New Holland SmartTrax T8.320 Service Manual page 40

Crankshaft
• The crankshaft are classified in three classes: there are
three classes for the connecting rod journals and three
classes for the main journals.
• The crankshaft journal sizes are stamped on the rear
flyweight for both the connecting rod journals and the
main journals.
• Six digits for the connecting rods and seven digits for
the mains.
• The crankshaft may have been ground - 0.127 mm un-
dersize from the factory. A (1) preceding the six digits
is a standard crankshaft, a (2) preceding is for a crank-
shaft that has been ground undersize.
• The main bearing bores in the block are classed 1,2,or 3
and are located on the rear of the block lower right hand
side. If the classifications are not found, the crankshaft
must be measured and classified for each journal.
Standard crankshaft connecting rod bearing selection
Standard crankshaft
connecting rod journals Class (1) Yellow paint
Class (1) 81.915 to 81.925
mm
Class (2) 81.925 to 81.935
mm
Class (3) 81.935 to 81.945
mm
NOTE: It may be necessary to mix two bearing shells in one journal.
0.127 mm under-size crankshaft connecting rod bearing selection
- 0.127 mm Standard
crankshaft connecting rod
journals
Class (1) 81.789 to 81.799
mm
Class (2) 81.799 to 81.809
mm
Class (3) 81.809 to 81.819
mm
Engine - Engine and crankcase
Green
Green
Red
Green
Red
Red
Connecting rod bore
Class (1) Yellow paint
Green/Black
Green/Black
Red/Black
Green/Black
Red/Black
Red/Black
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CRANKIDENTIFY
Connecting rod bore
Class (2) Green paint
Green
Yellow
Green
Green
Red
Green
Class (2) Green paint
Green/Black
Yellow/Black
Green/Black
Green/Black
Red/Black
Green/Black
18
Class (3) Blue paint
Yellow
Yellow
Green
Yellow
Green
Green
Class (3) Blue paint
Yellow/Black
Yellow/Black
Green/Black
Yellow/Black
Green/Black
Green/Black