IHI Shibaura SR525HP-S, Руководство оператора

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57
7. Inspecting and changing the
cooling water
Danger
● Do not open the radiator cap while the
engine is running or immediately after the
engine stops. Stop the engine and wait until
the engine has cooled down before opening
the cap. Otherwise, hot water gushes out
and you may be burnt.
Inspection
Open the bonnet and check if the water level in
the reserve tank is between the upper and lower
limits. If the water level is too low, supply
antifreeze from the water filler port of the reserve
tank.
Replacement
(1) Remove the radiator cap, loosen the drain
plug and drain the water in the radiator
completely.
(2) Loosen the drain cock on the right side of the
engine and drain the water in the engine.
(3) Wash the radiator inside in city water until no
dust or rust comes out.
* By supplying water mixed with radiator
detergent, idling the engine for more than 15
minutes and discharging the water, the
radiator inside can be more completely
cleaned.
(4) Tighten the drain plug, supply antifreeze to
the specified level, and add fresh water until
overflowing.
(5) Install the radiator cap, start the engine to
mix the antifreeze and fresh water.
<Handling of antifreeze>
Antifreeze acts to decrease the water freezing
temperature. Depending on the mixture ratio of
antifreeze, the freezing temperature varies. In
cold districts, select a safety density referring to
the table below. The antifreeze at the time of
factory shipment is based on the external
atmospheric temperature of –30
℃
.
Antifreeze mixing ratio
Ratio
Outside air
temperature
–
5 º C
–
10 º C
–
15 º C
–
20 º C
–
25 º C
–
30 º C
Water (%) 82 73 66 61 55 49
Antifreeze (%) 18 27 34 39 45 51
Drain cock
Full
Low
60