Cooling System - Hitachi ZW 120-6 Operator's Manual

G. Cooling System
Coolant
Use fresh water or normal tap 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 the air temperature is expected to fall below 0 °C (32 °F),
fill the cooling system with a genuine Hitachi Long-Life
Coolant (LLC) and soft water mix.
As a general rule, the ratio of LLC should range between 30
% and 50 % as shown in the table below. If the ratio is below
30 %, the system may develop rust, and if it is above 50 %,
the engine may overheat.
Precautions for handling antifreeze
d
WARNING: Antifreeze is poisonous.
 Antifreeze is poisonous; if ingested, it can cause
serious injury or death. Induce vomiting and get
emergency medical attention immediately.
 If antifreeze is accidentally splashed into eyes, flush
with water for 10 to 15 minutes and get emergency
medical attention.
 When storing antifreeze, be sure to keep it in a
clearly marked container with a tight lid. Always
keep ANTIFREEZE out of the reach of children.
 Use attention to fire hazards. Coolant is specified as a
dangerous substance in the fire protection law.
 When storing or disposing of antifreeze, be sure to
comply with all local regulations.
Mixing
Air temperature ratio
[%]
-10 °C (14 °F) or
30
higher
-20 °C (-4 °F) or
40
higher
-30 °C (-22 °F) or
50
higher
MAINTENANCE
Coolant Capacity: 16 L
Coolant Soft Water
liters US gal liters US gal
4.8 1.3 11.2 3.0
6.4 1.7 9.6 2.5
8.0 2.1 8.0 2.1
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