Hitachi ZW 120-6, Operator'S Manual

Page: 230 / 364

MAINTENANCE
7-12
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.
 : First time replacement or cleaning only
Section Item for check
Operating hours
Page
10 50 100 250 500 1000 2000 3000 4500
Engine
Check Engine Oil Level  7-27
Check Coolant Level  7-67
Check Accelerator Pedal Operation, and
Exhaust Gas Color and Noise
 7-98
Check Fuel Level  7-56
Check Drive Belt  7-68
Drain Fuel Pre-Filter  7-59
Check Sound Absorbing Mat Around
Engine
 7-100
Check DEF/AdBlue® Level  7-117
Check Fuel Hoses   7-63
Change Engine Oil  7-28
Replace Engine Oil Filter  7-30
Clean Radiator / Oil Cooler and Other
Cooling System
*3

7-70
Drain Water and Sediment from Fuel
Tank

7-58
Replace Fuel Main Filter Element

7-61
Check Engine Cylinder Head Bolts
*5

7-101
Check Engine Compression Pressure
*5

7-101
Check and Clean Starter and Alternator
 7-101
Replace DEF/AdBlue® Supply Module
Filter Element

7-122
Change Coolant
Every 2 years or 2000 hours  7-69
Check and Clean Aftertreatment Device
As required, when regeneration indicator comes ON 7-114
Replace DEF/AdBlue® Tank Water Supply
Inlet Filter
As required, when DEF spills while filling 7-122
Clean and Replace Air Cleaner Element
When indicator comes ON or
After six cleaning or once a year

7-65
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.