1.1 Cylinder Block
DETROIT DIESEL 53
Each cylinder liner is retained in the block by a flange
block bore. An individual compression gasket is used
at its upper end, which seats in the counterbore in the
at each cylinder.
When the cylinder head is installed, the gaskets and
seal rings compress sufficiently to form a tight metal-
to-metal contact between the head and the block.
The In-Line cylinder blocks were revised at the idler
gear hub mounting pads, to increase the rigidity of the
flywheel housing, by increasing two of the three
5 / 1 6 " - 18 bolt holes of each mounting pad to
3 / 8 " - 16 bolt holes (Fig. 7). The 3/8" - 16 bolt
holes were incorporated in engines beginning with
serial numbers 2D-903, 3D-011 and 4D-103. Revised
end plates, end plate-to-block gaskets and flywheel
housing are required with the change in bolt sizes.
Only the revised cylinder blocks are available for
service.
The In-Line cylinder blocks have also been revised to
improve the breathing characteristics and increase the
flow of the lubricating oil returning from the cylinder
head to the engine oil sump by the addition of two
vertical oil passages directly under the camshaft and
Fig. 3 - Air and Water Passages in In-Line
balance shaft at the front end of the cylinder block
Cylinder Block
(Fig. 8). Cylinder blocks with the vertical oil passages
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