TM 9-2330-381-14
2-21.
OPERATING MANUAL STEERING (CONT)
c. Pull out handle of suspension shut-off valve (4) to ADJUST position (para. 2-6).
NOTE
The brakes on the semitrailer should be released when making steering
adjustments. If the brakes are not released, steering adjustments will be much
slower and harder to accomplish.
d. Release parking brakes by one of the following methods:
(1) With tractor/semitrailer coupled, apply tractor parking brake and push in knob of brake release valve (5) to
release semitrailer parking brake.
(2) If uncoupled, push in knob of brake release valve (5).
CAUTION
If the tractor/semitrailer is uncoupled, manual steering may be used ONLY to move
the steering wedge; however, manual steering of the wheels must not be
attempted. Manual steering without being coupled to a tractor may cause the
steering arm to move to an extreme over-center position, which can be extremely
difficult to recover, and can cause damage to equipment.
e. Ensure that semitrailer is coupled to tractor (para. 2-26) and steering wedge is secured/tight in tractor fifth wheel
vee entry.
CAUTION
Wheel chocks must be moved away from tires prior to adjusting steering or
damage to chocks and tires may result.
f. Move all four wheel chocks (6) approximately 6 inches (15 cm) away from tires prior to adjusting steering.
g. Push down handle of steering valve (7) to turn steerable bogies to the left. Once bogies turn completely left and
stop, release handle of steering valve (7).
h. Pull up handle of steering valve (7) to turn steerable bogies to the right. Once bogies turn completely right and
stop, release handle of steering valve (7).
i. Operate steering valve (7) and return steerable bogies to approximately straight position (in line with kingpin,
facing forward).
j. If no other adjustments are required, proceed as follows:
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