TRUCK SERVICE MANUAL
15 Steering Gear Alignment
HORN OPERATION AND CIRCUIT
The horn will not operate with the ignition switch
14 Steering Wheel Alignment
in the "OFF" position.
3. If steering wheel alignment is off return vehicle to
When the ignition switch is in the "ON" or
work area for further adjustment. Stop vehicle
"ACCESSORY" position, current is available at the horn
with front road wheels (not steering wheel)
relay. To energize the relay and feed current to the horn,
straight ahead as indicated by driving test.
a path to ground must be available. The path to ground
4. Disconnect drag link at the steering arm (Pitman
is completed through the horn button mechanism in the
5. Manual Steering:
Turn steering wheel until
mark on steering gear output shaft is
The current path from the horn relay is through a
perpendicular to the input shaft, and the input
connector and wire that enters the steering column
shaft yoke pinch bolt is at the bottom of the
jacket tube, where a spring loaded contact roller rides on
shaft, as shown in Fig. 15.
the contact ring on the lower side of the steering wheel
Power Steering: Turn steering wheel until mark
hub. This 'contact ring is connected to the horn button
on steering gear output shaft is perpendicular to
base plate by a long "ground" screw. When the plastic
the input shaft (Fig. 15). If the steering wheel is
horn button is depressed, the metal contact cup makes a
off center remove yoke from steering gear input
connection from the base plate through the contact cup
shaft and reinstall on different serrations to align
support spring, to the steering drive shaft where the path
to ground proceeds down the steering shaft through the
6. With the road wheels straight ahead and
steering gear to the frame.
steering gear aligned properly, adjust drag link
so it can be connected to the steering arm
(Pitman Arm) without altering alignment.
Connect drag link to Pitman Arm.
The steering drive shaft tube bearings and the
7. Test drive vehicle to assure that proper
universal joints should be lubricated at assembly with IH
alignment has been accomplished and that
251 HEP grease or equivalent NLGI #2 multi-purpose
steering is correct.