MIL-T-45379D(AT)
4.6.2 Design and construction. To determine conformance to 3.3, a visual, dimensional, and functional inspection shall be performed to determine if the vehicle has been constructed to the installations defined on Drawings 8750019. A walk-around inspection of the outside and inside of the vehicle shall be performed and the results entered in the FIR. Record all deficiencies. Visually examine all components for condition, mounting, location, clearance, etc. Manually operate all items where practical.
4.6.2.1 Sealing. Conformance to 3.3.1 shall be determined at various stages of acceptance inspection.
4.6.2.1.1 Hatch seals. To determine conformance to 3.3.1.1 all entry hatches shall be closed and locked and 3 gallons of water sprayed on each hatch over a 3 minute period. All entry hatches shall be checked for leakage. The driver's escape hatch shall be checked in conjunction with 4.6.4.6.1.
4.6.2.1.2 Vision devise/receptacle seals. To determine conformance to 3.3.1.2, the driver's, gunner's and commander's periscopes, and all vision blocks shall be checked for leakage in conjunction with 4.6.2.1.1.
4.6.2.2 Hydraulic lines. To determine conformance to the requirements of 3.3.2, after all
road testing, the vehicle shall be given a thorough examination for hydraulic leaks. Any drip that occurs when vehicle has been standing idle with the components at ambient temperature or any leak at a static fit, metal-to-metal, or gasket combination shall constitute failure to comply.
4.6.2.3 Ventilation system. To determine conformance to 3.3.3, an inspection specified below shall be performed as applicable.
4.6.2.3.1 Vent blower. Conformance to 3.3.3 shall be determined during acceptance inspection by observing the operation of the vent blower while performing road tests and when the vehicle is idling.
4.6.2.3.2 Contamination level. To determine conformance 3.3.3 tests shall be conducted in accordance with the procedure specified in USA TECOM Material Test Procedure 2-2-614, dated 18 June 1968, except as follows:
a. Firing tests shall be conducted with the ventilation system and engine operating, and all hatches closed.
b. 105mm gun firing contamination levels shall be determined for one 3-round salvo for each type of ammunition designated for 105mm weapon.
c. Secondary weapon contamination levels shall be determined for one 220-round burst fired from each vehicle machine gun simultaneously.
CAUTION: WHEN CONDUCTING THESE TESTS, SAFETY PRECAUTIONS SHALL BE EXERCISED.
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