Hitachi ZAXIS 135US-5B Operator's Manual page 278

Maintenance Guide Table
The maintenance guide table is affixed to the reverse side
of the tool box cover. Lubricate and/or service the parts at
the intervals as instructed in the table so that all necessary
maintenance can be performed regularly.
 Symbol Marks
The following marks are used in the maintenance guide
table.
Grease
(Front Joint Pin, Swing Bearing, Swing
Gear)
Gear Oil
(Pump Transmission, Travel Reduction
Device, Swing Reduction Device)
Engine Oil
Engine Oil Filter
Hydraulic Oil
MAINTENANCE
7-4
Hydraulic oil filters
(Pilot Filter, Hydraulic Oil Tank Filter,
Suction Filter)
Air Cleaner Element
Coolant
(Long-Life Coolant)
Fuel Filter
(Fuel Main Filter, Pre-Filter)