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 · The CTI system initially and periodically checks for system air leaks.  The CTIS will display a flashing LOW AIR light and shut off if 6 psi cannot be maintained by the CTI system The manifold will click during this test for approximately 1 5 minutes · Excessive inflation times (without low air light) are caused by minor leaks in CTI system. · CTIS air lines are pressurized only when CTIS is in inflate, deflate, or test cycles · Tests 1 thru 5 can be made consecutively while the CTI system is in the inflate cycle · Normal inflation time from EMERGENCY to HIGHWAY setting is approximately 12 minutes at high idle. · Excess Inflation times, sometimes accompanied by a LOW AIR light is normal if engine is at idle RPM and/or air operated accessories are being used. · Soap solution may be used to detect air leaks (1) Deflate tire to 60 psi (414 kPa or less (2) Start engine (TM 9-2320-360-10). (3) Set CTIS controller selector to HIGHWAY position (TM 9-2320-360-10). (4) Move CTIS switch to ON position and/or push start button (TM 9-2320-360-10). (5) Check air line no 2100 from reservoir to supply port for air leaks, damage, or crimps (6) 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 9-2320360-10) (3) Move CTIS switch to ON position and/or push start button (TM 9-2320-360-10) (4) Check exhaust air line no 2120 from porting block for air escaping (5) Shut off engine (TM 9-2320-360-10). Change 1  2-817