Chevrolet 10 1971 Series Chassis Service Manual page 346

STEERING 9-6
2. Remove upper shaft to intermediate coupling bolt.
3. Remove the steering gear to frame bolts and lower
the steering gear far enough to remove the inter­
mediate shaft assembly.
It is not necessary to remove the pit­
NOTE:
man arm from the pitman shaft.
Disassembly
1. Mark cover to shaft relationship. Pry off snap ring
and slide cover from shaft.
2. Remove bearing blocks and tension spring from pivot
pin.
3. Clean grease off pin and end of shaft. Scribe loca­
tion mark on pin on same side as chamfer in shaft.
4. Supporting shaft assembly securely, with chamfer up,
press pin out of shaft with arbor press.
Do not drive pin out with hammer.
NOTE:
This will cause sticky or binding bearings when
reassembled.
5. Remove seal clamp and slide seal off end of shaft.
Assembly
1. Be sure all parts are free of dirt. Slide seal onto
steering shaft. With lip of seal against step in shaft
clamp seal.
2. Press pin back into shaft from chamfered side.
cate pin in shaft using scribe mark as reference.
Pin must be centered within .012 in. or
NOTE:
binding in the coupling will result.
3. Check centering of pin (fig. 12).
a. Place just enough 3/8" flat washers on pin to pre­
vent bearing block from bottoming when installed.
b. Measure distance from end of pin to top of bear­
ing with micrometer.
c. Remove bearing and washers and place same
Fig. 12— C he ckin g C oupling Pin Centering
bearing and washers on other end of pin. Measure
distance from end of pin to top of bearing. If
micrometer readings in Steps b and c differ more
than .012, repeat last part of Step 2 and recheck.
4. Apply a liberal amount of wheel bearing grease to
inside and outside of bearing blocks and inside of
cover.
5. Position tension spring and bearing blocks on pin.
6. Slide cover over bearing blocks aligning reference
mark on cover with mark on shaft. Install seal into
end of cover and secure with snap ring retainer.
Installation
All steering gear to frame and all
NOTE:
steering coupling fasteners are important at­
taching parts in that they could affect the per­
formance 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 specified during
reassembly to assure proper retention of this
part.
Lo­
1. Install the intermediate shaft assembly onto the
steering shaft, aligning the flat on the shaft with the
flat in the coupling. Install the pot joint clamp bolt
and torque to specifications.
2. Lift the steering gear into position, guiding the flex­
ible coupling bolts into the shaft flange holes.
3. Install the steering gear to frame bolts and torque to
specifications.
4. Install the flexible coupling to steering shaft flange
bolt lockwashers and nuts. Check that the coupling
alignment pins are centered in the flange slots and
then torque the coupling bolts to specifications.
Intermediate Steering Shaft with
Universal Joint Couplings
Removal (Fig. 13)
1. Set front wheels in straight ahead position. This can
be done by driving the vehicle a short distance on a
flat surface.
2. Mark upper universal joint yoke to steering shaft
relationship and lower yoke to steering gear worm-
shaft relationship.
3. Remove both upper and lower universal yoke pinch
bolts.
4. Remove steering gear to frame bolts and lower the
gear.
It is not necessary to disconnect the
NOTE:
pitman arm from the steering gear pitman shaft.
5. Remove the intermediate steering shaft and universal
joint assembly.
Disassembly
1. If the upper or lower half of the intermediate steer­
ing shaft is to be replaced, proceed as follows:
a. With the shaft assembly on a bench, straighten
the tangs on the dust cap. Separate the upper
and lower portions of the shaft assembly.
b. Remove the felt washer, plastic washer and dust
cap. Discard the felt washer.
10-30 CHEVROLET TRUCK SERVICE MANUAL