TM-9-2320-343-10

TRUCK, CARGO, 8X8 M985A4 W/WINCH AND M985A4 W/O WINCH

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-343-10 - Page 715 of 1128

OPERATOR MAINTENANCE

BOOM RAISES OR LOWERS SLOWLY

INITIAL SETUP:

Equipment Condition

Vehicle setup for crane operations.

(WP 0038)

TROUBLESHOOTING PROCEDURE

BOOM RAISES OR LOWERS SLOWLY

TEST 1 - Does boom raise or lower normally after running engine for 20 minutes with

PTO engaged?

NOTE

Common problems that crane operators may see are:

1.

Slow or abnormal operation.

2.

Crane will not pick up load.

Common causes of problems are:

1.

Cold hydraulic fluid (slow operation).

2.

Low engine speed (slow or abnormal operation).

3.

Operating two craning functions at the same time (slow operation).

4.

Load too heavy (will not pick up load).

5.

Air in cylinder or hoist motor (abnormal operation).

Report all problems to organizational maintenance.

If outside temperature is 0°F (-17°C), hydraulic fluid may not flow easily.

1.

Start engine. (WP 0044)

2.

Set HYD ENABLE switch to ON. (WP 0038)

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