Hitachi 120-3 class User Manual

MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
9-1
MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS
Operating Conditions Precautions for Maintenance
Muddy Soil, Rainy or
Snowy Weather
Before Operation: Check the tightness of plug and all drain cocks.
After Operation: Clean the machine and check for cracks, damaged, loose or missing bolts
and nuts. Lubricate all necessary parts without delay.
Near the Ocean 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.
Dusty
Atmosphere
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.
Rocky Ground Tracks: Carefully operate while checking for cracks, damage and loose bolts and
nuts. Loosen the tracks a little more than usual.
Front Attachment: Standard attachment may be damaged when digging rocky ground. Rein-
force the bucket before using it, or use a heavy duty bucket.
Freezing Weather Fuel: Use high quality fuel suitable for low temperature.
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 fully
charged, electrolyte may freeze.
Tracks: Keep the track clean. Park the machine on a hard surface to prevent the
tracks from freezing to the ground.
Falling Stones Cab: Provide a cab guard to protect the machine from falling stones when neces-
sary.

Hitachi 120-3 class Specifications

General

Brand	Hitachi
Model	120-3 class
Category	Excavators
Language	English