Chevrolet 70 1969 Series, Shop Manual

Page: 458 / 913

STEERING SYSTEM 9A-7
STEERING CONNECTING ROD
A non-adjustable connecting rod is used on
Series 70 tilt cab models equipped with the
F-070 front axle to connect the Pitman arm to the
steering arm. No periodic maintenance is required
other than keeping stud nuts properly torqued. If
connecting rod becomes worn or damaged, replace
the complete assembly in same manner as non-
adjustable drag link explained previously.
Series 70 tilt cab models equipped with the
F-090 or F-110 front axle of the type shown in
figure 8 . If ball stud looseness is found on this
rod, loosen the nut and tighten the ball stud ad­
justing screw 5 to 10 inch-pounds torque; then
tighten the lock nut 10 to 15 foot-pounds torque. If
this does not correct the looseness, replace the
connecting rod assembly.
TIE ROD
17 16
Lube Fitting
Dust Cork Washer
Dust Seal Spring
Steering Arm
Stud Nut
Stud
Dust Cork
8 Dust Cork Shield
9 Stud Bearing
10 Clamp Bolt
11 Tie Rod
12 Bolt Nut
13 Tie Rod End
14 Grease Seal
15 Lock Ring
16 Tie Rod End Plug
17 Seat Spring
18 Spring Seat
11144
Vehicles covered in this manual have a three-
piece tie rod connecting left and right steering
arms. The tie rod consists of a tube and two socket
end assemblies. Tube is threaded into socket ends
and locked with clamp bolts. Right and left threads
are provided to facilitate toe-in adjustments and
steering gear centering.
On vehicles equipped with F-070 or F-090
front axles, tie rods are self-adjusting and require
no attention in service other than periodic lubri­
cation and inspection to see that ball studs are
tight. Socket ends should be replaced when excess­
ive up and down motion or any lost motion or end
play at ball end of stud exists.
On vehicles equipped with F-110, F-120, F-150
or F-160 front axle, tie rod ends (fig. 9) are con­
structed to automatically compensate for wear at
bearing surfaces. Tie rod end parts are replace­
able. Snap ring and plug can be removed from
socket end to permit removal of end stud, bearing,
and seat. Tie rod socket ends are self-adjusting
and require no attention in service other than per­
iodic lubrication and occasional inspection to check
end studs in steering arms. If stud is allowed to
work loose, excessive play will enlarge holes in
steering arms.
M A IN T E N A N C E
1. Clamp bolt nuts should be periodically
checked for tightness.
2. Inspect tie rod for bent condition. If tie rod
is bent more than 5 degrees, replace assembly. If
tie rod is bent less than 5 degrees, tie rod may be
straightened provided cold straightening method is
used.
3. Lubricate tie rod ends as directed in L U ­
BRICATION (SEC. 0) of this manual.
Figure 9— Tie Rod Construction (FI 10, F I 20, F I 50, and
F I 60 Front Axle) (Typical)
TIE R O D R E P L A C E M E N T
R emoval
1. Remove cotter pins and stud nuts attaching
tie rod to right or left steering arm.
2. Remove ball stud from steering arm by
tapping on steering arm with a hammer while using
a heavy hammer as a backing at the steering arm.
Push upward on tie rod to remove from steering
arm.
N O T E : If tie rod end assemblies are damaged
in any way, they must be replaced.
Installation
1. If socket end assemblies were removed
from tie-rod, install socket ends on tie rod. Be
sure both ends are threaded an equal distance into
the tie rod.
2. Make sure threads on stud and in stud nut
are clean and not damaged.
3. Place clamps over socket ends, then posi­
tion ball studs on socket ends in holes in steering
arm.
4. Install stud nuts and tighten to torque speci­
fied in "Specifications” at end of this section. In­
stall new cotter pins and lubricate end sockets as
described in LU B R IC A T IO N (SEC. 0).
5. Adjust toe-in as described in "F R O N T
E N D A L I G N M E N T " (SEC. 3A).
6 . Before tightening tie rod clamp bolts, make
sure tie rod ends are in alignment with ball studs.
If tie rod is not in alignment with the stud, binding
will result.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L