Man D2862 LE221, Руководство по ремонту

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CRANK MECHANISM
Checking the crankshaft and crankshaft
bearings
Checking the crankshaft bearing shell
expansion
Note
The difference between dimension A and
dimension B is the expansion of the
crankshaft bearings.
• Clean the bearing shells (2) and put them together
on a at surface as marked
• Check dimension A using a micrometer (1)
• Check dimension B using a micrometer (1)
If the maximum permitted expansion of 2.0 mm is
exceeded, new bearing shells must be tted.
Checking the crankshaft bearing shell inside
diameter
• Insert the crankshaft bearing shells into the
crankcase and crankcase lower section (3) as
marked
• Put on the crankcase lower section (3)
• Screw in the old mounting bolts (4) for the
crankcase lower section (3) and tighten them to
65 Nm
• Check the crankshaft bearing using the internal
calliper (2) in conjunction with the Dial gauge [146]
(1)
• Repeat the measurement at all the crankshaft
bearings
• Remove the crankcase lower section (3)
If the crankshaft bearing dimensions are out of
tolerance,
see Glyco main bearing dimensions, 334 ,
t new main bearing shells.
AE6 3st edition 345