Crankshaft Main Journal Radius - Regrind - Dodge D250 1990 Service Manual

Base Engine Components
DODGETurbo Diesel
Alternative Repair Procedures
Page9K«13
Crankshaft Main Journal Radius - Regrind
Preferred Procedure - All Main Journals
Smoothly Wend a 4.20 ± .020mm [.1654 ± .0008 inch] radius to
the reground diameters.
Surface finish
A = 0.8 micrometer [32 microinch] for a minimum of 45 degrees
the fillet beyond the journal surface.
B = 1.6 micrometer [64 microinch] for the remainder
of the fillet.
C = 0.4 micrometer [16 microinch] journal surface.
D = Original radius
E = New undercut radius
Optional Procedure - Not to be Used when Thrust Surface
Width is Reground
Smoothly blend a 1.25 ± -020mm [0.0492 ± .0008 inch] radius
to the reground diameters.
Surface finish:
A = 0.8 micrometer [32 microinch] for a minimum of
45 degrees into the fillet beyond the journal surface.
B = 1.6 micrometer [64 microinch] for the remainder of
the fillet.
C = Original radius
D = New undercut radius
E = 0.4 micrometer [16 microinch] journal surface.
Width of regrind for undercut radius
F = 34.500 ± .025mm [1.358 ± .001 inch]