KNOWN INFO
CTIS operates.
Air hoses free from kinks and
leaks.
Variable control check valve
OK.
Air hose 503 OK.
Air hose 522 OK.
Cab leveling valve tee
fitting OK.
Air hose 506 OK.
Air/hydraulic manifold OK.
Pressure protection valve OK.
Air hose 501 OK.
POSSIBLE PROBLEMS
TEST OPTIONS
Visual Inspection
NO
YES
13.
Is air present at cab leveling
valve input ports?
If air is present, cab leveling
valve is faulty.
Go to step 14
of this fault.
Replace cab leveling
valve (para 16-8).
Faulty cab leveling valve.
Faulty air spring cylinder(s).
Faulty air hose(s) 504 and/or
505.
TM 9-2320-365-20-2
2-1974.20 Change 1
t3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)
REASON FOR QUESTION