MIL-DTL-62270B(AT)
4.7.1.12 Controls instruments and adjustment mechanisms test. The controls and
instruments shall be observed for proper function during mobile test operations. After mobile test
operations, adjustment mechanisms shall be examined for adjustment maintenance.
4.7.1.13 Generator and blower tests. One or more methods specified in 4.4 shall be used
to verify that the generator maintains a regulated voltage of 28 + 2.2V, with the engine running at
various speeds. Air flow to the generator shall be observed for continuous flow.
4.7.1.14 Air cleaner blower test. One or more methods specified in 4.4 shall be used to
verify that, with engine running, all air outlets shall be function with continuous air flow. Further,
air flow shall show that air flow stops when the engine is stopped.
4.7.1.15 Lights. One or more methods specified in 4.4 shall be used to verify that the
lights shall be functioning and in working order. Should the lights not work in the specified
conditions, this shall be rejected.
4.7.1.16 Hull drain valves test. One or more methods specified in 4.4 shall be used to
verify that the drain valve levers shall be unlocked and the force required to open the valves shall
not exceed 17 lb and shall travel no less than 0.38 in. The force required to operate the rear drain
shall not exceed 25 lb and shall travel no less than 0.69 in. Effort shall not exceed the requirement
for each valve.
CAUTION: Valves shall be closed and locked after test.
4.7.1.17 Escape hatch release test. One or more methods specified in 4.4 shall be used to
verify that the force required to release the hatch locking device shall be 50 + 10 lb and shall be
pulled at a point 0.5 in. from the end of the handle.
4.7.1.18 Operator seat test. One or more methods specified in 4.4 shall be used to verify
that with an average weight person (180 lb nominal) in the seat, the force required to actuate the
vertical (when vacated) and seat dumping levers shall be no more than 14 lb. The force required
to move fore and aft shall not exceed 12 lb. A person in-seat is only required for the fore and aft
adjustment test. Should any of these specified forces are exceeded, this shall constitute for
rejection.
4.7.1.19 Fuel shut-off test. The engine shall be operated at 50% of governed rpm, the
manual shut-off valve shall be actuated to the "OFF" position. Verify that the time required for
the engine to stop shall be no longer than 30 seconds. The fuel valve shall be returned to "ON"
position and the system primed and bled of air.
4.7.1.20 Fire extinguisher. With the engine idling at 700 to 800 rpm, the internal control
shall be pulled with a force gage. The first shot shall actuate one bottle. The force needed to
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