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MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
Maintenance Under Special Environmental Conditions
Operating Conditions
Muddy Soil, Rainy or
After Operation
Snowy Weather
Near the Ocean
After Operation
Dusty Atmosphere
Air Cleaner
Radiator
Fuel System
Engine, Muffler
Rocky Ground
Tracks
Front Attachment : Standard attachment may be damaged when digging rocky ground.
Falling Stones
Cab Head Guard
Freezing Weather
Fuel/Lubricant
Engine Coolant
Battery
Track
Precautions for Maintenance
: Clean the machine and check for cracks, damaged, loose or missing bolts
and nuts. Lubricate all necessary parts without delay.
: The following salt pollution measures must be taken when the machine is
operated at sea or at coastline.
(1) After completing the work, extend/retract the hydraulic cylinders
several times to form oil film on the rod surface. Store the machine
with cylinders retracted as much as possible.
(2) Thoroughly clean the machine with fresh water to wash off salt.
(3) Perform touch up painting periodically on hose fittings, lubrication
piping and inserting position of cover, where sea water is easily
collected, in order to prevent corrosion.
(4) During storage of the machine, cover the machine by tarps to prevent
sea water from entering into the cab vent. Apply rust prevention oil
(example: ANTIRUST P-1300NP-3 JX Nippon Oil & Energy Corporation)
onto plated part of the cylinder rods.
: Clean the element regularly at shorter service intervals.
: Clean the oil cooler screen to prevent clogging of the radiator core.
: Clean the filter element and strainer regularly at shorter service intervals.
: Clean earlier than the normal interval to prevent dust from sticking and
accumulating. Inhibit regeneration according to the machine operating
condition.
: Carefully operate while checking for cracks, damage and loose bolts and
nuts. Loosen the tracks a little more than usual.
Reinforce the bucket before using it, or use a heavy duty bucket.
: Provide a cab guard to protect the machine from falling stones. Consult
your nearest Hitachi dealer.
: Use high quality and low viscosity fuel and oil.
: Be sure to use antifreeze.
: Fully charge the batteries at shorter intervals. If not fully charged,
electrolyte may freeze.
: Keep the track clean. Park the machine on a hard surface to prevent the
tracks from freezing to the ground.
9-1
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