Liebherr Hydraulic excavator R 974 C Operating manual 30724 - PDF DOWNLOAD

Page 220

Control and operation

Operating manual

Installation and removal of attachment parts

To lock the quick-change adapter:

Fig. 3-107 Locking the quick-change adapter Danger! Before locking, there is no fixed connection between the work tool and the quickchange adapter. The work tool could under certain circumstances fall out and injure people. Approach the quick-change adapter with the utmost care. Push the safety lever up to secure the work equipment against unintentional movement. No work movements can be carried out when pilot control devices, eg. the joystick or foot pedals, are operated. Insert the crank 3 in the locking pin 1 and turn to the right (clockwise), until both locking pins 1 are extended as far as the stop. The work tool is bolted on when taking up normally. Screw the locking screw 2 into the locking pin. Danger! An incorrectly locked quick-change adapter could open when operating! Ensure that the locking pins are always locked by the sealing plug 4 on the one side and by the locking screw 2 on the other side. Check daily to ensure that the locking screw 2 is correctly positioned.

Caution! Hydraulic lines are pressurized! Remove the pressure using the joystick before connecting the hydraulic lines (switch off the engine, turn the ignition key into the contact position, operate the joystick). Connect hydraulic lines or electrical lines, if necessary (eg. when attaching a grab).

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3 - 130

MJFCIFSS

R 974 C / 10069856


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5.2Cleaning machine

1hr
pages 290-394

5Maintenance

2min
pages 287-289

Troubleshooting

1min
pages 284-285

Troubleshooting

6min
pages 278-283

Troubleshooting

10min
pages 266-271

4Troubleshooting

3min
pages 263-265

Control and operation

1min
pages 260-262

Control and operation

3min
pages 256-259

Control and operation

2min
pages 254-255

Control and operation

4min
pages 248-253

Control and operation

2min
pages 246-247

Control and operation

1min
pages 244-245

Control and operation

10min
pages 230-243

Control and operation

5min
pages 224-229

Control and operation

4min
pages 220-223

Control and operation

8min
pages 212-219

Control and operation

1min
pages 210-211

Control and operation

2min
pages 206-209

Control and operation

1min
pages 204-205

Control and operation

1min
pages 202-203

Control and operation

3min
pages 198-201

Control and operation

3min
pages 194-197

Control and operation

1min
pages 192-193

Control and operation

6min
pages 186-191

Control and operation

1min
pages 184-185

Control and operation

4min
pages 180-183

Control and operation

1min
pages 178-179

Control and operation

2min
pages 176-177

3.4Working with the machine

4min
pages 170-175

the machine into operation

14min
pages 157-169

Control and operation

1min
pages 156-157

Control and operation

12min
pages 142-155

Control and operation

3min
pages 138-141

Control and operation

1min
pages 136-137

Control and operation

2min
pages 134-135

Control and operation

9min
pages 126-133

Control and operation

4min
pages 120-125

Control and operation

1min
pages 118-119

Control and operation

6min
pages 112-117

Control and operation

8min
pages 106-111

Control and operation

1min
pages 104-105

Control and operation

1min
pages 102-103

Control and operation

1min
pages 100-101

Control and operation

3min
pages 96-99

Safety instructions, Signs on the machine

1min
pages 86-87

Safety instructions, Signs on the machine

4min
pages 78-81

Safety instructions, Signs on the machine

3min
pages 76-77

2Safety instructions, Signs on the machine

28min
pages 61-75

1Product description

1min
pages 11-15
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