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Page Title:
Table I. Speeds and distances for break-in run |
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|  MIL-T-62222(AT)
TABLE I. Speeds and distances for break-in run.
Speed
Distance
Test
Division of run
mph
miles
conditions
a......
Track (road)
10
0 to 10
b......
Track (road)
15
11 to 15
c......
Track (road)
10
16 to 20
d......
Track (road)
10
21 to Max.
3.4 Physical characteristics.
3.4.1 Sealing. Unless otherwise specified, all seals and sealer shall prevent the entrance of
water and foreign matter. Static seals shall provide an interference fit of sealing surfaces
preventing the loss of leakage of fluids intended to contained by the seals. Dynamic seals shall
prevent fluid leakage in the form of a drip (see 6.5.1) when the vehicle is standing idle.
Evidence of lubricant at seals specifically designed to allow exit of flushed lubricants shall be
permitted (see 4.6.2.1).
3.4.1.1 Hatch seals. Hatch seals shall prevent leakage of water into the crew compartment
(see 4.6.2.1.1).
3.4.1.2 Vision device and receptacle seals. When installed, the driver's, gunner's, and
commander's periscopes shall be sealed to prevent any entry of water into the vehicle. The
driver's infrared (IR) periscope shall not permit water entry in excess of a continuous drip
(see 6.5.1) into the vehicle (see 4.6.2.1.1 and 4.6.2.1.2).
3.4.2 Hydraulic lines. Provisions shall be made to assure internal cleanliness of hydraulic
lines and connections. Brake hydraulic lines and connections shall be free from leakage in the
form of a drip (see 6.5.1) (see 4.6.3).
3.4.3 Ventilation system.
3.4.3.1 Vent blower. The vent blower shall pressurize the air inside the occupied areas of
the vehicle (see 4.6.4.1).
3.4.3.2 Carbon monoxide. The ventilation system shall prevent harmful accumulations of
carbon monoxide (CO) in the occupied areas of the vehicle. The concentrations of CO shall not
exceed the percentage levels as indicated below throughout the respective time periods specified
in table II (see 4.6.4.2).
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