Inspection And Maintenance Table - Hitachi ZW 120-6 Operator's Manual

Inspection and Maintenance Table

Check and/or carry out the maintenance at intervals of
the specified operating hours below or the calender date,
whichever comes first.
IMPORTANT: Severe applications require more frequent
maintenance. Severe conditions include heavy dust,
extremely abrasive material, caustic chemicals,
extremely wet conditions or abnormally hot or cold
ambient temperatures.
Section
Check Engine Oil Level
Check Coolant Level
Check Accelerator Pedal Operation, and
Exhaust Gas Color and Noise
Check Fuel Level
Check Drive Belt
Drain Fuel Pre-Filter
Check Sound Absorbing Mat Around
Engine
Check DEF/AdBlue® Level
Check Fuel Hoses
Change Engine Oil
Replace Engine Oil Filter
Clean Radiator / Oil Cooler and Other
Cooling System
Engine
Drain Water and Sediment from Fuel
Tank
Replace Fuel Main Filter Element
Check Engine Cylinder Head Bolts
Check Engine Compression Pressure
Check and Clean Starter and Alternator
Replace DEF/AdBlue® Supply Module
Filter Element
Change Coolant
Check and Clean Aftertreatment Device
Replace DEF/AdBlue® Tank Water Supply
Inlet Filter
Clean and Replace Air Cleaner Element
f
NOTE:
 *3 Shorten maintenance intervals when the machine is operated under severe conditions or when the machine is
continuously operated for a long period of time.
 *5 Every 1000 hours or 1 year whichever comes first.
MAINTENANCE
Item for check
: First time replacement or cleaning only
Operating hours
10 50 100 250 500 1000 2000 3000 4500
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*3
Every 2 years or 2000 hours 
As required, when regeneration indicator comes ON
As required, when DEF spills while filling
When indicator comes ON or
After six cleaning or once a year 
7-12
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*5
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*5
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