Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 257

3B4-22 STEERING COLUMNS
DISASSEMBLE
1. Place lock in "run'
2. Remove lock plate, turn signal switch and buzzer switch (see
service manual.)
3. Remove screw & lock cylinder.
on removal, it c o u ld fall in to the colum n, re quirin g com plete
disassem bly to retrieve the screw.
HOUSING
exercised in using over-length screws or
bolts as they may prevent a portion of the
column from compressing under impact.
Inspection
To determ ine if the energy absorbing steering column
com ponents are functioning as designed, or if repairs are
required, a close inspection should be made. Inspection is
called for in all cases where dam age is evident or whenever
the vehicle is being repaired due to a front end collision.
W henever a force has been exerted on the steering wheel or
steering colum n, or its com ponents, inspection should also
be made. If dam age is evident, the affected parts m ust be
replaced.
SWITCH IN LOCK POSITION
Fig. 3 B 4 - 3 2 ~ l g n i t i o n S w it c h A s s e m b ly
LIG H T T R U C K SER V ICE M ANUAL
LOCK CYLINDER INSTALLATION
C A U TIO N : If screw is dropped
Fig. 3B 4-31~Lock C ylinder Removal
ASSEMBLE
1. Rotate as shown, align cylinder key with keyway in housing.
2. Push lock all the way in.
3. Install screw. Tighten to 4.5 N-m for regular columns—
2.5 N-m for adjustable columns.
■To-assemble — Rotate to
x
stop while holding cylinder.
CYLINDER KEY
LOCK RETAINING SCREW
The inspection procedure for the various steering
column com ponents on all C and K Series Trucks is as
follows:
Colum n Sup p o rt B racket
Damage in this area will be indicated by separation of
the m ounting capsules from the bracket. The bracket will
have moved forward toward the engine com partm ent and
will usually result in collapsing of the jacket section of the
steering column.
Colum n J a c k e t
Inspect jacket section of colum n for looseness, a n d /o r
bends.
S h ifte r S h a ft
Separation of the shifter shaft sections will be internal
and cannot be visually identified. Hold lower end of the
"shifter shaft" and move "shift lever" on column through
its ranges and up and down. If there is little or no movement
of the "shifter shaft", the plastic joints are sheared.
S teerin g S h a ft
If the steering shaft plastic pins have been sheared, the
shaft will rattle when struck lightly from the side and some
lash may be felt when rotating the steering wheel while
holding the rag joint. It should be noted that if the steering
shaft pins are sheared due to m inor collision the vehicle can
be safely steered; however, steering shaft replacement is
recommended.
Because of the differences in the steering column types,
be sure to refer to the set of instructions below which apply
to the colum n being serviced.