Maintenance
3425−1/A1
Winterthur Gas & Diesel Ltd.
3/ 9
2.2 Rate of Wear
The rate at which the the chrome-ceramic layer becomes worn is related to the
operation conditions. If a piston ring that has some wear of the chrome-ceramic layer
is found (see Fig. 2), do an overhaul of the unit as soon as possible.
Chrome-ceramic
Layer is Worn
Fig. 2
With regular procedures to measure the chrome-ceramic layer, you can calculate the
rate of wear for each piston ring.
You can continue to use the piston rings if the remaining chrome-ceramic layer is
more than the limits that follow:
D Top piston ring, more than 0.05 mm
D Middle and bottom piston rings, more than 0.02 mm
If the thickness of the chrome-ceramic layer is less than the limits given, you must
replace the applicable piston ring.
2016
Piston Rings and Grooves − Rate of Wear Three Piston Rings
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