KNOWN INFO
TEST OPTIONS
YES
NO
11.
If air is present, air/hydraulic
manifold is faulty.
Repair or replace air/hydraulic
manifold (para 19-4).
Go to step 12
of this fault.
Is air present at air/hydraulic
manifold AIR IN B port?
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.
Cab leveling valve OK.
Air spring cylinders OK.
Air hoses 504 and 505 OK.
POSSIBLE PROBLEMS
Faulty air/hydraulic manifold.
Faulty pressure protection
valve.
Faulty air hose 501.
TM 9-2320-365-20-2
2-1974.16 Change 1
t3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)
Visual Inspection
REASON FOR QUESTION