TM 9-2320-360-20-1 WARNING · Exercise extreme caution when working around wheels or under truck while engine Is running. Movement of truck may cause severe Injury or death. · Wear safety goggles when performing leakage tests on valves air hoses.  Failure to comply may cause serious eye injury due to high air pressure. NOTE Tire must be deflated to 60 psi (414 kPa) or less to perform this test (1) Start engine (TM 9-2320-360-10). (2) Set CTIS controller selector to HIGHWAY position (TM 9-2320-360-10). (3) Move CTIS switch to ON position and/or push start button (TM 9-2320-360-10). (4) Check CTIS tubes from wheel valve to tire for air leaks, damage, or crimps. (5) Shut off engine (TM 9-2320-360-10). NOTE · Tire must be deflated to 60 psi (414 kPa) or less to perform this test. · Some air leakage may occur at breather during inflation/deflation cycles. (1) Start engine (TM 9-2320-360-10). (2) Set CTIS controller selector to HIGHWAY position (TM 9-2320-360-10) (3) Move CTIS switch to ON position and/or push start button (TM 9-2320-360-10). (4) Check CTIS wheel valves for air leaks or damage (5) Shut off engine (TM 9-2320-360-10). NOTE Tire must be deflated to 60 psi (414 kPa)  or less to perform this test. (1) Start engine (TM 9-2320-360-10). (2) Set CTIS controller selector to HIGHWAY position (TM 9-2320-360-10). (3) Move CTIS switch to ON position (TM 9-2320-360-10). (4) Check CTIS power manifold casting and mounting base area for air leaks. (5) Shut off engine (TM 9-2320-360-10). Change 3  2-847