Breaking In - Daewoo D1146 Maintenance Manual

3.4. Breaking in

3.4.1. Preparations for breaking-in
Fill of new engine oil through the oil filler cap.
When measuring the oil level with the oil level gauge with the engine mounted, the
oil level must indicate about 10mm above the max. line.
Connect water hoses and fill up cooling water.
Connect the fuel hoses to the fuel tank and to top(radiator or surge tank).
Check the air bleeding of the fuel system.
Connect the electrical systems such as starter, air heater, etc. with power source.
3.4.2. 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 1,000km(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.
3.4.3. 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 dipstick.
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D1146/D1146TI/DE08TIS
MAINTENANCE MANUAL
Printed in Jan. 2001 PS-MMA0415-E1A