Doosan DL420A, Shop Manual, Page: 18 / 21

SP002667 Wheel Loader Safety
Page 12
Maintenance
The machine and some attachments have components that
reach high temperatures under normal operating conditions. The
primary source of high temperatures are the engine and exhaust
system. If damaged or incorrectly maintained, the electrical
system can be a source of arcs or sparks.
Flammable debris (leaves, straw, etc.) must be removed
regularly. If flammable debris is allowed to accumulate, it can
cause a fire hazard. Clean machine often to avoid this
accumulation. Flammable debris in an engine compartment is a
potential fire hazard.
The operator's area, engine compartment and engine cooling
system must be inspected every day and cleaned. This is
necessary to prevent fire hazards and overheating.
Operation
Do not use machine where exhaust, arcs, sparks or hot
components can contact flammable material, explosive dust or
gases.
Do not operate machine near any flame.
Exhaust shields (if equipped) protect hot exhaust components
from oil spray or fuel spray in case of a break in a line, hose, or
seal. Exhaust shields must be correctly installed and maintained
properly.
Electrical
Check all electrical wiring and connections for damage daily.
Keep battery terminals clean and tight. Repair or replace any
damaged parts or wires that are loose or frayed. Clean all
electrical connections and tighten all electrical connections.
Never check battery charge by placing a metal object across
terminal posts. Use a voltmeter or a hydrometer.
Battery gas can explode and can result in death or serious
injury. Follow procedures in this manual for connecting battery
and for jump-starting. Do not jump-start or charge a frozen or
damaged battery. Keep all flames and sparks away from
batteries. Do not smoke in battery charging area.
Improper jumper cable connections can cause an explosion that
can result in death or serious injury. Refer to Operation and
Maintenance Manual for proper procedure in this manual.
Do not charge a frozen battery. This can cause an explosion.
After market radios or other electric operated equipment in cabin
must have a fuse in the electrical circuit.