TOPIC 3. STEERING WHEEL AND COLUMN

TM 10-3930-644-14&P

TOPIC 3. STEERING WHEEL AND COLUMN

A. DESCRIPTION

1. Disconnect battery terminals.

Although the steering wheel and column are similar to

standard steering systems, the power steering system

2. Remove the floor and toe plates.

incorporates a hydraulically operated steer control unit

instead of the usual steer gear box. (Figure 5.)

3. Disconnect the hydraulic lines from the steer

control unit.

Tag hydraulic lines for

identification.

NOTE

All hydraulic lines should be plugged

immediately

after

they

are

disconnected to prevent dirt from

entering the system.

4. Disconnect the horn wires from column.

5. Remove the capscrews that hold the steer unit

to the stationary bracket.

6. Lift the steer gear up and out of the vehicle and

place in a clean working area.

NOTE

Figure 5. Power Steer Assembly

Refer to REPAIR MANUAL for

DISASSEMBLY,

INSPECTION,

When the steering wheel is turned in either direction,

REPAIR and REASSEMBLY.

hydraulic fluid is channelled through the appropriate

control unit ports, thus pushing or pulling the drag link,

D. INSTALLATION

which controls direction of wheels.

1. Place the-steer gear control unit in Its r lative

B. STEERING COLUMN ADJUSTMENT

mounting location at end of steering column and

insert and tighten securing capscrews.

Proper alignment the steering column is very important.

The column must not be sprung in any direction from its

2. Reconnect the horn wires.

free position. To determine whether or not misalignment

exists, release the upper column support and note

3. Unplug and connect the hydraulic lines to steer

whether column moves to a different position-its free

unit as they were removed.

position. If it does move, then it has been out of line and

should be clamped in proper position.

or position

4. Ensure that reassembly is complete, then

corrected at mounting bracket on truck. If column has

replace the floor and toe plates.

been bent permanently because of severe misalignment,

then replacement of the tube, shaft, or entire unit may be

5. Reconnect the battery terminals.

necessary.

If the steering system requires adjustment, refer to

C. REMOVAL

Paragraph D in preceding Topic 2.

The following procedure is recommended for proper

steer control unit removal:

TOPIC 4. DRAG LINK

Refer to POWER STEER CYLINDER TOPIC for

REMOVAL and INSTALLATION.

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