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 input port?

If air is present, cab leveling

Variable control check valve

valve is faulty.

OK.

Air hose 503 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.

Go to step 8

Faulty pressure protection

YES

of this fault.

valve.

Faulty air hose 501.

Faulty cab leveling valve.

Replace cab leveling

valve (para 16-8).

2-2234.8

Change 1