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MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
Operating Conditions
Muddy Soil, Rainy or
Snowy Weather
Near the Ocean
Dusty
Atmosphere
Rocky Ground
Freezing Weather
WARNING:
• The machine owner should take responsibility for
installing the roll-over protective structure (ROPS).
Be sure to install the cab with ROPS if the machine
is unavoidably operated in a job site where falling
stones might occur to protect the operator from
being involved in personal accidents as long as
the seat belt is used. The ROPS cab type ZW220,
ZW250 and ZW310 can comply with this require-
ment. Consult your nearest Hitachi.
• Before operating the machine in a river, check the
riverbed conditions in advance. Avoid driving the
machine into a river where the riverbed is steep
and deep or the stream is rapid.
Before Operation:
Check tightness of plug and all drain cocks.
After Operation:
Clean the machine and check for cracks and damage. Check for loose or
missing bolts and nuts. Lubricate all necessary parts without delay. If the
machine should be submerged in water more than approximately 450 mm
water may get into the brake device (like the park brake), resulting in poor
braking performance. Watch out when starting/stopping the machine.
Before Operation:
Check tightness of plugs and all drain cocks.
After Operation:
Thoroughly clean the machine with fresh water to wash off salt. Service elec-
trical equipment often to prevent corrosion.
Air Cleaner:
Clean the element regularly at shorter service intervals.
Radiator:
Clean the oil cooler screen to prevent clogging of the radiator core.
Fuel System:
Clean the filter element and strainer regularly at shorter service intervals.
Electrical Equipment: Clean them regularly, in particular, the commutator surface of the alternator
and starter.
Chassis:
Check for damage on tires, for loose, cracked, worn, and damaged bolts and
nuts.
Front Attachment: Standard attachment may be damaged when digging rocky ground. Rein-
force the bucket before using it, or use a heavy duty bucket.
Fuel:
Use high quality fuel suitable for low temperature.
Check the fuel tank breather pipe freezing.
Lubricant:
Use high quality low viscosity hydraulic oil and engine oil.
Engine Coolant:
Be sure to use antifreeze.
Battery:
Fully charge the batteries regularly at shorter service intervals. If not charged
fully, electrolyte may freeze.
Tires and Frames:
Keep fires and frames clean. Park the machine on a hard surface to prevent
the tires from freezing to the ground.
Precautions for Maintenance
9-1
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