(1) Start engine (TM 9-2320-364-10).
(2) Set CTIS controller to HIGHWAY.
(3) Press CTIS START button.
(4) Check CTIS wheel valves for air
(a) If wheel valve is damaged or
leaking air, perform Step (5)
below and repair or replace
wheel valve (Para 13-11).
(b) If there are no leaks or damage,
wheel valve is OK.
(5) Turn OFF ENGINE switch.
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.
Tires must be deflated to 60 psi
(414 kPa) or less to perform this
Some air leakage may occur at
breather during inflation/deflation
cycles. Rapid exhaust of air at
breather indicates a faulty valve.