(1) Start engine (TM 9-2320-364-10).
(2) Set CTIS controller selector to
(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
(b) If there are no air leaks or
damage, wheel valve is OK.
(5) Turn OFF ENGINE switch.
(6) Install wheel cover with four nuts.
Wear safety goggles when performing leakage test 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 test.
Some air leakage may occur at breather
during inflation/deflation cycles. Rapid
exhaust of air at breather indicates a faulty