Yanmar 2TNV70 - Crankshaft Reconditioning; Thrust Bearing

ENGINE
6-8
TNV IDI Service Manual
Crankshaft and Pistons Specifications
(Crankshaft Cont.)
Crankshaft Reconditioning
Thrust Bearing
Inspection Item Standard Limit
Reference
Page
Main Bearing Journal
Journal Outside
Diameter
1.8485 - 1.8489 in.
(46.952 - 46.962 mm)
1.8465 in.
(46.902 mm)
See
Inspection of
Crankshaft
on page 6-49
Bearing Inside
Diameter
1.8497 - 1.8505 in.
(46.982 - 47.002 mm)
-
Bearing Insert
Thickness
0.0791 - 0.0793 in.
(2.009 - 2.014 mm)
-
Oil Clearance
0.0008 - 0.0020 in.
(0.020 - 0.050 mm)
0.0047 in.
(0.120 mm)
Item Finishing Precision
Reference
Page
Connecting Rod Journal Undersize Finished Size
1.6418 - 1.6422 in.
(41.702 - 41.712 mm)
See
Reconditioning
the Crankshaft
on page 6-49
Main Bearing Journal Undersize Finished Size
1.8387 - 1.8391 in.
(46.702 - 46.712 mm)
Journal Radius
0.138 - 0.150 in.
(3.5 - 3.8 mm)
Journal Face Finish 0.8S (Super Polish)
Thrust Face Finish 1.6
Inspection Item Standard Limit
Reference
Page
Crankshaft End Play - All Models
0.0044 - 0.0098 in.
(0.111 - 0.250 mm)
0.0110 in.
(0.28 mm)
See Removal
of Crankshaft
on page 6-42
Bearing Thickness
0.0760 - 0.0780 in.
(1.930 - 1.980 mm)
0.0728 in.
(1.850 mm)
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