Adjust Worm Bearing Preload; Adjust "Over Center" Preload; General Specifications - Pontiac TRANS AM 1977 Service Manual

Table of Contents

Advertisement

POWER STEERING GEAR AND PUMP
383-39
12. ADJUST WORM BEARING PRELOAD
.--------------
T
A. Tighten adjuster plug until it
I
I
bottoms (use 17mm hex.
1
driver). Torque to approx. 1
40 Newton metres (30 Ft.
!
L Mark housing and adjuster
in line
I
1
I
C. Turn adjuster back until
I
mark lines up with second I
I
mark on housing
-
,
8. Measure 13mm
(V2")
coun-
terclockwise and mark
housing only
7
D. Tighten lock nut. Use punch
in notch-
13. ADJUST "OVER CENTER" PRELOAD
---------------
----------- ----
A. Back off preload adjuster1 8. Turn adjuster in until
(LEFT HAND THREAD)
I
torque to turn stub shaft is
until it stops, then turn
1
( 2 . 5
to 1.2 Newton
~t in one full turn.
metres (6 to 10 in. Ibs.)
7
I
more than reading X 1
- 7
f-
with gear at center
of travel, check torque
to turn stub shaft
(reading
#1)
L ~ o r ~ u e
adjuster lock
nut to 27 Newton
metres (20 Ft. Ibs.)
Prevent adjuster screw
from turning while
torqueing lock nut.
431
5
GENERAL SPECIFICATIONS
LUBRICATION
Lubricant
.................................
Power Steering Fluid No. 1050017 or equivalent
Capacity
-
Complete System
.............................................................
1-1/4
Qts.
Capacity
-
Pump Only
..........................................................................
1/2 Qts.
ADJUSTMENTS
Valve Assembly and Seal Drag
.......................................................
1
to 4 in. lbs.
Thrust Bearing Preload
....................................................
3 to
4
in. Ibs. in excess
of valve assembly and seal drag.
Overcenter Adjustment. 4 to 8 in. Ibs. (new gear) or 4 to 5 in. lbs. (used gear)
in excess of combined thrust bearing preload.
NOTE: Adjustment of the steering gear in the car is not
checked and corrected as necessary. An in-car check
recommended because of the difficulty encountered in
of the steering gear will not show a thrust bearing
adjusting the worm thrust bearing preload and the
adjustment error.
confusing effects of the hydraulic fluid in the gear. Since
a gear adjustment is made only as a correction and not
as a periodic adjustment, it is better to take theextra time
and make the adjustment correctly the first time.
Since a handling stability complaint can be caused by
improperly adjusted worm thrust bearings as well as an
improper gear over-center adjustment, is is necessary
that the steering gear assembly be removed from the car
and both thrust bearing and over-center preload be

Advertisement

Table of Contents
loading

This manual is also suitable for:

Firebird 1977

Table of Contents