EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE
42.1 DESCRIPTION AND OPERATION OF CYLINDER BLOCK AND
RELATED PARTS
The cylinder block is the basic engine structure, establishing and maintaining the alignment
of all engine working parts. The cylinder block is made from an iron material. High strength
and low noise are features of the cylinder block, and is a result of the vertical and horizontal
reinforcements and the design of the oil return ducts.
The cylinder block lower collar design allows for a shorter distance between cylinders and a more
compact design for the cylinder block. Each cylinder bore is sealed to a cylinder liner with two
sealing rings: the upper sealing ring seals the upper coolant jacket to the cylinder block bore, and
the lower sealing ring seals the lower coolant jacket to the cylinder block bore.
1. Cylinder Liner
5. Lower Coolant Jacket
2. Top of Cylinder Liner
6. Lower Collar
3. Upper Sealing Ring
7. Lower Sealing Ring
4. Upper Coolant Jacket
8. Bottom of Cylinder Liner
Figure 42-1
Cylinder Liner
All information subject to change without notice.
DDC-SVC-MAN-0081 2010
Copyright © 2010 DETROIT DIESEL CORPORATION
42-3
Summary of Contents for EPA07
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