39
Perform Maintenance Safely
Hydraulic System Hazards
The hydraulic system is under pressure whenever the
engine is running and may hold pressure even after the
engine is shut off. Cycle all hydraulic controls including
the auxiliary hydraulic control after the engine is shut
down. Relieve trapped pressure in the lines after the
attachments are shut down and resting on the ground.
During inspection of the hydraulic system:
— Wait for uid to cool before disconnecting the lines.
Hot hydraulic uid can cause SEVERE BURNS.
— Do not use your hand to check for leaks. Instead,
use a piece of cardboard or paper to search for leaks.
— Wear appropriate eye protection. Hydraulic uid can
cause permanent eye injury.
WARNING! Diesel fuel or hydraulic uid under pressure
can penetrate the skin or eyes and cause serious injury,
blindness or death. Fluid leaks under pressure may not
be visible. Use a piece of cardboard or wood to find
leaks, not your hand. Wear a face shield or safety
goggles for eye protection. If uid is injected into the
skin, it must be removed within a few hours by medical
personnel familiar with this type of injury.
When venting or lling the hydraulic system, loosen the
ller cap slowly and remove it gradually.
Never reset any relief valve in the hydraulic system to a
pressure higher than recommended by the manufacturer.
Wear
Eye Protection
High Pressure
Fluid Can Inject
Into the Body
40
Perform Maintenance Safely
Electrical System Hazards
Before working on the electrical system, disconnect the
battery cable(s).
— Remove the battery negative (-) cable(s) rst.
— When reconnecting the battery, connect the battery
negative (-) cable(s) last.
The liquid in batteries is called “electrolyte.” Electrolyte
contains sulfuric acid, which is a POISON and can
cause SEVERE CHEMICAL BURNS.
Avoid Injury
— Wear a face shield to prevent contact with your eyes.
— Wear chemical-resistant gloves and clothing to keep
this electrolyte off your skin and regular clothing.
WARNING! Electrolyte will damage eyes or skin
on contact. Always wear a face shield to avoid
electrolyte in eyes. If electrolyte contacts eyes, ush
immediately with clean water and get medical attention.
Wear rubber gloves and protective clothing to keep
electrolyte off skin. If electrolyte contacts exposed
skin or clothing, wash off immediately with clean water.
If electrolyte is ingested, seek MEDICAL ATTENTION
IMMEDIATELY. NEVER give uids that would induce
vomiting.
Wear
Protective
Clothing
Wear
Face Protection
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