TM5-3810-305-10
Section VI
Operation Under Emergency or Abnormal Conditions
Emergency Load Lowering Procedure.
In the event that lowering a suspended load by
the normal means is impossible due to engine
failure, pump failure or a hydraulic line failure, a
hydraulic hand pump is provided. The following
procedures will restore the vehicle to a normal
traveling or towing attitude.
During the execution of this
procedure, the danger exists of
uncontrollably dropping a load.
Rotate the upperstructure to a
safe position. Failure to follow
this procedure could cause
DEATH or serious injury.
NOTE
Swing the Boom Mechanically
1.
2.
3.
Remove three nuts (1), bolt (2), three washers
(3), five bolts (4), washers (5), deck plate (6),
and pinion cover (7, Figure 4-52).
NOTE
Move swing lever in same swing
direction to relieve oil pressure
as the upperstructure is being
turned.
Attach a wrench to the protruding shaft of the
swing box drive. Turn swing box drive shaft
clockwise to swing boom to the right and
counterclockwise to swing boom to the left.
Rotate the upperstructure and the load to a
safe area.
Two men are required to perform
this task.
Figure 4-52. Swing Drive Box
4-56
