Crank drive, cylinder block
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Crank drive, cylinder block
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3.
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Main bearing journal (guide bearing)
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4.
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Colour coding on crankshaft
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5.
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Colour coding of bearing shells
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6.
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Marking on bearing shells
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Dimensions, crankshaft
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Ø Main bearing journal
1 - 5
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Colour coding
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Normal dimension, mm
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54,980 - 54,997
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brown
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54,980 - 54,997
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Green
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undersize (0.25), mm
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54,730 - 54,747
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Brown/blue
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54,730 - 54,747
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Green/blue
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undersize (0.50), mm
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54,482 - 54,495
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Brown/white
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54,482 - 54,495
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Green/white
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Ø Big-end journal, 1 - 4
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Normal dimension, mm
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42,971 - 42,987
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-
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undersize (0.25), mm
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42,721 - 42,737
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Blue
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undersize (0.50), mm
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42,471 - 42,487
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White
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Width of main bearing journals 3 (guide bearing)
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Normal dimension, mm
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26,000 - 26,052
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-
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undersize (0.20), mm
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26,200 - 26,252
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-
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undersize (0.40), mm
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26,400 - 26,452
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-
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Crankshaft bearing, 1, 2, 4, 5
Upper big-end bearing shell
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Colour coding
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Thickness
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Designation
GM 74, GM 985, GM 15
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Normal dimension, mm
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brown
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1,987 - 1,993
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256 N
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Green
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1,993 - 1,999
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257 N
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undersize (0.25), mm
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Brown/blue
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2,112 - 2,118
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258 A
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Green/blue
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2,118 - 2,124
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259 A
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undersize (0.50), mm
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Brown/white
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2,237 - 2,243
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260 B
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Green/white
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2,243 - 2,249
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261 B
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Lower big-end bearing shell
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Normal dimension, mm
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brown
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1,987 - 1,993
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256 N
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Green
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1,993 - 1,999
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257 N
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undersize (0.25), mm
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Brown/blue
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2,112 - 2,118
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258 A
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Green/blue
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2,118 - 2,124
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259 A
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undersize (0.50), mm
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Brown/white
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2,237 -2,243
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260 B
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Green/white
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2,243 - 2,249
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261 B
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Engine
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Z 18 XE
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Permitted big-end bearing clearance, mm
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0,005 - 0,059
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Permitted crankshaft end float, mm
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0,100 - 0,202
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Permitted rotational deviation, mm
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0,03
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Crankshaft bearing 3
(guide bearing)
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Upper big-end bearing shell
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Colour coding
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Thickness
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Designation
GM 74, GM 985, GM 15
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Normal dimension, mm
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brown
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1,987 - 1,993
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859 N
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Green
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1,993 - 1,999
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860 N
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undersize (0.25), mm
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Brown/blue
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2,112 - 2,118
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861 A
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Green/blue
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2,118 - 2,124
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862 A
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undersize (0.50), mm
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Brown/white
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2,237 - 2,243
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863 B
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Green/white
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2,243 - 2,249
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864 B
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Lower big-end bearing shell
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Normal dimension, mm
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brown
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1,987 - 1,993
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859 N
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Green
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1,993 - 1,999
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860 N
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undersize (0.25), mm
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Brown/blue
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2,112 - 2,118
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861 A
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Green/blue
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2,118 - 2,124
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862 A
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undersize (0.50), mm
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Brown/white
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2,237 -2,243
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863 B
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Green/white
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2,243 - 2,249
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864 B
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Width of crankshaft bearing 3 (guide bearing)
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Colour coding
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Width
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Designation
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Normal dimension, mm
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Brown/green
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25,850 - 25,900
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-
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undersize (0.25), mm
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Brown/blue
Green/blue
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26,050 - 26,100
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-
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undersize (0.50), mm
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Brown/white
Green/white
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26,250 - 26,300
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-
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Big-end bearing
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lower big-end bearing shell
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Colour coding
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Thickness
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Designation, GM 985.3
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Normal dimension, mm
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-
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1,485 - 1,497
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264 N
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undersize (0.25), mm
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Blue
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1,610 - 1,622
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265 A
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undersize (0.50), mm
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White
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1,735 - 1,747
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266 B
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Upper big-end bearing shell
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Normal dimension, mm
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-
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1,485 - 1,497
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264 N
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undersize (0.25), mm
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Blue
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1,610 - 1,622
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265 A
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undersize (0.50), mm
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White
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1,734 - 1,747
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266 B
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Permitted big-end bearing play
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mm
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0,019 - 0,071
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