Operation and Maintenance Manual SC9DF Electronically Controlled Diesel Engine for Agricultural Equipment
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engine (neutral position is not allowed), or with the foot brake; the exhaust brake function shall be applied if
equipped.
3.6 Running-In of a New or Overhauled Engine
When the engine is new or has been overhauled, run the engine for 60 hours in running-in condition and change its oil
thereafter before running it in full load condition so as to improve its moving parts working condition and its reliability
and service life.
The way of running-in varies from one engine application and loading manner to another. In principle, engine speed
and load in running-in process will be increased gradually with the running-in going on. Load should be 50%-80% of
its full one, and speed should not exceed 80% of its rated speed. If the engine is for generator sets with constant
speed, it is allowed to run-in at rated speed. However, long time running at idle or with too small load at the beginning
of running in is not recommended.
Do not run the engine at idle or with low load for a long-time either in running-in period or normal working period
thereafter. Continuous running at idle should not be longer than 10 minutes to avoid early wear due to carbon deposit
or engine performance being affected.
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