Passing; Dumping; To Raise The Dump Body - Komatsu 730E Operation & Maintenance Manual

Operation - Section 30
Page 30-10
11. When the maximum truck speed is reached,
haul trucks equipped with Statex III w/fuel
enhancement (fuel saver) system will experi-
ence a decrease in engine rpm.
NOTE: This is different from trucks equipped with
Statex II or Statex III without fuel enhancement,
which increase rpm upon reaching the speed limit.

PASSING

1. DO NOT pass another truck on a hill or blind
curve!
2. Before passing, ensure the road ahead is clear.
If a disabled truck is blocking your lane, slow
down and pass with extreme caution.
3. Use only the areas designated for passing.

DUMPING

1. Approach the dump area with extreme caution.
Ensure the area is clear of persons and
obstructions, including overhead utility lines.
Obey signals directed by the spotter, if present.
Avoid unstable areas. Stay a safe distance from
the edge of the dump area. Position the truck on
a solid, level surface before dumping.
As the body raises, the truck center of gravity will
move. The truck must be on a level surface to
prevent tipping/rolling!
2. Carefully maneuver the truck into the dump posi-
tion. When backing the truck into the dump posi-
tion, use only the brake pedal to stop and hold the
truck. DO NOT rely on the wheel brake lock to
stop the truck. This control is unmodulated and
applies the rear service brakes only.
3. When the truck is stopped and in the dump
position, apply the wheel brake lock. Move the
selector switch to the NEUTRAL position.
NOTE: As soon as the dump body is raised, reverse
travel is restricted. Reverse travel will only continue
once the body has been lowered AND the direction
control handle is taken out of reverse and put back
in.

To Raise The Dump Body:

Dumping certain types of material can result in
sudden and violent movement of the truck. This
truck movement may cause injury to the opera-
tor. It may also cause damage to the hoist cylin-
ders, frame, and/or body hinge pins. Use caution
when dumping large rocks (10% of payload, or
greater) to prevent the load from shifting too
quickly. Sticky material (loads that do not flow
freely from the body) may also cause sudden
truck movement if the load releases quickly.
4. Move the lever to the HOIST position. Refer to
Fig. 30-2. Releasing the lever while in the HOIST
position will cause the lever to move to the HOLD
position.
5. Raise the engine rpm to accelerate the hoist
speed.
If dumping very large rocks or sticky material, as
described in the warning, slowly accelerate the
engine rpm to raise the body. When the material
starts to move, release the hoist lever to the HOLD
position. If the material does not continue to exit
the body, repeat this procedure as necessary.
Reduce the engine rpm as the last stage of the hoist
cylinder begins to extend. Let the engine go to low
idle as the last stage reaches half-extension.
FIGURE 30-2. HOIST LEVER POSITIONS
6. Release the hoist lever as the last stage of the
hoist cylinder reaches full extension.
OM3070
Operating Instructions