TM-9-2320-272-10

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; OPERATOR'S MANUAL

SEPTEMBER 2004

CHANGE 2

TM-9-2320-272-10 - Page 239 of 481

TM 9-2320-272-10

2-24. OPERATION OF MEDIUM WRECKER (Contd)

2-138

(13)

For heavy rear lift:

NOTE

This operation requires use of front outriggers.

(a)

Perform steps 1 through 9.

(b)

Slightly pull boom control lever (2) back to UP to take boom (1)

weight off shipper braces (8).

(c)

Remove retaining clips (11) form L-shaped shipper brace retaining

pins (9) and remove retaining pins (9) from shipper brackets (8).

(d)

Swing shipper braces (7) upward to brace retaining brackets (5) on

each side of shipper (6). Secure braces (7) on brackets (5) with retaining clips (10).

(e)

Push boom control lever (2) forward to DOWN to lower boom (1) to

horizontal position.

CAUTION

When extending boom, move HOIST and CROWD levers at the same time.

Failure to do this will result in boom damage.