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

Visual Inspection

CTIS operates.

REASON FOR QUESTION

Air hoses free from kinks and

Is air present at cab leveling

leaks.

valve tee fitting output port?

If air is present, air hose 522

Variable control check valve

is faulty.

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.

Go to step 9

Faulty air/hydraulic manifold.

YES

of this fault.

Faulty pressure protection

valve.

Faulty air hose 501.

Replace air hose

522 (para 23-3).

2-2234.10

Change 1