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東部重工業 TOBU JUKOGYO CO.,LTD.

Product FAQ

Single cable wireless cylinder type grab bucket failure and countermeasures.

Bucket does not open (does not open from the beginning)

Did you install the radio and battery in the bucket?

Install

Did you make a secure connection?

Reconnect

Is a fully charged battery installed?

Mounting

Did you turn on the wireless receiver switch (check that the power lamp is lit)?

Turn on the power

Did you turn on the wireless transmitter (is the PWR lamp lit)?

Turn on the switch

Is a fully charged battery installed?

Mounting

Does the receiver relay work by pressing the “open” button on the transmitter?

Radio malfunction

Does the solenoid valve pilot lamp light up when the “open” button on the transmitter is pressed?

Radio malfunction or
Cable disconnection

Can you hear the solenoid valve operating sound by pressing the “open” button on the transmitter?

Solenoid valve coil damage
(Exchange)

Are there any obstacles in each shaft, segment gear, etc.

Remove

Is the flow rate adjustment knob of the hydraulic block closed?

Turn counterclockwise
to open

It is considered that there is an abnormality inside the cylinder
(overhaul is required)

Bucket does not open (working)

Wireless transmitter power supply (whether the PWR lamp is lit) Note) If it blinks, the battery level is low.

Battery replacement

Is the voltage of the receiver battery low?
(Check that the receiver power lamp is lit)

Turn on the power

Did you make a secure connection?

Connecting

Does the receiver relay work by pressing the “open” button on the transmitter?

Radio malfunction

Does the pilot lamp of the solenoid valve light up by pressing the “open” button on the transmitter?

Radio malfunction or
Cable disconnection

Can you hear the solenoid valve operating sound by pressing the “open” button on the transmitter?

Solenoid valve coil damage
(Exchange)

Are there any obstacles in each shaft, segment gear, etc.

Remove

It is considered that there is an abnormality inside the cylinder
(overhaul is required)

In addition, if strong radio waves (jamming radio waves) in the same band as the bucket frequency are generated, the receiver side protection circuit may work and may not operate (open) to prevent malfunction.
Please use it after watching the situation for a while.

Bucket does not close at all

Did you hold down the “Open” button on the radio?

Release

Is the hydraulic block wing nut kept tightened?

loosen

Bucket does not close completely

There is no problem if the cutting edge does not close due to the compression of the load.
(It may not be completely closed with coal, salt, etc., but it can be used as it is because it does not leak due to the nature of the load.)

There is a gap between the upper frame and the movable frame when closed

Air mixing (improved by bleeding air)

Return to normal

If it does not change even after bleeding air, reduce the buffer plate