Chevrolet 70 1969 Series, Shop Manual

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STEERING SYSTEM 9A-15
MECHANICAL STEERING GEAR REPLACEMENT
If the steering gear cannot be properly adjust­
ed, or if during adjustment procedures "lumpy" or
"rough" action is noticed, the steering gear must
be removed from the vehicle and overhauled. The
steering gear must be removed from the vehicle
for all overhaul or repair procedures.
STEERING GEAR REMOVAL
1. Disconnect steering linkage from Pitman
arm.
2. Scribe an alignment mark on steering gear
worm shaft and clamp yoke or coupling on steer-
F igure 2 0 — Pitman Arm Installed (Conv. Cab ModelI
ing gear lower or intermediate shaft.
3. Remove bolt attaching lower or intermed­
iate shaft clamp yoke or coupling to steering gear
worm shaft.
4. On conventional cab models which have Pit­
man arm retained with a clamp bolt, nut, and
special hardened washer, scribe an alignment
mark across Pitman arm and shaft (fig. 21). R e ­
move Pitman arm.
On all other vehicles, remove Pitman arm nut
and lock washer; then using puller (J-3186), re­
move Pitman arm.
5. Remove bolts, nuts, and lock washers which
attach steering gear to frame and remove steering
gear.
STEERING GEAR INSTALLATION
1. Position steering wheel in straight-ahead
position and steering gear in center position. Mark
on worm shaft should be in 6 o'clock position.
2. Position steering gear on frame side m e m ­
ber, and at the same time slide the worm shaft
into the clamp yoke or coupling on steering lower
or intermediate shaft.
IM P O R T A N T : Check to make sure match marks
on lower or intermediate shaft clamp yoke or coup­
ling and steering gear worm shaft are aligned.
3. Install bolts, nuts, and washers which at­
tach steering gear to frame. Tighten bolts to torque
listed in "Specifications" at end of this section.
4. Attach lower or intermediate shaft clamp
yoke or coupling to steering gear worm shaft with
bolt; or bolt, nut, and washer. Tighten bolt or nut
to torque listed in "Specifications" at end of this
section.
5. On conventional cab models which have
Pitman arm retained with a clamp bolt, nut, and
washer, install Pitman arm on shaft with match
marks aligned. Install bolt, nut, and washer and
tighten to torque specified in "Specifications" at
end of this section.
On all other vehicles Pitman arm and Pitman
shaft have matching blank serrations which must
be aligned. With Pitman arm and shaft aligned,
press Pitman arm onto shaft and install washer
and Pitman shaft nut. Tighten nut to torque speci­
fied in "Specifications" at end of this section.
CHEVROLET SERIES 70-80 HEAVY DUTY TRUCK SH OP M A N U A L