
70 31200243
Operation Section
Illustration 96 g00975278
4. Extend the boom slowly until the quick coupler
tubes contact the carriage. Raise the boom until the
quick coupler tubes are engaged with the hooks.
Illustration 97 g00975332
5. Tilt back the quick coupler until the lower part of the
carriage is in contact with the quick coupler.
6. 6. Press and hold the bottom of the switch for the
quick coupler in order to engage the quick coupler
pins. Release the switch after the pins are fully
engaged.
An improperly installed work tool could become
dislodged from the machine during operation. This
could cause injury or death. Do not operate the
machine until you have positive indication that the
quick coupler pins are fully engaged.
Illustration 98 g00975388
Left quick coupler pin
7. Check the positions of the pins on both sides of the
quick coupler. Both quick coupler pins must be fully
engaged. Lower the boom until the carriage is
pressed against the ground. Slowly back up the
machine. As the machine starts to move, check for
movement between the carriage and the quick
coupler. Movement indicates that the pins for the
quick coupler are not properly installed. Do not
operate the machine unless the pins for the quick
coupler are fully engaged through the quick coupler
and the carriage.
8. If equipped, install the hydraulic lines for the
carriage to the diverter valve.
Removal Procedure
1. Tilt back the quick coupler. Lower and extend the
boom approximately 2 m (6.6 ft) so that the quick
coupler can be seen from the cab.
2. If equipped, disconnect the hydraulic lines for the
attachment from the diverter valve.
Illustration 99 g01060075
3. Move the red portion of the switch for the quick
coupler downward and press the top of the switch.
Hold the top of the switch until the quick coupler
pins are fully disengaged. Release the switch.