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Driver's night viewer power circuit |
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|  MIL-T-45379D(AT)
3.3.17.6 Alternator voltage. With the engine operating at 1000 revolutions per minute
(rpm), the vehicle alternator shall deliver between 26.8 and 30.2 V at the battery, over an
ambient temperature range of minus 65 to plus 125F. The battery voltage shall be not less than
18.5 V when the hydraulic power pack is energized (see 4.6.2.17.6).
3.3.17.7 Driver's night viewer power circuit. The voltage output at the driver's night viewer
connector shall be within 0.2 V of the positive battery potential when operating into a 1 ampere
(A) load (see 4.6.2.17.7).
3.3.17.8 Air cleaner blower motors. Each air cleaner blower motor shall provide a flow of
air through each blower outlet. The air cleaner blower motors shall be wired so they do not
operate unless the engine is running (see 4.6.2.17.8).
3.3.17.9 Engine manifold heater. The vehicle wiring for the engine manifold heater shall
provide a switch-actuated vehicle battery circuit to the engine. Operation of the pushbutton
switch on the purge pump handle, with the starter switch depressed, shall provide vehicular
battery voltage to pin "A" of the multiple connector at the engine electrical quick disconnect (see
4.6.2.17.9).
3.1.17.10 Auxiliary outlet. Two outlets [24 V direct current (dc) nominal], one each in the
turret and hull, shall be provided which will mate with the BII trouble light assemblies. Each
auxiliary outlet circuit shall be protected with a 15 A automatic reset circuit breaker
(see 4.6.2.17.10).
3.3.17.11 Personnel heater. The heater shall be capable of starting with the switch in either
high or low position. The blower motor shall operate at reduced speed when the heater is turned
on. The burner shall ignite within 4 minutes of heater turn on. Subsequent to ignition, the heater
shall be capable of generating high and low heat, and the blower motor shall run at full speed.
Turning the heater OFF shall cause both the burner to extinguish and the blower motor to shut
off within 3.5 minutes (see 4.6.2.17.11).
3.3.17.12 Engine smoke generator. The vehicle shall produce smoke in the left and right
exhaust pipes when the engine is running and the smoke generator switch is in the ON position
(see 4.6.2.17.12).
3.3.18 Communications system. Requirements for a communications system are as follows
(see 4.6.2.18):
a. An AN/VIC-l (V) intercom set shall be installed and shall be functional for crew
communications.
b. Provisions shall be available for the installation of an AN/VRC radio set which shall
operate through the intercom set.
3.4 Break-in. The vehicle shall meet the requirements specified herein subsequent to a
break-in run. The break-in run will include preliminary checks of suspension, controls,
powerpack, etc., and provide wear-in for final adjustments. The break-in run will involve the
following activities and conditions (see 4.6.3).
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