seal protector.
d. Do not adjust the thrust bearing preload at this
time.
4. Install the rack-piston as follows:
a. Lubricate the rack-piston plastic seal with power
steering fluid.
Fig. 9-106 Installing Valve Body