Komatsu WB93R-5, Operation & Maintenance Manual

Page: 155 / 284

USING THE MACHINE AS AN EXCAVATOR
153
3.13.4.1 CHANGING THE BACKHOE BUCKET
WARNING
q
When the coupling pins are removed or installed, chips
may come off; always use gloves, goggles and helmet.
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The change of the equipment must be carried out by two
persons, who must decide together the words and sig-
nals to be used during operations.
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Avoid using your fingers to align the holes, since the
may be injured or even cut off.
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The described procedures are valid also for the cou-
pling of the mechanical connections 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 connec-
tion pin (2).
3 - Change the bucket, taking care to clean the pins and
bushings perfectly and to grease the pins slightly before
reinstalling them.
IMPORTANT
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Install the arm connection pin first.
4 - Put back the safety retainers (3) of the pins.
5 - Lubricate the pins by means of the special grease nipple
(see "4.5.1 LUBRICATION DIAGRAM").
NOTE
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If the backhoe is equipped with quick coupling device, see
"6.12 REAR EQUIPMENT MECHANICAL QUICK COU-
PLING DEVICE".
RWA03670
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