Crankshaft Rod Journal Regrind Specifications; Crankshaft Rod Journal Radius - Regrind - Dodge D250 1990 Service Manual

Alternative Repair Procedures
Page9K-14
Base Engine Components
DODGETurbo Diesei
Crankshaft Rod Journal Regrind Specifications
Standard rod journal size: 69.000 ± .013mm [2.7165 ± .0005 inch]
Worn limit: 68.962mm [2.7150 inch]
Available Undersize Regrind To:
0.25mm [.0098 inch] 68.750 ± 0.013mm [2.7067 ± .0005 inch]
0.50mm [.0197 inch] 68.500 ± 0.013mm [2.6969 ± .0005 inch]
0.75mm [.0295 inch] 68.250 + 0.013mm [2.6870 ± .0005 inch]
1.00mm [.0394 inch] 68.000 ± 0.013mm [2.6772 + .0005 inch]
Ail rod journals to be parallel to front and rear main journals within 0.03mm [0.001 inch]
Out of roundness 0.005mm [0.0002 inch] maximum
Taper 0.005mm [0.0002 inch] maximum
Journals are to be ground in the opposite direction of rotation (clockwise as viewed from the front of the crankshaft).
Journals are to be polished in the same direction as engine rotation.
Crankshaft Rod Journal Radius - Regrind
Preferred Procedure
Smoothly blend a 4.00 ± 0.20mm [.1575 ± .0008 inch] radius to
the reground diameters and side faces.
Surface finish:
A = 0.8 micrometer [32 microinch] for a minimum of 45 degrees
into the fillet beyond the journal surface
B = 1.6 micrometers [64 microinch] for the remainder of the fillet
C = Journal surface 0.4 micrometer [16 microinch]
D = Original radius
E = New undercut radius