Work Equipment Controls And Operations - Komatsu PC750LC-7 Operation Manual

OPERATION

WORK EQUIPMENT CONTROLS AND OPERATIONS

If the lever is operated when the engine speed has been lowered by the auto-deceleration function, the engine speed will suddenly
rise, so operate the levers carefully.
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.
If the work equipment control levers are 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
With this machine, an accumulator is installed in the operating circuit, if less than 15 seconds has passed since the
engine was stopped, when the starting switch is turned to the ON position even with the engine stopped, it is
possible to operate the levers to lower work equipment to the ground.
In addition, this operation can also be used to release the remaining pressure in the hydraulic cylinder circuit or to
lower the boom after the machine has been loaded onto a trailer.
Arm operation
Swing operation
MACHINE OPERATIONS AND CONTROLS
WARNING
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