WinGD X92 - Page 133

Maintenance
1132−2/A2
Winterthur Gas & Diesel Ltd.
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5. Main Bearing Shell − Inspection
CAUTION
Damage Hazard: Do not use a scraper in the running area of the
bearing shell. Damage to the bearing shell will occur.
1) Use a soft cloth to clean the bearing shell.
2) Do a check of the bearing shell for damage e.g. breakouts or cracks.
3) Use Scotch-Britet to remove small scratches and running marks.
4) If the running marks are not symmetrical (axial or radial) speak to, or send a
message to Wärtsilä Service.
5) Replace the bearing shells if necessary.
6) Do an inspection of the surface of the bearing pin. If necessary, repair the surfaces
that have scratches.
6. Main Bearing Shell and Bearing Cover − Installation
CAUTION
Damage Hazard: Use only the applicable tools for installation. The
sizes of the bearing shells are different (narrow and wide).
The bearing shells and bearing covers have the marks DRIVING END and must be
installed in the bearing girder in their initial positions.
Before installation, make sure that the items that follow are clean and in good
condition:
D All tools
D The crankshaft pin
D The girder bore for the bearing shell
D Bearing shells.
6.1 Bearing Shells − Installation
1) Apply a thin layer of Molykote paste G to the rear face of the bearing shell.
2) Make sure that the crankshaft pin and the running surface of the bearing shell are
clean and fully lubricated with the clean engine oil.
Note: The bearing shells have different dimensions. For bearing shell No. 1, use
the tool 94118B and the plate 94119. For bearing shells No. 2 to No 8 use
the tool 94119C and the plate 94119A.
3) Attach the tool (94116A) to the bearing shell.
4) Use the applicable equipment as follows:
D For the bearing shell No.1, use the engine room crane and the chain
block (H2) to lower the bearing shell in position on the crankshaft.
D For bearing shells No.2 to No. 8, operate the chain blocks (H3, H4), the roller
support (94117A) and the manual ratchet (H1) to lower the bearing shell in
position on the crankshaft.
5) On the fuel side of the bearing shell, put the lifting plate (94119) in position.
6) Put the ropes of the tool (94118B) below the crankshaft pin and connect them to the
lifting plate (94119).
7) Remove the tool (94116A).
2016
Main Bearing − Removal and Installation