Maintenance
3425−1/A1
Winterthur Gas & Diesel Ltd.
9/ 9
3.5 New Piston Rings − Installation
CAUTION
Damage Hazard: Do not open the piston rings too far. This will
cause damage to the piston rings.
Note: Make sure that the mark TOP, on the piston ring, points up.
Note: For the ring types and their locations, see Table 3.
1) Measure and record the thickness of the chrome-ceramic layer on each piston
ring. This will help you monitor the wear rate during operation.
2) Use the tool (94338, Fig. 4) to install the bottom piston ring (4, Fig. 7) to the
piston head.
3) Use the tool (94338) to install the middle piston ring (3) to the piston head.
4) Use the tool (94338) to install the top piston ring (1) to the piston head. Make
sure that the ring clearance (5) is opposite the ring clearance (2) of the middle
piston ring (3).
5) Refer to the Operation Manual, 0410−1 for the running-in procedure for new
piston rings.
4. Piston Rings − Storage
Keep the piston rings in their original packages in a dry area. Make sure that the
piston rings are in a horizontal position on a flat surface.
To prevent damage, be careful when you prepare the piston rings for installation and
during movement.
Piston Rings: Wear of Piston Rings and Ring Grooves
2015
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