HANDLING ACCUMULATOR

Warning

The accumulator is charged with high-pressure nitrogen gas, so mistaken operation may cause an explosion which will lead to serious injury or damage. When handling the accumulator, always do as follows.

● Do not disassemble the accumulator.

● Do not bring it near flame or dispose of it in fire.

● Do not make holes in it or weld it.

● Do not hit it, roll it, or subject it to any impact.

● When disposing of the accumulator, the gas must be released. Please contact your Komatsu distributor to have this work carried out.

This machine is equipped with the accumulator in the control circuit. The accumulator is a device to store the pressure in the control circuit, and when it is installed, the control circuit can be operated for a short time even after the engine is stopped. Therefore, if the control lever is moved in the direction to lower the work equipment, it is possible for the work equipment to move under its own weight.The accumulator is installed to the position shown in the diagram on the right.

● Inside track frame

Accumulator for adjusting track tension

● Inside left deck

Accumulator for hydraulic control circuit

Method Of Releasing Pressure In Control Circuit On Machine Equipped With Accumulator

1.Lower the work equipment to the ground, then close the crusher or other attachment.

2.Stop the engine.

3.Turn the key in the starting switch to the ON position again to let electric current flow in the circuits.

4.Set the safety lock lever to the FREE position, then operate the work equipment control levers and attachment control pedal (if equipped) backwards and forwards, and to the right and left to the full stroke to release the pressure in the control circuit.

5.Set the safety lock lever to the LOCK position to lock the control levers and attachment control pedal. Note that the pressure is not completely removed, so when removing accumulator (1) in the control circuit and accumulator (2) in the valve return. circuit, loosen the bolts slowly and do not stand in the direction where oil spurts out.

Orbcomm Controller

(If equipped)

Machine data can be transmitted without stopping the machine by using the satellite communications function of ORBCOMM (communications company). Please ask your Komatsu distributor to make the default setting when setting up communications.