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.
Note:
If you have a problem getting a good oil level reading on dipstick, rotate the level gauge 180° and
re-insert for check.
b) Watch the oil pressure warning lamp. If the lamp blinks, it may be oil pick-up screen is not covered with
oil. Check oil level gauge. Add oil to the oil pan, if required. Do not overfill. If level is correct and the
status still exists, see your DEALER for possible switch or oil pump and line malfunction.
Note :
Oil pressure will rise as RPM increases, and fall as RPM decreases. In addition, cold oil will
generally show higher oil pressure for any specific RPM than hot oil. Both of these conditions
reflect normal engine operation.
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