Workshop Manual

EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE

17.1 DESCRIPTION AND OPERATION O F CRANKSHAFT AND RELATED

PARTS

The crankshaft is made out of induction-hardened steel. The crankshaft bearing journals and

connecting rod journals are hardened in the boundary layer and then are ground. In order to avoid

vibrations, c ounterweights are cast onto the guide-ways. The crankshaft is mounted with seven

crankshaft bearing journals in the crankcase. There are oil holes located at the c rankshaft bearing

journal and the connecting rod journal through which the crankshaft bearing and connecting

rod bearing are lubricated.

NOTE:

The DD13 engine has four co unterweig hts, the DD15 and DD16 each h ave eight

counterweights.

NOTE:

The crankshaft throws on the DD16 are longer than on the DD15 crankshaft.

1. Cra nkshaft Bearing Journals 3 Counterweights (number varies by e ngine model)

2. Connecting Rod Bearing Journa ls Arrows show oi l passage locations

Figure

17-1

Cranks

haft

All information subject to change without notice.