CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)

TM 9-2320-366-20-3

u3. CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)

KNOWN INFO

TEST OPTIONS

12.

Visual Inspection

CTIS operates.

REASON FOR QUESTION

Air hoses free from kinks and

Is air present at pressure

leaks.

protection valve output

If air is not present, pressure

Variable control check valve

port?

protection valve is faulty. If air

OK.

is present, air hose 501 is

Air hose 503 OK.

faulty.

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.

Air/hydraulic manifold OK.

POSSIBLE PROBLEMS

Faulty pressure protection

valve.

Faulty air hose 501.

Replace pressure protection

YES

valve (para 11-29).

Replace air hose

501 (para 23-3).

2-2234.18

Change 1