Komatsu Utility Avance WB91R-2, Operation & Maintenance Manual

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147
USING THE MACHINE AS AN EXCAVATOR
3.13.5 CHANGING THE BACKHOE BUCK-
ET
DANGER
•
When the coupling pins are removed or installed, chips
may come off; always wear gloves, goggles and helmet.
•
The change of the equipment must be carried out by two
persons, who must decide together the words and signals
to use during operations.
•
Do not use your fingers to center the holes, since they
may be injured or even cut.
•
The described procedures are valid also for the coupling
of the mechanical constraints of the optional equipment.
1 - Position the bucket on level ground, directing it so that the flat
part of the bucket back rests on the ground.
2 - Remove first the tie-rod pin (1) and then the arm connection
pin (2).
3 - Change the bucket, taking care to clean the pins and bush-
ings perfectly and to grease the pins slightly before reinstall-
ing them.
IMPORTANT
☞
•
Install the arm coupling first.
4 - Put back the safety stops (3) of the pins.
5 - Lubricate the pins by means of the special grease nipple (see
“4.5.1 LUBRICATION DIAGRAM”).
RWA03670
2
3
3
1