Chevrolet 10 Series 1968, Service Manual

Page: 539 / 713

STEERING 9-6
Fig. 11—C h evy Van Steering Wheel and Mast Ja ck e t
3. Attach and tighten mounting bolts and tighten bolt at
the coupling or universal joint.
4. Install pitman arm.
STEERING G EA R -C H EV Y VAN (Fig. 11-12)
Removal
Because the steering gear is cradle mounted in the
frame rail, the steering gear must be removed from in­
side the vehicle as follows:
1. Remove steering wheel as outlined under Steering
Wheel—Removal.
2. Place vehicle on suitable jackstand or hoist. Remove
deflector and extension assembly and, using Tool
J-5504, disconnect pitman arm (with drag link
attached) from sector shaft after marking position of
pitman arm on sector shaft.
3. Disconnect brake pedal from lower brake pedal
assembly.
4. Disconnect transmission shift linkage from levers.
5. Remove bolts retaining gear to frame rail.
6 . From inside vehicle remove the brake pedal pre­
viously disconnected.
7. Pull back floor mat as required and disconnect toe
pan seal and remove toe pan cover.
8 . Remove mast jacket bracket from support and re­
move steering gear, mast jacket, and transmission
controls as an assembly from vehicle and place on
bench.
9. Remove transmission lever housing from steering
gear mounting pad and loosen mast jacket after not­
ing mast jacket to steering shaft relationship.
10. Remove mast jacket from steering gear shaft.
Installation
1. With steering gear fully assembled, slip mast jacket
over steering shaft and attach mast jacket clamp
and transmission lever housing to steering gear.
2. Position steering gear in frame rail and attach mast
jacket bracket to support, leaving bolts loose.
3. Insert steering gear retaining bolts from left hand
side and install lock washers and nuts finger tight.
4. Attach transmission shift linkage to levers.
5. Install toe pan cover and seal. Insert brake pedal
through cover opening, install seal and spacer and
attach to lower brake pedal assembly. Line up in­
dexing marks. Torque to 40 ft. lbs.
6 . Tighten support bracket bolts.
7. Torque steering gear attaching nuts.
8 . Install pitman arm to sector shaft and tighten nut.
9. Install deflector and extension assembly.
10. Install steering wheel as outlined in this section.
SECTOR SHAFT OIL SEAL REPLACEMENT
1. Remove pitman arm from sector shaft.
2. Pry out old seal.
3. Using Tool J-9225 install new seal (fig. 13).
4. Install pitman arm and torque nut or clamping bolt to
specifications.
MAST JA CKET-EXCEPT TILT CAB MODELS
NOTE: For Chevy Van mast jacket removal,
disassembly, assembly and installation, see
Steering Gear—Removal and Installation.
Removal (Figs. 14-15)
1. Remove clamp bolt from steering coupling at steer­
ing gear.
2. On 3-speed and automatic transmission models, re­
move shifter rods.
3. On light-duty models, loosen clamp on engine side of
firewall and slide clamp down on mast jacket. From
inside cab, on medium and heavy-duty models, re­
move screws from cover at firewall opening and
Fig. 12—C hevy Van Steering G ear Mounting
CHEVROLET TRUCK SERVICE MANUAL