Remove And Install Rack Piston And Valve Assembly; Remove And Install Valve And Worm Assembly From Rack Piston; Remove And Install Valve Assembly From Worm Assembly; Disassemble And Assemble Valve - Pontiac TRANS AM 1977 Service Manual

POWER STEERING GEAR AND PUMP 3B3-37
5. REMOVE AND INSTALL RACK PISTON AND
VALVE ASSEMBLY
REMOVE INSTALL
1.
Remove parts as 1. Install parts as
shown. Push on shown. Make sure
stub shaft. DO NOT rack piston teeth
remove upper bearing are positioned toward
assembly (see stub
side cover opening.
shan seal removal)
HOUSING ASSEMBLY-
ack piston teeth
STUB SHAFT
6. REMOVE AND INSTALL VALVE AND WORl
ASSEMBLY FROM RACK PISTON
REMOVE INSTALL
1.
Unscrew valve and worm 1. Install "0" ring,and
from rack.
teflon ring as shown.
2. Remove teflon ring and
2. Screw worm and valve
rack piston "0" ring from
into rack piston.
rack piston. See procedure below.
VALVE AND WORM ASSEMBLY
RACK PISTON "0" RlNG SEAL
RACK-PISTON-NUT
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------------------
A. Assemble worm and valve to rack piston
Hold rack teeth and worm
b, Turn worm and
drive pin in relation shown
valve counterclockwi:
with light pressure to
hold worm thread agai
c. Turn worm and valve clockwise
to complete assembly
B. Check relation of stub shaft and rack piston
a. Screw worm and valve into
rack piston until valve face
and rack piston face are
STUB SHAFT
flush
. - d
\
b. With rack piston in position shown.
flats on stub shaft and piston are to be
~ - -
~
parallel. If not parallel, disassemble and repeat "A:' above
7.
REMOVE AND INSTALL VALVE
ASSEMBLY FROM WORM ASSEMBLY
REMOVE INSTALL
1.
Remove parts as
1. Install parts as shown.
shown. See below. Retaining rin!
VALVE ASSEMBLY- r a c c e s s hole
/
"0" RlNG SEAL
SHAFT TO WORM RETAINING RlNG
r-------------------------------
,
Assemble worm to valve
I
RETAINING RlNG - Install with
I
curved in e n d on same side as
I access hole.
I
I
WORM ASSEMBLY
8. DISASSEMBLE AND ASSEMBLE VALVE
DISASSEMBLE ASSEMBLE
1. Disassemble parts 2. Assemble parts
as shown. as shown.
VALVE BODY "0" RlNG
- \
, .
Y
1
SPOOL TO BODY "0" RlNG
'
- - - - - - - -
-
- - -
- -
- -
- -
- - -
-
- - - - - -
A. Loosen shafl cap
I
8 . Remove and install stub shaf
'
Pull cap out approx. 6 mm(l/d'
I
-
L ~ a p lightly on
I
I/
wood block
Pin on shafl and hole ~n
!
spool ( Disengage to remove)
C. Remove and install spool
i
D. Engage stub shaft
Rotate while
removing or
installing 1
Lubricate spool and body
I
with power steering fluid. I
!
L ~ o t c h must fully engage
pin and cap must seat
aaainst shoulder.
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