WinGD X72 Maintenance Manual

Maintenance1132−2/A1
Winterthur Gas & Diesel Ltd.
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5. Main Bearing Shell − Inspection
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 Scotchbritet to remove light scratches and running marks.
CAUTION
Damage Hazard: Do not use a scraper in the running area of the
bearing shell. Damage to the bearing shell will occur.
4) If the running marks are not symmetrical (axial or radial), speak to, or send a
message to WinGD.
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 cover and bearing shell 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 Shell − Installation
1) Apply a very thin layer of Molykote paste G to the rear face of the bottom bearing
shell, before each installation.
2) Make sure that the crankshaft pin and the running surface of the bearing shell are
clean and fully lubricated with clean engine oil.
Note: The bearing shells have different dimensions. For bearing shell No. 1, use
the dismantling tool 94118B and the lifting plate 94119. For bearing shells
No. 2 to No 8 use the dismantling tool 94119C and the lifting plate 94119A.
3) Attach the dismantling device (94118A/B) to the front face of the bottom bearing
shell.
4) Attach the lifting tool (94116A/B) to the bearing shell.
5) Use the applicable equipment as follows:
D For the bearing shell No.1, use the engine room crane and the spur-geared
chain block to lower the bearing shell in position on to the crankshaft.
D For the bearing shells No.2 to No. 8, use the spur geared chain blocks, the
roller support 94117A and the manual ratchet to lower the the bearing shell
in position on to the crankshaft.
6) Put the ropes of the dismantling device (94118A/B) below the crankshaft pin and
connect them to the lifting plate (94119).
7) Remove the lifting tool (94116A/B).
2015
Main Bearing − Removal and Installation

WinGD X72 Specifications

General

Brand	WinGD
Model	X72
Category	Engine
Language	English