TM 9-2320-365-20-2
2-1776
NO
YES
5.
Is relief valve on
manifold valve assembly
operating?
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Air hoses from wet tank
to manifold valve
assembly OK.
Air compressor and
governor adjustment OK.
Wheel valves venting OK.
Relief Valve Test
A damaged relief valve
may cause continual air
loss and prevent proper
inflation of tires for CTIS
mode.
Faulty manifold valve
assembly relief valve.
Faulty manifold valve
assembly.
Faulty quick release
valve(s).
Faulty rear axle quick
release valve fittings.
Faulty front quick
release valve fittings.
Faulty front tee fittings.
Faulty manifold valve
assembly delivery port
fittings.
Faulty cab floor supply
hose fittings.
Faulty supply hoses from
quick release valve(s) to
wheel valve(s).
Faulty wheel valve filters.
Faulty electrical connections
at CTIS ECU and manifold
valve assembly.
Faulty ECU.
Replace relief valve
(para 12-7).
m1. TWO STEADY MODE LIGHTS ILLUMINATE ON CTIS ECU (CONT)