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|  MIL-T-45379D(AT)
4.6.4.5 Turning. To determine conformance to 3.5.5, the vehicle shall be operated and
turned to the right and to the left in full 360 pivot turn in neutral steer and checked for
functional requirements. During this test, the vehicle shall be brought to a full stop before
reversing the turning direction. The full turns shall be accomplished within a 35-foot diameter
circle.
4.6.4.6 Fording.
4.6.4.6.1 Shallow water. To determine conformance to 3.5.6.1, the chassis shall be driven
into water of specified depth with the engine compartment drain valve open and without special
equipment. During and after this period, water accumulation in the crew compartment hull floor
shall not be more than specified depth. After water fording, verify that there is no water
accumulation in the right or left brake housings.
4.6.4.6.2 Deep water. To determine conformance to 3.5.6.2, verify that the following deep
water fording features of the vehicle function and conform to applicable drawings:
a.
Bilge pump, switch, and indicator light operational.
b.
Bilge hose, outlet valve and attaching hardware are as specified.
c.
Right fuel tank properly vented into the air cleaner outlet elbow.
d.
Air cleaner intake ducts are reversible from the crew compartment side of the
bulkhead.
e. Exhaust snorkel mounting faces on engine rear exhaust doors.
When a deep water fording kit is specified for the vehicle (see 6.2), a fording kit shall be
installed and the vehicle driven into a hard bottom body of water 8 ft in depth and held at that
depth for 30 minutes, with the bilge pump operating as required. The accumulation of water
shall be checked and shall be not more than 3 inches in the crew compartment hull floor in the
center of the "V". After deep water fording, verify that there is no water accumulation in the
right or left brake housings.
4.6.4.6.3 Engine starting in shallow water. Conformance to the starting requirements of
3.5.6.3, shall be checked in conjunction with shallow water fording of 4.6.4.6.1. The engine
shall be idled at 1000 rpm for 15 minutes, be stopped, and restarted in not more than 3 minutes
with all accessories functioning satisfactorily during and after test.
4.6.4.6.4 Shallow water contamination. To determine conformance to 3.5.6.4, the vehicle,
after water fording test, shall be examined for contamination of lubricants of the transmission,
engine, final drive, and roadwheels 2, 3, 4, and 5 and one of their corresponding arms, on each
side of the vehicle. Contamination shall not exceed two percent by volume.
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