EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE
22.1 DESCRIPTION AND OPERATION OF CRANKCASE BREATHER
The crankcase breather is located below the turbocharger on DD Platform engines, next to the
starter on the right hand side of the cylinder block. The crankcase breather has the primary task of
regulating the pressure in the crankcase as well as cleaning discharged blow-by gases. The gases
from the crankcase contain engine oil that can lead to adverse effects on engine emission levels.
The blow-by gas produced by the engine passes into the blow-by gas inlet in the crankcase
breather housing. In the housing, the blow-by gas
fl
ows to the centrifuge. The centrifuge drive
gear is driven by pressurized engine oil, causing the centrifuge to turn. The centrifugal force
that is created causes the blow-by gas to be pushed against the inside wall of the housing. The
engine oil contained in the blow-by gas runs along the inside wall downwards and
fl
ows to the
outlet for the engine oil that has been separated back into the oil pan. The cleaned blow-by gas
fl
ows to the outlet for blow-by gas to the atmosphere. The crankcase breather is maintenance
free for the working life of the component.
1. Bolt
7. Inlet Tube
2. Gasket
8. Bolt
3. Outlet Tube
9. Bolt
4. Bolt
10. Seal
5. Gasket
11. Crankcase Breather
6. Gasket
Figure 22-1
EPA07 Crankcase Breather and Related Parts
All information subject to change without notice.
DDC-SVC-MAN-0081 2010
Copyright © 2010 DETROIT DIESEL CORPORATION
22-3
Summary of Contents for EPA07
Page 1: ......
Page 2: ......
Page 287: ...23 OIL FILTER Section Page 23 1 REPLACEMENT OF THE OIL FILTER 23 3 ...