Engine Description - Crankshaft and Connecting Rods
Fig. 7
Here we see the crankshaft and connecting rods.
The four connecting rods ride on the plain-bearing crankshaft in
lead-bronze bearing inserts. All connecting rods have bronze piston
pin bushings. All crankshaft journals are soft nitrided. Bearings 2
and 3 (seen from the clutch-end) are split-sleeve inserts. Bearing 4
may be replaced without disassembling the crankcase by removing the
timing gear cover.
Bearing 1 also takes up the crankshaft thrust. The flywheel,
which also carries the starter gear teeth, is attached to the
crankshaft by means of a gland nut and fixed in position by 8 aligning
dowel pins. The camshaft gear and the distributor drive gear are
locked to the crankshaft through Woodruff keys. The crankshaft pulley
is attached to the crankshaft through a hex bolt and locked with a
Woodruff key. The crankshaft is sealed in the crankcase through oil
seals located at the flywheel and crankshaft pulley ends.
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