Hitachi ZX170W-5A, Workshop Manual

Page: 34 / 61

SAFETY
SA-28
SA-019
Prevent Burns
Hot spraying fluids:

After operation, engine coolant is hot and under pressure.
Hot water or steam is contained in the engine, expansion
tank and heater lines.
Skin contact with escaping hot water or steam can cause
severe burns.

Avoid possible injury from hot spraying water. DO NOT
remove the expansion tank cap until the engine is cool.
When opening, turn the cap slowly to the stop. Allow all
pressure to be released before removing the cap.

The hydraulic oil tank is pressurized. Again, be sure to
release all pressure before removing the cap.
Hot fluids and surfaces:

Engine oil, gear oil and hydraulic oil also become hot during
operation.
The engine, hoses, lines and other parts become hot as well.

Wait for the oil and components to cool before starting
any maintenance or inspection work.
Replace Rubber Hoses Periodically

Rubber hoses that contain flammable fluids under pressure
may break due to aging, fatigue, and abrasion. It is very
difficult to gauge the extent of deterioration due to aging,
fatigue, and abrasion of rubber hoses by inspection alone.

Periodically replace the rubber hoses. (See the page of
“Periodic replacement of parts” in the operator’s manual.)

Failure to periodically replace rubber hoses may cause a fire,
fluid injection into skin, or the front attachment to fall on a
person nearby, which may result in severe burns, gangrene,
or otherwise serious injury or death.
SA-039
SA-225
WLBJE0-EN-00