Chevrolet 10 1971 Series Chassis Service Manual page 347

Fig. 13— Intermediate Steering Shaft w ith Universal Joints
2. If the trunnion assemblies are to be replaced, pro­
ceed as follows:
a. Remove the snap rings retaining the trunnion
bushings in one of the yokes.
b. Support the yoke on a bench vise and drive out
one bushing by tapping on the opposite bushing
using a soft drift and hammer.
c. Support the other side of the yoke and drive out
the remaining bushing as in Step b above.
d. Move the yoke on the trunnion as necessary to
separate the upper and lower yokes.
e. Remove the trunnion from the lower yoke as out­
lined in Steps a through d above. Remove and
discard the seals.
A s s e m b ly
1. If the yoke trunnions were removed, reassemble as
follows:
a. Place the new trunnion into the lower yoke.
b. Place new seals onto the trunnion and then press
the new bushings into the yoke and over the trun­
nion hubs far enough to install the snap rings.
c. Install the snap rings.
d. Repeat Steps a through c to attach the upper yoke
to the trunnion.
2. Reassemble the intermediate shaft assembly as
follows:
a. Place the dust cap, plastic washer and a new felt
seal over the shaft on the lower yoke assembly.
b. Align the arrow on the lower yoke assembly shaft
with the arrow on the upper yoke assembly tube
and push the two assemblies together.
c. Push the dust cap, plastic washer and felt washer
into position on the lower end of the upper yoke
assembly and bend the tangs of the dust cap down
against the yoke tube.
In sta lla tio n
The steering gear to frame and all
N O T E :
intermediate steering shaft yoke fasteners are
important attaching parts in that they could af­
fect the performance of vital components and
systems, and/or could result in major repair
expense. They must be replaced with one of the
same part number or with an equivalent part if
replacement becomes necessary. Do not use a
replacement part of lesser quality or substitute
design. Torque values must be used as speci­
fied during reassembly to assure proper reten­
tion of this part.
1. Align the marks made at removal and assemble the
intermediate shaft lower yoke onto the steering gear
wormshaft. Install the pinch bolt and torque to
specifications.
The pinch bolt must pass through the
N O T E :
shaft undercut. If a new yoke was installed, the
slit in the yoke should be up (12 o'clock position).
2. Raise the steering gear into position while guiding the
upper yoke assembly onto the steering shaft.
The marks on the coupling and steering
N O T E :
shaft must align. If a new yoke was installed,
assemble the upper yoke to the steering shaft
with the steering wheel in straight ahead posi­
tion (gear must be on high point).
3. Install the steering gear to frame bolts and torque
to specifications.
4. Install the upper yoke to steering shaft pinch bolt
and torque to specifications.
The pinch bolt must pass through the
N O T E :
shaft undercut.
STEERING GEAR
R e m o v a l
1. Set the front wheels in straight ahead position by
driving vehicle a short distance on a flat surface.
2. Remove the flexible coupling to steering shaft flange
bolts (C-K models) or the lower universal joint
pinch bolt (P models). Mark the relationship of the
universal yoke to the wormshaft.
3. Mark the relationship of the pitman arm to the pit­
man shaft. Remove the pitman shaft nut or pitman
arm pinch bolt and then remove the pitman arm from
the pitman shaft using Puller J-6632 (fig. 1).
4. Remove the steering gear to frame bolts and remove
the gear assembly.
5. C-K Models - Remove the flexible coupling pinch
bolt and remove the coupling from the steering gear
wormshaft.
In sta lla tio n
All steering gear to frame, pitman arm
N O T E :
to pitman shaft and steering coupling fasteners
are important attaching parts in that they could
affect the performance of vital components and
systems, and/or could result in major repair
expense. They must be replaced with one of the
same part number or with an equivalent part if
replacement becomes necessary. Do not use a
replacement part of lesser quality or substitute
design. Torque values must be used as speci­
fied during reassembly to assure proper reten­
tion of this part.
1. C-K Models
a. Install the flexible coupling onto the steering gear
wormshaft, aligning the flat in the coupling with
STEERING 9-7
10-30 CHEVROLET TRUCK SERVICE MANUAL