BOOM DOES NOT RAISE OR RAISES SLOWLY. (Cont) -726250682

TM 9-2320-364-34-1

14. BOOM DOES NOT RAISE OR RAISES SLOWLY (CONT).

KNOWN INFO

TEST OPTIONS

WARNING

Read WARNING

Are

Flowmeter test.

Unit Troubleshooting

on Page 2-599

0 gpm

tasks completed.

REASON FOR QUESTION

Boom lowers.

(0 lpm)

Four valve bank OK.

measured

If piston seals are faulty in

at four valve bank with boom

cylinder that is active (not

POSSIBLE PROBLEMS

lift cylinder on OSS side of

isolated from circuit), more than

0 gpm (lpm) will be measured. If

boom isolated from (discon-

Lift cylinder faulty.

piston seals are faulty in cylinder

nected) other boom cylinder?

that is isolated from

(disconnected) circuit, 0 gpm

(lpm) will be measured.

Replace cylinder not

on OSS side of boom

(Para 16-6).

Verify repair, go to

Step 6 of this Fault.

YES

Replace cylinder on

OSS side of boom

(Para 16-6).

Verify repair, go to

Step 6

of this Fault.

2-598