Parker FG-K17401-KW, Instruction Manual

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MA-K17510-KW LinerSCAN manual ISSUE P.doc Page 59 of 93
6.3 Part Replacement
When a liner or piston rings are changed a predictable wear debris profile typically emerges and the
real world data from on liner replacement can be seen below:
Figure 2 Actual bedding in data after liner change
Engine manufacturers know this process and advise increasing the cylinder lubricant feedrate for a
recommended time following component replacement or after scuffing.
If this time is too long oil is wasted, if the time is too short, then there is possibility for damage. This
bedding in period is also dependent on various parameters such as engine load and fuel sulphur, so
having feedback to show when the wear rates have returned to normal levels is advantageous.
Experience with LinerSCAN installations has shown, that bedding in can take vastly different lengths
of time; 80 to 1000+ hours for iron levels to return to normal. During the bedding in period it has also
been proved that liners and rings are considerably more susceptible to sudden and severe wear
events. This is possibly due to the reduced clearance between the sliding surfaces.