How to Clean Diesel Engine Cooling System
by Starlight Generator dieselgeneratortechShangchai W
series diesel engine is the main part of Shangchai generator. The maintenance
of it very important for machine maintenance. The coolant system is a crucial
part for the machine, in order ensure the engine coolant to be good in cooling
and anti corrosion,the replacement of coolant and clearing of cooling system
are required every 2,000 hours or 2 years, whichever comes first.
Warning: At
operating temperature, engine coolant is hot and under pressure, and coolant
steam can cause personal injury. Do not remove the pressure cap on the radiator
until the engine stops and coolant temperature goes below 50℃. Slowly unscrew the pressure cap to release
the cooling system pressure.
Warning: The
anti-rust additive in the coolant contains alkali. Avoid skin contact with it
to prevent personal injury.
(1) Stop the
engine and wait until the temperature of the coolant falls to below 50℃. slowly unscrew the pressure cap to release
the cooling system pressure and remove it. Loosen the drain cock on the
radiator to completely drain the coolant in the radiator.
(2) Loosen
the water drain cock on the engine (on the fuel pump side and near the flywheel
housing), as well as the water drain cock on the water pump, and completely
drain the coolant in the cooling system
(3) Clean
the cooling system according to the following steps.
A. Install
and screw up all the drain cocks and plug, and add the sodium carbonate
solution (or the mixture of sodium carbonate and water that is available in
market) into the cooling system from the coolant filter.
Caution:
Each 23 L of water should be mixed with 0.5KG sodium carbonate. Do not use
caustic cleaner, or it will do harm to aluminum parts.
Caution:
Purge the air in the coolant system while adding the cleaning fluid. Pour the
cleaning fluid slowly to avoid air block. The cleaning fluid should be added up
to the bottom of the filter in the radiator and wait for about 3-5 minutes for
a full purge of air.
B. Start the
engine and keep it running for 5 minutes after the cleaning fluid temperature
has gone up to above 80℃, then stop the engine and
completely drain the cleaning fluid in the cooling system.
Caution:
During the whole cleaning process the pressure cap should not be on and the
engine runs without the cap on.
C. Add clean
water into the cooling system.
Caution:
Pour clean water slowly to avoid air block. Clean water should be added up to
the bottom of the filter in the radiator and wait for about 3-5 minutes for a
full purge of air.
D. Start the
engine and keep it running for 5 minutes after the water temperature has gone
up to above 80℃, then stop the engine and
completely drain the clean water in the cooling system.
Caution: If
the discharged water is still dirty, clean the cooling system again according
to the aforesaid steps until discharged water becomes clean.
(4) After
the cleaning, tighten the water drain cock on the radiator, and tighten the
drain cocks on the engine and water pump
(5) Add
coolant. Fill the cooling system with proper coolant. The total engine coolant
capacity is 56L
Caution: The
actual amount of coolant should refer to the equipment date.
Caution: Add
coolant slowly to avoid air block. Coolant should be added up to the bottom of
the filter in the radiator or meet the requirement of the equipment
manufacturer. Wait for about 2-3 minutes for a full purge of air.
(6) Install
the pressure cap on the radiator, start and run the engine until coolant
temperature reaches 80℃, then stop the engine and check
and wait until the coolant temperature falls to below 50℃. then open then pressure cap and recheck the
coolant level. Supplement properly, if necessary.
Replacing
air filter element
(1) Blow off
dirt on the filter with compressed air.
(2) Remove
the filter cover, remove and scrap the element.
(3) Cover
the compressor inlet from inside the air filter body with clean stuff to
prevent dirt from entering the intake system.
(4) Clean
the inside of the filter body.
(5) Check
the new filter element for any defects and remove the covering stuff from the
compressor inlet. Install the new element and make sure a sound seal at both
ends.
(6) Install
the air filter cover and the service indicator.
Caution: Be
sure that both end faces of the air filter are reliably sealed without leakage
after the air filter element has been changed.
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Created on Jan 22nd 2018 01:57. Viewed 456 times.
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Jan 23rd 2018 04:42