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STEERING COLUMN
The steering column and steering wheel used in the
Komatsu truck will adjust through a tilt angle to provide
the most comfortable wheel position for all operators.
Tilt angle is adjusted by pulling the tilt lever (3, Figure
5-1) toward the steering wheel and moving the wheel
to the desired position. Releasing the lever will lock the
wheel in one of five positions.
The steering column also contains a directional signal
flasher control lever (2) combined with a headlight high
and low beam selector switch. A right turn is signaled
by raising the lever, and a left turn by lowering the
lever. Indicator lights located above the speedometer
and tachometer will flash to indicate the turn direction
selected. To select the headlight low beams, pull the
lever (2) toward the steering wheel. To select high
beams, pull the lever again. An indicator light mounted
between the turn indicators will illuminate when high
beams are selected. The horn is controlled by pressing
the button in the center of the steering wheel.
FIGURE 5-1. STEERING COLUMN INSTALLATION
1. Steering Column
5. Steering Control Valve
2. Turn Signal/Dimmer
6. Shaft
3. Tilt Lever
7. Capscrews & Washers
4. Access Cover
8. Seal & Retainers
N05044
OPERATOR CAB CONTROLS
Removal
Installation
Operator Cab Controls
1. Shut down the engine by turning the key switch
"Off" and allow the steering accumulators to
bleed down. Allow at least 90 seconds for bleed
down. Turn the steering wheel to ensure no pres-
sure remains.
2. Open the battery disconnect switches.
3. Remove the access cover (4, Figure 5-1) from the
front of the cab.
4. Disconnect the wire harness from the steering
column at the connector.
5. Remove screws retaining seal retainer plates (8)
where steering column enters the instrument
panel. Remove both retainer plates.
6. Remove the four capscrews and washers (7) at
the mounting bracket. (Access to these cap-
screws is from outside the cab, through the ac-
cess opening.)
7. Lift the steering column to disengage the column
from the steering shaft (6), and lift out of the
instrument panel.
1. With the steering column tilted at approximately
45°, insert the lower end of the column into the
opening in the instrument panel.
2. Position the steering shaft (6) on the steering
control valve (5) and align the splines with the
steering column shaft splines.
3. Position steering column mounting holes over
tapped holes in mounting bracket and in align-
ment with steering control valve.
4. Install four capscrews (7), lockwashers, and hard-
ened flat washers through steering column
mounts. Tighten to 25 ft. lbs. (33.9 N.m) torque.
Check for proper steering wheel rotation without
binding. If binding occurs, realign column by loos-
ening mounting capscrews and adjusting column
in the slotted mounting holes.
5. Position the steering column seal (8) and install
the seal retainer halves.
6. Connect the column wire harness to the instru-
ment panel harness.
7. Reinstall access cover on front of cab and close
battery disconnect switches.
N5-1
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Troubleshooting
