CAB LEVELING AIR SPRINGS DO NOT OPERATE (CONT)

TM 9-2320-366-20-3

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

TEST OPTIONS

KNOWN INFO

Visual Inspection

CTIS operates.

REASON FOR QUESTION

Is air present at air spring

Air hoses free from kinks and

cylinder input ports?

leaks.

If air is present, air spring

Variable control check valve

cylinder(s) is faulty.

OK.

Air hose 503 OK.

POSSIBLE PROBLEMS

Faulty air hose 522.

Faulty cab leveling valve tee

fitting.

Faulty air hose 506.

Faulty air/hydraulic manifold.

Faulty pressure protection

valve.

Faulty air hose 501.

Faulty cab leveling valve.

Faulty air spring cylinder(s).

Go to step 6

Faulty air hose(s) 504 and/or

YES

of this fault.

505.

Replace air spring

cylinder(s) (para 16-9).

2-2234.4

Change 1