Operation Manual

Section:
Page:
Engine:
Operating the Engine
4.6 Run-in Instructions
Engines which leave the manufacturer's works have been run in; thus run-in at site is not necessary.
Following servicing work on main and big-end bearings, pistons, piston rings and cylinder liners
the engine must be run in again.
The following run-in programs apply to the different drive types:
4.6.1 Drive type "Fixed-pitch propeller and comparable drives"
(Engine load is mainly dependent on speed, n = variable)
● Start engine, sections 4.1 and 4.2, and run at low speed for 5 minutes.
● Stop engine, section 4.4.
● Check bearings and crankshaft.
If the engine has warmed up noticeably, the cause must be locked for immediately and remedied.
● Start engine again and r un at low speed for 30 minutes.
● Stop engine again.
● Check bearings and crankshaft.
If the engine has warmed up noticeably, the cause must be locked for immediately and remedied.
● Start engine again and increase speed gradually according to the following table.
Run-in time Engine speed in %
in minutes of rated speed
60 35
30 45
60 55
15 35
45 70
15 55
45 80 With propeller drives, this part of the
15 65 program must not be run with the
45 90 vessel tied on!
15 70
45 95
● Check engine operating data and compare with those of repair / acceptance test record. In case of
major deviations cause must be locked for and remedied.
During the following 24 hours engine should not be run with control rod set to fuel stop and reduced
speed, nor with overload, in order to intensify run-in effect.
© 0996
4
4-5-01
S/BVM 628