TEST OPTIONS
Visual Inspection
KNOWN INFO
Go to step 6
of this fault.
NO
5.
YES
Is air present at air spring
cylinder input ports?
If air is present, air spring
cylinder(s) is faulty.
Replace air spring
cylinder(s) (para 16-9).
CTIS operates.
Air hoses free from kinks and
leaks.
Variable control check valve
OK.
Air hose 503 OK.
POSSIBLE PROBLEMS
Faulty air hose 522.
Faulty cab leveling valve tee
fitting.
Faulty air hose 506.
Faulty air/hydraulic manifold.
Faulty pressure protection
valve.
Faulty air hose 501.
Faulty cab leveling valve.
Faulty air spring cylinder(s).
Faulty air hose(s) 504 and/or
505.
TM 9-2320-365-20-2
2-1974.4 Change 1
t3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)
REASON FOR QUESTION
