OPERATION UNDER UNUSUAL CONDITIONS--Continued
Maintain proper tire pressure by doing the following:
Reduce tire pressure to 32 psi (221 kPa) for operation in soft sand.
Reduce tire pressure to 45 psi (310 kPa) for operation on cross-country terrain. Tire pressure
must be returned to 95 psi (655 kPa) when operation resumes on hard-surface roads if tactical
When uncoupling semitrailer in sandy areas, use ground boards to prevent landing gear from
Maximum fording depth is 30 in. (76 cm).
M969A3 semitrailer is designed for fording hard bottom water crossings deep enough to submerge
the running gear.
Refer to the towing vehicle operating instructions for information on fording. Instructions for the
towing vehicle also apply to the semitrailer.
Before entering water, spray the engine assembly electrical connections with silicone compound
(item 6, WP 0174 00). Notify Organizational maintenance to pack wheel bearings after each
submersion (refer to WP 0068 00).
Reduce tire pressure to aid in amphibious landings.
END OF TASK
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