KNOWN INFO
TEST OPTIONS
Visual Inspection
NO
YES
6.
Go to step 7
of this fault.
If air is present, air hose(s) 504
and/or 505 is faulty.
Is air present at cab leveling
valve output ports?
Replace air hose(s) 504
and/or 505 (para 23-3).
CTIS operates.
Air hoses free from kinks and
leaks.
Variable control check valve
OK.
Air hose 503 OK.
Air spring cylinders 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 hose(s) 504 and/or
505.
TM 9-2320-365-20-2
2-1974.6 Change 1
t3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)
REASON FOR QUESTION