Operation Of Work Equipment - Komatsu PC400LC-5 Operation & Maintenance Manual

12. OPERATION
12.8 OPERATION OF WORK EQUIPMENT
a
WARNING
If any lever is operated when in the deceleration range, the
engine speed will suddenly increase, so be careful when oper-
ating the levers.
The work equipment is operated by the left and right work
equipment control levers. The left work equipment control lever
operates the arm and swing, and the right work equipment control
lever operates the boom and bucket.
The movements of the lever and work equipment are as shown
in the diagrams on the right. When the levers are released, they
automatically return to the neutral position and the work equipment
is held in place.
l If the work equipment control lever is returned to the neutral
position when the machine is stopped, even if the fuel control
dial is set to FULL, the auto-deceleration mechanism will act to
reduce the engine speed to a mid-range speed.
REMARK
If the levers are operated within 15 seconds after stopping the
engine, it is possible to lower the work equipment to the ground.
In addition, the levers can also be operated to release any remaining
pressure inside the hydraulic cylinder circuit and to lower the boom
after loading the machine on a trailer.
I
I
Arm oDeration
- AE097840
Swing operation
Boom operation
AE097860
Bucket operation
2-60