OP000506
1-37
Safety
Welding Repairs
When carrying out welding repairs, carry out the welding in
a properly equipped place. The welding must be performed
by a qualified worker. During welding operations, there is the
danger of, generation of gas, fire, or electric shock, so never
let an unqualified worker do welding.
The qualified welder must do the following:
• To prevent explosion of the battery, disconnect
the battery terminals and remove batteries.
• To prevent generation of gas, remove the paint
from the location of the weld.
• If hydraulic equipment, piping or places close to
them are heated, a flammable gas or mist will be
generated and there is danger of it catching fire.
To avoid this, never subject these places to heat.
• Do not weld on pipes or on tubes that contain
flammable fluids. Do not flame cut on pipes or on
tubes that contain flammable fluids. Before you
weld on pipes or on tubes or before you flame
cut on pipes or on tubes, clean the pipes or
tubes thoroughly with a nonflammable solvent.
• If heat is applied directly to rubber hoses or
piping under pressure, they may suddenly break
so cover them with a fireproof covering.
• Wear protective clothing.
• Make sure there is good ventilation.
• Remove all flammable objects and provide a fire
extinguisher.
Precautions for Removal, Installation,
and Storage of Attachments
Before starting removal and installation of attachments,
decide the team leader.
Do not allow anyone except the authorized workers close to
the machine or attachment.
Place attachments that have been removed from the
machine in a safe place so that they do not fall. Put up a
fence around the attachments and take other measures to
prevent unauthorized persons from entering.
Figure 29
HDO1041L
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