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 242 of 481

(1)

Position rear of wrecker directly in front of disabled vehicle.

(2)

If tires, transmission, and steering of disabled vehicles are serviceable,

proceed to step 4 and install towbar (10) to front bumper shackle brackets (14).

(3)

If disabled vehicle has no shackle brackets (14), or if tires, transmission,

and/or steering of disabled vehicle are unserviceable, proceed to step 5d and use lift-

tow procedure.

(4)

To tow a disabled vehicle using front bumper shackle brackets:

(a)

Remove lifting shackles (13) from bumper (15) of disabled vehicle.

(b)

Install clevis (12) end of towbar (10) on front bumper shackle

brackets (14) and secure in place with clevis bolt (16) and safety pin (11).

(c)

Install yoke (18) end of towbar (10) to wrecker pintle hook (19).

.

WARNING

.

Crisscross and connect utility chains between vehicles in the

event towbar breaks or becomes disconnected. Failure to do this

will result in injury or death.

(d)

Crisscross and connect

utility chains (17) to spring hangers (20)

on towed vehicle and secure to towing

vehicle.

(e)

Connect emergency and

service air line (22) to respective half

coupling (21) on each vehicle.

(f)

Release parking brake

and place transmission, transfer case,

and PTO of disabled M939/A1/A2 series

vehicles in neutral.

(g)

Reverse steps a through f

after completion of towing.

TM 9-2320-272-10

2-24. OPERATION OF MEDIUM WRECKER (Contd)

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