Connecting rod bearing cap
Front main bearing cap
Crankshaft timing gear
Main bearing cap
Figure 91. Checking crankshaft end play.
(16) Install the key (32, fig. 82), keyway plug (31), and press the fan drive pulley on the crankshaft (19).
(17) Install the starting jaw washer (30) and starting jaw (29).
181. Cylinder Block
a. General. The cylinder block of this engine has a main frame with the cylinder and crankcase cast as an integral
part. The block has large water jackets which surround cylinders and valves to provide sufficient cooling. The intake valve
seats are machined on the cylinder block surface. The exhaust valve seats are replaceable and can be removed when
damaged, worn, or cracked.
b. Inspection. Submerge the cylinder block in a strong caustic solvent and let it soak for 2 hours. Remove the
cylinder block and clean it thoroughly with live steam or air pressure. Inspect the block for cracks, breaks, and warpage.
Inspect all water passages and see that they are not plugged with rust, scale, dirt, or foreign matter.