Daewoo ST Series Betriebsanleitung PDF herunterladen (Seite 26)

4.3. Cooling System

4.3.1. Coolant level check and refill

•

Replenish the deficient coolant in the expansion tank every day before running. The coolant

must be changed at intervals of 1,200 hours operation or six months whichever comes first.

If the coolant is being fouled greatly, it will lead engine overheat or coolant blow off from the

expansion tank.

•

Clean fresh water should be used for engine coolant.

•

Additional agent (35 ~ 40% anti-freeze and 3 ~ 5% anti-corrosion agent) should be mixed

with fresh water for engine coolant to prevent the cooling system problem like freezing,

corrosion and etc.

CAUTION : Suitable mixture of anti-freeze and anti-corrosion agent can protect the engine

corrosion from deteriorating and raises a boiling point, but by using unsuitable

mixture engine components like water pump impeller and water jacket of cylinder

block may be occurred a malfunction by any bad corrosion damage or cavitation.

(1) Coolant replenishment

Let the plug in the highest level of the water lines or the upper plug of wet turbocharger

open, and fill the coolant about three forth of the expansion tank slowly until the air bubbles

in water do not come out through the plug hole. Then reassemble the plug.

After filling the coolant, run the engine at the idle rpm for around 5 minutes and you will

find out the engine coolant level becomes lower than before cause of escaping the air

bubbles in water. Then stop the engine and replenish additional coolant properly.

(2) Coolant change

•

Open the pressure cap of

expansion to remove the air

pressure.

•

Loosen two drain plugs. One is

lower side of the oil cooler and

another is upper side of the

starter as figure.

•

After drain reassemble the plug

and replenish the coolant as same

as “(1) Coolant replenishment”.

CAUTION : When remove the pressure of the filler cap while the engine is still hot, cover the

cap with a cloth, then turn it left slowly to release internal steam pressure. This

will prevent a person from scalding by hot steam spouted out from the filler cap.

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EC5OM127

Drain plug

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