Maintenance
2124−3/A1
Winterthur Gas & Diesel Ltd.
1/ 3
Removing the Wear Ridge, Re-dressing Lubricating
Grooves and Scavenge Ports
Tools:
1 Wear ridge grinding device
(optional)
94299
1. General
During operation, the cylinder liner becomes worn. As a result a ridge arise where the
top piston ring travel stops. Also, the lubricating grooves decrease in depth and the
corner radii of the scavenge ports become smaller.
Before each piston removal, measure the bore of the cylinder liner (for more data see
2124−1).
D After completing the reconditioning, clean the bore of the cylinder liner thoroughly
(particularly the lubricating grooves).
D Remove waste particles which may have passed into the scavenge space
through the ports.
D Actuate the cylinder lubrication until oil flows from all the lubricating points,
thereby flushing away any metal dust.
2. Preparation
1) Remove the cylinder cover (see 2708−1)
2) Remove all lubricating quills (see 2138−1).
3) Put suitable protection below the cylinder liner. This will keep particles out of the area
below the cylinder liner.
3. Unwanted material − removal
CAUTION
Make sure that you do no cause damage to the running surface of
the cylinder liner when you remove the unwanted material.
1) Read the data in the Instruction Manual for the grinding tool.
2) Attach the grinding tool (94299) to the cylinder liner (see the Instruction Manual and
Fig. 1).
3) Connect the grinding tool to a suitable air supply.
4) Use the grinding tool to carefully remove the unwanted material from the cylinder
liner.
5) Make sure that you get a radius as given in Fig. 1 (r = 8 mm).
2015
Cylinder Liner
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