Maintenance
3425−1/A1
Winterthur Gas & Diesel Ltd.
1/ 9
Wear of Piston Rings and Ring Grooves
Tools:
1 Inside micrometer 94101 1 Permascope MP0 94356
1 Feeler gauge 94122 (with instruments to
1 Piston ring tensioning device 94338 measure chrome-ceramic layers)
(for Straight Cut piston ring) 1 Calliper gauge
Piston ring tensioning device 94338A
(for Gas Tight piston ring)
1. General 1..........................................................
2. Piston Rings − Rate of Wear 2.......................................
2.1 Chrome-Ceramic Layer − Piston Installed 2.....................
2.2 Rate of Wear 3................................................
2.3 Service Life − Calculate 4......................................
3. Piston Ring Grooves 5..............................................
3.1 Piston Ring Clearance (Piston Installed) 5......................
3.2 Piston Rings − Removal 6.....................................
3.3 Piston Ring Clearance (Piston Removed) 6.....................
3.4 Used Piston Rings − Installation 8..............................
3.5 New Piston Rings − Installation 9..............................
4. Piston Rings − Storage 9............................................
1. General
Use the data in paragraph 2.1 and paragraph 2.3 to make an analysis of the of the
condition of the cylinder liner, piston and piston rings.
The wear rates are related to the type of fuel used, the engine load profile, ambient
conditions etc, during engine operation.
Visual inspections will show critical conditions of cylinder liners and piston rings after
a short time. For more data to monitor the cylinder liner and piston ring conditions,
see the Operation Manual 0750−1 Lubricating Oils.
When you measure and record the piston ring grooves, the data is used to calculate
the wear.
Refer to 0380−1, Piston Rings for the scheduled intervals.
Piston Rings
2014
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