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 check valve

If air is not present, cab

Variable control check valve

output port?

leveling valve tee fitting. If air

OK.

is present, air hose 503 is

Air hose 522 OK.

faulty.

Air hose 506 OK.

Air/hydraulic manifold OK.

Pressure protection valve OK.

Air hose 501 OK.

Cab leveling valve OK.

Air spring cylinders OK.

Air hoses 504 and 505 OK.

POSSIBLE PROBLEMS

Faulty air hose 503.

Faulty cab leveling valve tee

Replace cab leveling

fitting.

YES

valve tee fitting (para 16-8).

Replace air hose

503 (para 23-3).

2-2234.2

Change 1