Crankshaft Reassembly - Isuzu NHR 4J Series Workshop Manual

6A – 36 GENERAL ENGINE MECHANICAL
Main Bearing
Bore Diameter mm (in.)
Size Mark Inside Diameter
73.987~74.000
1
(2.9129~2.9134)
73.975~73.987
2
(2.9124~2.9129)
Crankshaft
Main Journal Diameter mm (in.)
Size Mark Outside Diameter
69.927~69.942
1 or -
(2.7530~2.7536)
69.922~69.927
2 or -
(2.7528~2.7530)
69.917~69.922
3 or -
(2.7526~2.7528)
69.927~69.942
1 or -
(2.7530~2.7536)
69.922~69.927
2 or -
(2.7528~2.7530)
69.917~69.922
3 or -
(2.7526~2.7528)
REASSEMBLY
13. Crankshaft
• Install the main bearings to the cylinder body and the
main bearing caps.
• Be sure that they are positioned correctly.
• Apply new engine oil to the upper and lower main
bearing faces.
• Carefully mount the crankshaft.
• Apply engine oil to the thrust washer.
6A-36-1.tif
• Assemble the thrust washer to the No.3 bearing
journal. The oil grooves must face the crankshaft.
6A-36-2.tif
Crankshaft
Oil Clearance
Bearing
mm (in.)
Size Mark
0.035~0.061
Black
(0.0014~0.0024)
0.032~0.058
(0.0013~0.0023)
Blue
0.037~0.063
(0.0015~0.0025)
0.031~0.056
(0.0012~0.0022)
Green
0.036~0.048
(0.0014~0.0019)
0.033~0.058
Black
(0.0013~0.0023)