Control, operation

Installation and removal of attachment parts

Caution!

The hydraulic lines are under pressure. Before connecting the hydraulic lines, depressurise them using the joystick (switch off diesel engine, turn ignition key to contact position, operate the joystick and press the buttons of the "Rotate grapple" function).

Move the safety lever up. Connect the hydraulic hoses 4 and 5 (for the supply of the grab cylinders) to the pipelines.

For grapples with hydraulic rotator, also connect the hydraulic hoses 6 and 7 to the pipelines for this auxiliary equipment.

3.5.3.2Attachment of connecting link

After the grapple has been removed, secure the connecting link 1. There are various ways to do this (depending on the machine equipment).

Fully retract the bucket tilt cylinder 6

Attach the holder 5 to the change lever 2

Insert the securing device 3 in the connecting link 1 and mount it to the holder 5. Insert securing plugs 4 on both sides.

3.5.3.3Changeover to grapple operation

Fig. 3-89 Valve block for tilt cylinder operation / grapple operation

Two hydraulic lines on the bucket stick are used for the operation of the tilt cylinder or the grapple.

The lines are switchable by means of a valve block:

– a - Tilt cylinder operation (for digging buckets)

– b - Grapple operation (for grapples, scrap shears, etc.)

Note

If the machine is equipped with a quick-change adapter and LIKUFIX, there is no need for this changeover. The valve block is therefore omitted.

Turn the two square head screws on the valve block until the marks are aligned in the direction of travel (position b, grapple operation).

Complete all working movements several times without load (opening and closing grapple, moving grapple to the right and left) in order to let any trapped air escape from the hydraulic circuits.

3.5.3.4Removing grapple

If necessary, remove the securing device 3 from the connecting link. Fully open the grabs and place the grapple in a vertical position on level ground.

Caution!

The hydraulic lines are under pressure.

Before disconnecting the hydraulic lines, depressurise them using the joystick (switch off diesel engine, turn ignition key to contact position, operate the joystick and press the buttons of the "Rotate grapple" function).

Move the safety lever up.

Disconnect the hydraulic hoses from the pipelines on the bucket stick. Immediately seal open lines to prevent dirt from entering the system.

Prop up the grapple to ensure that it cannot topple over.

Unscrew the plate 3 and carefully drive out the bolt 2. To do this, you might have to start the diesel engine and lift the attachment slightly from the ground.

Installation and removal of attachment parts

3.5.4Multi-coupling system (optional equipment)

3.5.4.1Overview

1 Stick

3 Hand lever

5 Securing mechanism

7 Coupling plate of working tool

9 Pressure release device

2 Coupling

4 Locking mechanism

6 Protective cover

8 Multi-function lever

The multi-coupling system allows you to connect and disconnect several hydraulic lines at the same time. The working tool can thus be quickly connected to the stick.

A safety pin retains the locking lever, thus preventing inadvertent opening of the coupling. The coupling is properly secured when the safety pin is engaged. The locking lever is only released by the safety pin after the pressure has been fully released. The coupling can then be opened.

3.5.4.2Pressure release device

Caution!

The hydraulic lines are under pressure! The hand lever could thus be moved back with force, causing injury to the operator.

Before connecting/disconnecting the hydraulic lines, depressurise them using the joystick (switch off diesel engine, turn ignition key to contact position, operate the joystick and press the buttons of the "Rotate grapple" function).

Open the pressure release device of the coupling.

The pressure release device of the coupling is operated with the multi-function lever from the toolbox.

Attach the multi-function lever and turn it as follows:

A = Pressure release device closed (operation)

B = Pressure release device open (opening/closing coupling)

3.5.4.3Working tool

When opening or closing the coupling, ensure that the working tool is in a stable position. The grapple must be positioned between the machine and the stick (see Fig. 3-93). This allows for better access to the coupling.

Before connecting the coupling, attach the working tool to the machine (see respective chapter).

Remove the working tool from the machine only when the coupling has been opened.

Check the coupling parts for dirt and clean them if necessary with a clean oilsoaked cloth.

Installation and removal of attachment parts

After connection with the coupling, test the working tool functions.

3.5.4.4Opening coupling

Complete pressure release from the machine (joystick).

Attach the multi-function lever and open the pressure release device of the coupling.

Pull the locking mechanism upwards and move the hand lever down. The coupling is opened.

Pull out the coupling plate (or protective cover).

3.5.4.5Closing coupling

Fully insert the coupling plate (or protective cover) in the coupling to the stop. Move the hand lever up. The coupling is closed, and the lines are connected. Ensure that the safety pin is engaged. Close the pressure release device of the coupling. Remove the multi-function lever.

3.5.5Hydraulic quick-change adapter (optional equipment)

The hydraulic quick-change adapter allows for the fast and efficient exchange of tool attachments without having to leave the operator's cab.

When operated in conjunction with the LIKUFIX quick-coupling system (optional equipment), the connecting lines are automatically connected and disconnected.

3.5.5.1Safety information

–First familiarise yourself with the functions and operation of the quick-change adapter (without attached tools).

–When attaching and removing tools, ensure that no persons are standing in the working area of the attachment.

–During mounting and removing, move the tool attachment only at minimum speed, and only if absolutely necessary.

–Position the tool attachment as little above the ground as is necessary before starting the locking or release procedure, in order to avoid dangerous movements.

–If the buzzer and the "quick-change adapter" indicator light are on and you are NOT carrying out an intended locking or release procedure, immediately shut down the machine. If these indicating elements are not on when you are carrying out an intended locking or release procedure, immediately stop the procedure. This can occur if a lock bolt has inadvertently become dislodged, or if a mechanical, hydraulic or electrical fault occurs. Only resume operation after the defective part has been repaired or replaced.

–Check the tool attachment every day to ensure that it is properly secured. In addition to the above check, carry out a dummy run with the tool attachment: Tilt the tool attachment in and out (without load), lifting it only as far as this is necessary to check proper connection (e.g. pin in bolt eye).

–The lifting capacity of the quick-change adapter or the integrated load lift hook might be greater or smaller than that of the basic machine. Always observe the load capacity values of the machine.

–While attaching or removing tool attachments, ensure that the magnet system (optional equipment) is switched off.

3.5.5.2Overview

1 Lock bolt (extended)

3 Load lift hook

2 Mounting hook for tool attachment

Installation and removal of attachment parts

3.5.5.3Operation and function control

To operate the quick-change adapter, you must simultaneously actuate two control elements (two-hand operation). With one hand, activate the quick-change adapter. Use the other hand to control the movement of the lock bolts.

During release, the "quick-change adapter" indicator light is on. This indicator light, together with a buzzer warning sound, indicates that the quick-change adapter is not locked.

Releasing and locking of quick-change adapter by means of push buttons (standard equipment):

* In machines with optional equipment, the quick-change adapter can be controlled by operating the left or right joystick.

The auxiliary function must be activated (switch S19).

Press and hold the button S47

The quick-change adapter is activated. Press and hold the button R. A buzzer sound is emitted. The lock bolts are retracted. The "quick-change adapter" indicator light is on. The quick-change adapter is released.

Press and hold the button L The buzzer is off.

The lock bolts are extended. The "quick-change adapter" indicator light is on. The quick-change adapter is locked.

Installation and removal of attachment parts

Locking and releasing attachments with the mini joystick (optional equipment):

The mini joystick on the left joystick is used to operate the lock bolts. Press and hold the button S47

The quick-change adapter is activated.

Push the mini joystick to the right R and hold it there. A buzzer sound is emitted. The lock bolts are retracted. The "quick-change adapter" indicator light is on. The quick-change adapter is released.

Push the mini joystick to the left L and hold it there. The buzzer is off. The lock bolts are extended. The "quick-change adapter" indicator light is on. The quick-change adapter is locked.

3.5.5.4Attaching tools

The tool attachment must be placed on the ground in a stable position. Switch off the magnet system (optional equipment). Position the stick and the tool attachment. Fully retract the bucket tilt cylinder. Release the quick-change adapter. Release all buttons.

Position the quick-change adapter in such a way that the tool attachment can be taken up with the mounting hooks.

Lift the tool attachment a little from the ground and fully extend the bucket tilt cylinder until the bearing plate of the tool attachment touches the stop of the quick-change adapter.

The bores of the quick-change adapter and the tool attachment must be properly aligned.

Danger!

Risk of injury!

After the tool attachment is released, it is not any more secured to the machine. The tool attachment might thus become dislodged and cause serious injury.

Position the tool attachment as little above the ground as is necessary before starting the locking procedure, in order to avoid dangerous movements.

Lock the quick-change adapter. Release all buttons.

Caution!

The hydraulic lines are under pressure!

Before connecting the hydraulic lines, depressurise them using the joystick (switch off diesel engine, turn ignition key to contact position, operate the joystick).

Connect all hydraulic or electrical lines (e.g. for the attachment of a grapple). Check the tool attachment for proper fixture by carrying out a visual inspection.

3.5.5.5Removing tool attachment

The tool attachment must be in a stable position.

If the tool attachment cannot be placed in a stable upright position, it must be removed in a lying position. Switch off the magnet system (optional equipment).

Caution!

The hydraulic lines are under pressure!

Before disconnecting the hydraulic lines, depressurise them using the joysticks (switch off diesel engine, turn ignition key to contact position, operate the joysticks).

Disconnect all hydraulic or electrical lines from the tool attachment (e.g. for the removal of a grapple).

Fully extract the bucket tilt cylinder. Place the tool attachment in a slightly elevated position from the ground.

Danger!

Risk of injury!

After the tool attachment is released, it is not any more secured to the machine. The tool attachment might thus become dislodged and cause serious injury.

Position the tool attachment as little above the ground as is necessary before starting the release procedure, in order to avoid dangerous movements.

Release the quick-change adapter. Release all buttons.

Fig.

Placing the tool attachment on the ground

Slowly retract the bucket tilt cylinder and lower the tool attachment to the ground.

Installation and removal of attachment parts

Attach a different tool attachment. - alternativelyLock the quick-change adapter without attaching a tool to switch off the buzzer.

3.5.6Hydraulic quick-change adapter with LIKUFIX (optional equipment)

The LIKUFIX quick-coupling system allows for the fast and efficient exchange of working tools without having to leave the operator's cab. Hydraulic and electrical connections are thereby automatically disconnected and connected.

1 Protective cover of quick change adapter

3 LIKUFIX hydraulic coupling at quickchange adapter

2 Protective cover of working tool

4 LIKUFIX hydraulic coupling at working tool

For mounting and dismantling instructions, see chapter "Hydraulic quick-change adapter". Please observe the following additional instructions:

Before attaching the device, remove the protective covers.

Always keep the hydraulic couplings clean.

Before connecting the tool, check the connections for dirt. If necessary, clean all coupling parts and sealing surfaces with a clean cloth and oil.

When connecting or disconnecting the hydraulic coupling, proceed slowly and with the necessary care.

Tilt the quick change adapter at the attachment so that the coupling plates can easily be connected due to the weight of the working tool.

After completion of the work, and especially before transport, mount the protective covers.

Note!

If the hydraulic coupling cannot be easily connected to each by their own weight, check whether a foreign object (stone, etc.) is jammed between the parts. If this is the case, clean the coupling parts to prevent damage through subsequent coupling.

3.5.7Mechanical quick-change adapter (optional equipment)

The mechanical quick-change adapter allows for the fast and easy exchange of working tools.

3.5.7.1Safety information

–First familiarise yourself with the functions and operation of the quick-change adapter (without attached working tools).

–Before locking or releasing the quick-change adapter, tilt the safety lever upwards.

–Ensure that the working tool cannot be moved by a third party while you carry out this task.

–When attaching and removing working tools, ensure that no persons are located in the working area of the tool.

–During mounting and removing, move the working tool only at minimum speed, and only if absolutely necessary.

–Position the working tool as little above the ground as is necessary before starting the locking or release procedure, in order to avoid dangerous movements.

–If required, use a pedestal or working platform to reach the locking bolts and connections. Do not stand on the working tool.

–Check the locking screw every day to ensure that it is properly tightened. In addition to the above check, carry out a dummy run with the working tool: Tilt the working tool in and out (without load), lifting it only as far as this is necessary to check proper connection (e.g. pin in bolt eye).

–The lifting capacity of the quick-change adapter or the integrated load lift hook might be greater or smaller than that of the basic machine. Always observe the load capacity values of the machine.

3.5.7.2Overview

Installation and removal of attachment parts

3.5.7.3Releasing and locking

Releasing and locking

Turn the locking screw anticlockwise and remove it (A). Insert the crank into the locking bolt and turn it anticlockwise until both locking bolts are inserted to the stop (B). The quick-change adapter is released. Remove or attach the working tool. Insert the crank into the locking bolt and turn it clockwise until both locking bolts are screwed out to the stop (C). The quick-change adapter is locked. Turn the locking screw clockwise (D). The quick-change adapter is secured.

3.5.7.4Attaching working tool

Positioning attachment

The working tool must be placed on the ground in a stable position. Position the stick and the working tool. Fully retract the bucket tilt cylinder. Screw out locking screw. Release the quick-change adapter.

Position the quick-change adapter in such a way that the working tool can be taken up with the mounting hooks.

Lift the working tool a little from the ground and fully extend the bucket tilt cylinder until the bearing plate of the working tool touches the stop of the quick-change adapter.

The bores of the quick-change adapter and the working tool must be properly aligned.

Danger!

Prior to locking, there is no secured connection between the working tool and the quick-change adapter. The working tool might become dislodged and cause serious injury.

Approach the quick-change adapter with great care. Position the working tool as little above the ground as is necessary before starting the locking procedure, in order to avoid dangerous movements.

Lock the quick-change adapter. Screw in the locking screw.

Caution!

The hydraulic lines are under pressure. Before connecting the hydraulic lines, depressurise them using the joystick (switch off diesel engine, turn ignition key to contact position, operate the joystick).

Connect all hydraulic or electrical lines (e.g. for the attachment of a grapple). The safe mounting of the working tool must be checked with a proper visual inspection.

Installation and removal of attachment parts

3.5.7.5Dismantling working tool

The working tool must be in a stable position. If the working tool (e.g. grapple) cannot be placed in an upright position, it must be removed in a horizontal position.

Caution!

The hydraulic lines are under pressure. Before disconnecting the hydraulic lines, depressurise them using the joystick (switch off diesel engine, turn ignition key to contact position, operate the joystick).

Disconnect all hydraulic or electrical lines to the working tool (e.g. for the removal of a grapple).

Fully extract the bucket tilt cylinder. Place the working tool in a slightly elevated position from the ground.

Aligning working tool for release

Danger!

Risk of injury!

After the working tool is released, it is fully disconnected from the machine. The working tool might become dislodged and cause serious injury.

Approach the quick-change adapter with great care.

Position the working tool as little above the ground as is necessary before starting the release procedure, in order to avoid dangerous movements.

Screw out locking screw. Release the quick-change adapter.

Fig. 3-111 Placing the working tool on the ground

Slowly retract the bucket tilt cylinder and lower the working tool to the ground.

3.6General working methods

3.6.1Tips for the proper operation of the machine preventing damage and wear

In order to prolong the service life of the machine and to prevent avoidable damage, observe the following instructions:

–Do not use the machine for work where its attachment is used to hammer against a hard material to remove it. Repeated impact of the working attachment against hard materials results in damage to the steel structure and the machine components.

–Under certain circumstances, where a particular type of boom, stick and working tool are combined, there is a risk that the tool collides with the operator's cab. This can result in damage to the operator's cab, and the operator might suffer injury.

–The use of the slewing gear for drilling material is not permitted.

–Do not lift the machine by propping it up with the attachment. If this happens by accident, slowly lower the machine back onto the ground. Do not lower the machine quickly onto the ground, and do not attempt to dampen this movement with the hydraulics, as this can damage the machine.

Caution!

Incorrect operation of the attachment (e.g. backhoe bucket, concrete crusher, scrap shear, hydraulic hammer, swivelling rotator, stick extension) might result in an excessive load of the attachment.

The load on the attachment is greatest

–when the hydraulic cylinders are fully retracted (in end position) –when the hydraulic cylinders are fully extended (in end position)

–when the attachment is fully extended There is a risk of damage to parts of the equipment, to the hydraulic cylinders and to the machine.

Do not fully extend or retract the hydraulic cylinders.

When the hydraulic cylinders are near the end positions (limit range), move them only slowly and with great caution.

When swivelling the attachment, maintain a minimum distance of 10° to the end position to the tilt cylinder.