Komatsu WA270-3H Operation & Maintenance Manual page 49

Wheel loader
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Securing the working attachment
DANGER
Risk of injury! The attachment may fall suddenly when in raised
position! For safety reasons, a raised attachment must be
secured against dropping before you pass or stand under it.
The working attachment must be secured against moving if any work is
to be carried out under it when it is in a raised position. For this purpose
you should use either a supporting prop (1) which is to be positioned
below the lifting arms, or support braces (2) which are mounted around
the piston rods. The support braces are available as optional extras.
WA270-3 Boom: P/N 42Y-98-H1100
Important! Please note: 2 support braces are necessary for every
machine; one for the left-hand lifting ram and one for the right-
hand lifting ram.
When using the support braces the following procedure is to be adhered
to at all times:
1.
Park the machine on level, solid ground.
2.
Apply the parking brake.
3.
Place wheel chocks in front of the wheels to prevent the machine
from inadvertently rolling away.
4.
Lift the arm far enough to allow the support braces (2) to be placed
on the lifting ram's piston rods.
5.
Switch the engine off.
6.
Mount the support braces on the piston rods without standing under
the lifting arm, use a stepladder and tighten the screws (3) with
your fingers.
7.
With the engine switched off, lower the arm slowly until it rests on
the supports.
8.
Move the control lever (4) to the "NEUTRAL" position and secure
it by means of the locking lever (Locked).
Safety Measures During Maintenance
2
4
3
Locked
1 - 1 9

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