Equipment Coupling And Release Procedure - Komatsu WB93S-5 F50003 Operation & Maintenance Manual

6.12.1 EQUIPMENT COUPLING AND
RELEASE PROCEDURE
When the coupling pins are removed or installed, chips
q
may come off; always use gloves, goggles and helmet.
The change of the equipment must be carried out by two
q
operators, who must decide together the words and
signals to be used during work.
Avoid using your fingers to align the holes, since the may
q
be injured or even cut off.
The following description illustrates by way of example the
coupling and release procedure of a standard digging bucket.
After installing the quick coupling device (1) on the backhoe arm,
proceed as indicated below.
Coupling procedure:
q
1- Position the bucket on the ground, taking care to choose a
level surface and directing the bucket so that its flat part rests
on the ground.
2 - Insert the pins (2) and (3), in this order, in the apposite
coupling holes in the bucket. Lock the pins (2) and (3) with
the relevant safety retainers (4).
Clean the pins (2), (3) and the bushings carefully before
inserting them in the bucket and, if necessary, grease them
slightly.
3 - Remove the safety pin (5) with the relevant retainer (6) from
the quick coupling (1).
4 - Move the arm near the bucket and with a simple folding
movement engage the front pin (2) with the quick coupling
(1).
5 - Slightly lift the bucket, making sure that it is perfectly coupled
with the pin (2).
6 - Engage the coupling pin (3) with the quick coupling (1), using
the bucket folding hydraulic movement. Once the bucket has
been coupled, make sure that it is perfectly engaged and
insert the safety pin (5) in the apposite hole in the quick
coupling (1). Fit the retainer (6) in its place.
IMPORTANT
The engagement of the bucket in the quick coupling must
q
always take place first with the pin (2) and successively
with the pin (3).
Before starting work the operator must make sure that the
q
bucket is correctly connected to the quick coupling.
WARNING
CAUTION
CAUTION
REAR EQUIPMENT MECHANICAL QUICK COUPLING DEVICE
3
4
1
1
1
3
RWA38570
1
6
5
2
4
2
RWAB0530
2
RWAB0540
RWAB0550
281