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DESCRIPTION & OPERATION
Page 37
Cylinder Block
The cylinder block is a single-piece design made
of high-strength alloyed gray cast iron. The deep
skirt extends well below the crankshaft center line
and incorporates seven main bearings. The
bearing caps are made of ductile iron and use
buttress screws at the intermediate locations.
Replaceable wet-dry sleeves line the cylinder
bore.
Due to the large camshaft diameter, the cam bore
position is shifted up and outboard to operate the
unit pumps and provide cam-to-crank clearance
(Figure 40). To accommodate this change in cam
position, the push rod holes are angled four
degrees and the air compressor angled outboard.
The crank and cam timing gears do not mesh
directly, but power transmission occurs through
an idler gear mounted in an idler gear bore in the
front face of the cylinder block. The right-front
flange on the cylinder block provides a mounting
surface for the fuel supply pump.
40
Figure 40 — Cylinder Block
5_106_00.bk Page 37 Friday, August 4, 2000 11:17 AM
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