4. COMMISSIONING AND OPERATION
4.1. Preparation
At the time of initial commissioning of a new or overhauled engine make sure to have observed
the “Technical Information for the installation DAEWOO vehicle engines”.
•
Oil filler neck on cylinder head cover
Before daily starting of the engine, check the fuel, coolant and oil level, replenish if necessary.
The notches in the oil level gauge indicate the highest and lowest permissible oil levels.
The oil required in the sump is specified in the “Engine Specification”.
Important :
Do not fill above the top of the mark. Oil levels anywhere within the crosshatch are con-
sidered in the acceptable operating range. Over lifting will result in damage to the engine.
•
Cleanliness
Ensure outmost cleanliness when handling fuels, lubricants and coolants
4.2. Breaking-In
4.2.1. Operation of a new engine (Break-in)
Because the sliding surfaces of a new engine are not lapped enough, the oil film can be
destroyed easily by overload or overspeed and the engine life-time may be shortened.
Therefore the following things must be obeyed by all means.
Up to the first 50 hours
•
Engine should be run at fast idling until the temperature of the engine becomes normal
operating condition.
•
Overload or continuous high speed operation should be avoided.
•
High speed operation with no load should be prevented.
•
Abrupt start and stop of the engine should be avoided.
•
Engine speed must be under 70% of its maximum speed.
•
Maintenance and inspection must be accomplished thoroughly.
4.2.2. Check points for break-in
During the break-in (the initial running of the engine) period, be particularly observant as
follows :
a) Check engine oil level frequently. Maintain oil level in the safe range, between the “min.” and
“max.” marks on oil level gauge.
Note :
If you have a problem getting a good oil level reading on the oil level gauge, rotate the
oil level gauge 180
°
and re-insert for check.
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COMMISIONING AND OPERATION
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