of Rear Winch.
a. General. Medium wrecker trucks covered in this manual are equipped with a
worm-geared, horizontal-drum winch mounted on the rear of truck. The winch is equipped with
an automatic safety brake to hold a load when the winch shift lever is being used, a level wind,
and a pneumatically controlled cable tensioner. Maximum rated pull for the winch is 45,000
The maximum rated pull of 45,000 pounds is available only when the cable is
unwound from the drum far enough to completely expose the first layer of cable.
General instructions for winching are given in FM 20-22.
b. Positioning Wrecker. The most effective truck position is with the load directly behind
the winch. When this position is not possible, guide rollers permit pulling a load at any angle up
to 90, right or left, and at any angle up to 60 above or below the winch.
Angled pulls reduce winch capacity.
c. Unwinding Winch Cable.
(1) To set electric brake lock, depress brake pedal (8), push in lock switch button (2) and
release brake pedal.
Do not use electric brake lock when parking for a long period of time. Use