TM 9-2320-364-20-3 2-1920 1.  ONE TIRE WILL NOT INFLATE OR DEFLATE (CONT). 3. Replace wheel valve (Para 13-11).   Verify repair, go to Step 6 of this Fault. YES NO Air system is OK. CTIS is OK. CTIS air lines and fittings   from axle manifold to axle   spindle OK. CTIS air lines and fittings   from wheel hub to wheel   valve OK. CTIS air lines from wheel   valve to tire OK. Wheel valve leaking. Wheel valve faulty. Wheel/Tire assembly faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Audible inspection. Visual inspection. If wheel valve is leaking a high volume of air, tire will not inflate or deflate properly. 4. Replace wheel valve (Para 13-11).   Verify repair, go to Step 6 of this Fault. YES NO Air system is OK. CTIS is OK. CTIS air lines and fittings   from axle manifold to axle   spindle OK. CTIS air lines and fittings from   wheel hub to wheel valve OK. CTIS air lines and fittings from   wheel valve to tire OK. Wheel valve not leaking. Wheel valve faulty. Wheel/Tire assembly faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Pressure test. If inflate or deflate pressure is measured at tank valve and tire does not inflate or deflate, wheel valve is faulty. WARNING Is wheel valve free from leaks? Is inflate or deflate pressure measured at tank valve on wheel valve when CTIS is activated? Read   WARNING on Page 2-1921