42.1
DESCRIPTION AND OPERATION OF CYLINDER BLOCK AND RELATED PARTS
The cylinder liners are designed as "bottom stop" cylinder liners which means that the cylinder
liners are installed with a lower collar in the cylinder block. This design allows for a shorter
distance between cylinders and a more compact design for the cylinder block. Each cylinder liner
has two sealing rings: the upper sealing ring seals the upper coolant jacket to the cylinder block
bore; the lower sealing ring seals the lower coolant jacket to the cylinder block bore.
1. Bolt, Front Cover to Cylinder Block
13.Dowel Pin
2. Front Crankshaft Seal
14. Expansion Plug, Cooling Water Duct
3. Front Cover
15. Pin
4. Gasket, Front Cover to Cylinder Block
16. Expansion Plug
5. Expansion Plug, Front Oil Duct Intake
17. Coolant Drain Plug
6. Expansion Plug, Front Oil Duct Outlet
18. Dowel Pin
7. Expansion Plug, Connector Front Oil Duct Outlet
19. Dowel Pin, Crankshaft Bearing Cap
8. Bottom Cylinder Liner Seal Ring
20. Piston Oil Spray Nozzle
9. Cylinder Liner
21. Bolt, Oil Spray Nozzle
10. Top Cylinder Liner Seal Ring
22. Main Bearing Cap
11. Expansion Plug, Connector Crankcase Ventilation
23. Bolt, Crankshaft Bearing Cap to Cylinder Block.
12. Plug
Figure 42-2
Cylinder Block, Cylinder Liners and Related Parts
The cylinder block has 1.5 mm counterbores machined on top for the cylinder head to cylinder
block sealing surface. The lubrication and coolant holes in the cylinder block supply the cylinder
head with oil and coolant. This allows for a superior sealing pressure between the gasket,
cylinder head and cylinder block.
The cylinder block uses replaceable, wet-type cylinder liners.
All information subject to change without notice.
42-4
DDC-SVC-MAN-0081 2010
Copyright © 2010 DETROIT DIESEL CORPORATION
Summary of Contents for EPA07
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