Table of Contents
Advertisement
OPERATION
ACCUMULATOR HANDLING
On machines equipped with an accumulator, for a short
time after the engine is stopped, if the work equipment
control lever is moved to the LOWER position, the work
equipment will move down under its own weight.
After stopping the engine, always place the safety lock
lever in the LOCK position and lock the attachment control
pedal with the lock pin.
The accumulator is filled with high-pressure nitrogen gas,
and it is extremely dangerous if it is handled in the wrong
way. Always observe the following precautions.
q Never make any hole in the accumulator or expose it to
flame or fire.
q Do not weld any boss to the accumulator.
q When disposing of the accumulator, it is necessary to
release the gas from the accumulator, so please con-
tact your Komatsu distributor.
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 oper-
ated for a short time even after the engine is stopped. There-
fore, 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 dia-
gram on the right.
RELEASING PRESSURE IN THE CONTROL CIRCUIT ON MACHINES EQUIPPED WITH
AN ACCUMULATOR
1. Place the work equipment on the ground. Close the crusher attachment jaws, etc.
2. Stop the engine.
3. Move the safety lock lever to the free position. Move the work equipment control lever and the attachment con-
trol pedal (option) to full stroke back and forth, right and left so as to release the pressure in the control circuit.
4. Start the engine again, stop the engine after 2 - 3 seconds, then carry out the operation in Step 3.
5. Continue the operation in Step 4 until the hissing noise of pressure oil can no longer be heard. (Approx. 2 - 3
times)
6. Move the safety lock lever to the lock position. Lock the control lever and attachment control pedal. The pres-
sure, however, will not be completely released, so when the accumulator is removed in the control circuit,
gradually loosen the screws. Never stand in the oil ejection direction.
WARNING
DETAILED CONTROLS AND GAUGES
9JH02219
3-75
Advertisement
Table of Contents
