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Page Title: PRESSURE TEST
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TM 9-2320-364-20-3      2-1921 (1)   Check wheel valve for air leaks (a) If wheel valve is leaking, turn OFF ENGINE switch and replace wheel valve (Para 13-11). (b) If there are no leaks, wheel valve is OK. (2)   Turn OFF ENGINE switch. AUDIBLE/VISUAL INSPECTION Wear safety goggles when performing leakage tests on valves.  Failure to do so may result in serious eye injury due to high pressure air. Exercise extreme caution when working around wheels or under truck while engine is operating. Movement of truck may cause injury or death to personnel. High air pressure will be released from valve stem when valve core is removed.  Stay clear of valve stem after core is removed.  Ensure all personnel wear suitable eye protection.  Failure to comply may result in injury to personnel. (1)   Remove valve cap from valve stem. (2)   Position air pressure gage on valve stem. (3)   Start engine (TM 9-2320-364-10). (4)   Position CTIS controller to HIGH- WAY setting. (5)   As assistant presses CTIS start button, observe air gage. (a) If there is no increase in air pressure, perform Steps (8) and (9) below and replace wheel valve (Para 13-11). (b) If there is an increase in air pressure, go to Step (6) below. (6)   Set CTIS controller to CROSS COUNTRY. (7)   As assistant presses CTIS start button, observe air gage. (a) If there is no decrease in air pressure, perform Steps (8) and (9) below and replace wheel valve (Para 13-11). (b) If there is a decrease in air pressure, wheel valve is OK. (8)   Turn OFF ENGINE switch. (9)   Remove air gage. (10)   Install valve cap on valve stem. PRESSURE TEST Some air leakage may occur at breather during inflation/deflation cycles.  Rapid exhaust of air a breather indicates a faulty valve. NOTE

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