a. Apply the transporter brake system; place the transmission
in neutral. Engage the power take-off; set the hand throttle to
operate the engine not to exceed 1700 RPM maximum. Refer to
Ensure bogie brackets are in place on
transporter before unloading cradle. Refer
to TM 5-5420-209-12.
b. Release the cables (1) (one on each side) from transporter
(2). Remove safety pin from behind boom locking pin.
c. Push the hydraulic pin lever at the transporter to disengage
forward locking pin.
d. Engage dolly retainer (3) to ensure that the dolly will not
move when winch cable is slacked.
e. Push the boom control lever to elevate the boom about
three feet. Slowly pay out cable by pushing winch control lever
so that the cradle rolls downward over the rear rollers.
Cradle may be unloaded without the
bridge erection boat.
f. After the cradle center of gravity passes the rollers, allow
the cradle to come to rest on the ground.
g. Release the service brakes, and pay out cable.
h. The transporter will move forward until the cradle forward
stop pins engage the rear stop brackets.