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Hitachi ZAXIS 120-6 class User Manual

Hitachi ZAXIS 120-6 class
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7-15
MAINTENANCE
G. Cooling System
Parts Quantity
Interval (hours)
Page
8 50 100 250 500 1000 2000
1. Check Coolant Level 1 7-93
2. Check and Adjust Fan Belt Tension 1

7-95
3. Change Coolant
ZX120-6 class 21 L
Twice a year* 7-97
ZX160-6 class 24 L
ZX200-6, 240-6 class 28 L
ZX300-6 class 41 L
ZX330-6 class 40 L
4. Clean Radiator, Oil Cooler and Inter
Cooler Core
Outside 1
7-99
Inside 1 Once a year 7-99
5.
Clean Oil Cooler, Radiator and Inter Cooler Front
Screen
1
7-101
6. Clean Air Conditioner Condenser 1
7-101
7. Clean Fuel Oil Cooler 1
7-101
8. Drain Intercooler 1

7-102
: Shorten the maintenance interval when the machine is operated in dusty areas.

: Maintenance required only during first time check.

: If there is a risk of freezing, remove condensate after operating the machine. (only ZX120-6)
*: When genuine Hitachi Long-Life Coolant is used, change every two years or 4000 operating hours, whichever
comes first.
IMPORTANT:
Use soft water as a coolant. Do not use strong acid or alkaline water. Use the coolant with genuine Hitachi
Long-Life Coolant (LLC) mixed by 30 to 50 %. If a coolant mixed with less than 30 % of Hitachi Long-Life
Coolant is used, service life of the cooling parts may be shortened due to damage by freezing or corrosion of
coolant system parts.
If mineral-rich water is used for coolant, water stain or scale may build up inside the engine or radiator,
causing overheating due to deterioration of coolant performance.
Condensate may accumulate inside the intercooler under some conditions of use. (only ZX120-6)
Freezing of condensate may cause damage to the intercooler. (only ZX120-6)
H. Electrical System
Parts Quantity
Interval (hours)
Page
8 50 100 250 500 1000 2000
1. Battery
Check Electrolyte Level 2 Every month 7-106
Check electrolyte specific gravity 2 Every month 7-108
2. Replacing Fuses Replace As required 7-109

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Hitachi ZAXIS 120-6 class Specifications

General IconGeneral
BrandHitachi
ModelZAXIS 120-6 class
CategoryExcavators
LanguageEnglish

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