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|  MIL-H-62185(AT)
4.5.1.20 Shallow water fording test. To determine conformance to 3.6.11.1, the vehicle
shall be driven into water of specified depth, without special equipment. Water accumulation
shall not exceed specified depth in hull bottom after 15 minutes of fording operation. The engine
shall idle at 1000 rpm for 15 minutes, be stopped, and shall restart in not more than 3 minutes
with all accessories functioning satisfactorily during and after fording.
4.5.1.21 Cab control system tests.
4.5.1.21.1 Cab traversing speed test. To determine conformance to 3.6.14.1.2, by use of the
gunner and commander's power controls, the cab shall be traversed clockwise and
counterclockwise as specified, and the transition, maximum velocity, and stability of cab
observed. The accumulator shall be fully charged prior to beginning the maximum speed test.
Maximum traverse speed shall be measured after allowing the cab to accelerate approximately
400 mils from stop. The first revolution of the cab after this acceleration shall be accomplished at
the specified rate.
4.5.1.21.2 Manual traverse effort check. To determine conformance to 3.6.14.1.3, the
specified average force applied tangentially to the traverse handcrank shall not exceed that
specified.
4.5.1.21.3 Manual traverse response rate check. To determine conformance to 3.6.14.1.4,
with the traverse mechanism in high range, the response shall not exceed that specified, and when
in low range the response shall not exceed that specified.
4.5.1.21.4 Weapon slope operation check. To determine conformance to 3.6.14.1.5, the
vehicle shall be checked for functional requirements.
4.5.1.21.5 Hydraulic pressure limits switch test. To determine conformance to 3.6.14.1.6,
the cab shall be traversed as specified and the system pressure gage observed for specified
pressure as the power pack motor cuts in. With power pack motor running and the controls in
their neutral position, the power pack motor shall cut at the specified system pressure.
4.5.1.22 Weapon control system tests.
4.5.1.22.1 Elevation system protection check. To determine conformance to 3.6.14.2.1,
with the gun mount driven against stops, the control system shall be checked for damage.
4.5.1.22.2 Elevation and depression limits and time check. To determine conformance to
3.6.14.2.2, the gun mount shall be operated throughout elevation and depression ranges and
checked for specified limits.
4.5.22.3 Control transfer check. To determine conformance to 3.6.14.2.3, with controls
operated as specified, the control shall take control of weapon as specified.
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