KNOWN INFO
TEST OPTIONS
Visual Inspection
NO
YES
Go to step 9
of this fault.
8.
Is air present at cab leveling
valve tee fitting output port?
Replace air hose
522 (para 23-3).
If air is present, air hose 522
is faulty.
CTIS operates.
Air hoses free from kinks and
leaks.
Variable control check valve
OK.
Air hose 503 OK.
Cab leveling valve OK.
Air spring cylinders OK.
Air hoses 504 and 505 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.
TM 9-2320-365-20-2
2-1974.10 Change 1
t3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)
REASON FOR QUESTION
