1-28
SAFETY
Be careful with hot cooling systems
PRECAUTIONS ON MAINTENANCE
Do not remove the radiator cap or the drain
plug when the cooling water is hot. Stop the
engine and wait until the engine and the
cooling water cool. Then, slowly loosen the
radiator cap to release the internal pressure
and remove it.
Be careful with oil internal pressure
Pressure is maintained in the hydraulic circuit
long after the engine has been shut down.
•Completelyrelievetheinternalpressure
before performing maintenance work.
•Thehydraulicoilishighenoughpressureto
penetrate the skin or eyes and cause
seriousinjury,blindnessordeath.
Remember that the hydraulic oil escaping
from a small hole is almost invisible. When
checking for leaks, wear protective goggle
and thick gloves, and use a paperboard or
plywood to keep your skin from oil
spurting.
If oil penetrates the skin, it must be
surgically removed within a few hours by a
doctorfamiliarwiththistypeofinjury.
Release pressure before working on the
hydraulic system
Oil may spurt out if caps or filters are
removed or pipes are disconnected before
releasing the pressure in the hydraulic
system.
•Immediately
aftertheengineisstopped,
and while the safety lock lever is still in the
unlock position, turn the starter switch to
ON and move all the control levers and
pedals several times all the way in each
direction to release the pressure from the
working equipment circuitry.
•Presstheairbreatherbuttontorelievethe
internal pressure from the tank.
•Whenremovingplugsorscrews,orwhen
disconnecting hoses, stand to the side and
loosen them slowly to gradually release the
internal pressure before removing.
•Oilorplugmayspurtoutaccordingtothe
pressureinthetravelmotorcase.Loosen
the plug slowly and release the internal
pressure.
Be careful with debris when the hammer
is being used
When using a hammer, pins may fly out or
metal particles may be scattered. This may
leadtoseriousinjury.
•Ifhardmetalpartssuchaspins,bucket
teeth, side cutter or bearings are hit with a
hammer, wear protective gear such as
safety goggles and gloves.
•Whenhittingpinsorbucketteeth,always
check that there is no one in the
surrounding area.