KNOWN INFO
POSSIBLE PROBLEMS
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.
Cab leveling valve OK.
Faulty air spring cylinder(s).
Faulty air hose(s) 504 and/or
505.
TEST OPTIONS
Visual Inspection
NO
YES
14.
Is air present at air spring
cylinder output ports?
If air is present, air hose(s) 504
and/or 505 is faulty. If air is
not present, air spring
cylinder(s) is faulty.
Replace air spring
cylinder(s) (para 16-9).
Replace air hose(s)
504 and/or 505 (para 23-3).
TM 9-2320-365-20-2
2-1974.22 Change 1
t3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)
REASON FOR QUESTION