Teledyne TSIO-360-RB, Maintenance Manual

Page: 190 / 206

22-4
Connecting Rod - The connecting rods are made of aircraft quality steel. The connecting rod large
diameter end, which attaches to the crankshaft crankpin or rod journal, is fitted with a cap and two
(2) piece bearing. The bearing cap is held to the main rod by special bolts and nuts.
A split steel backed bronze bushing is pressed into the piston pin end and machined for a precision
fit. Weight variation of connecting rods in opposing bays, Example: #1 and #2 connecting rods, is
limited to 1/2 ounce/14 grams.
FIGURE 22-3. CONNECTING ROD DESCRIPTION
Camshaft - The forging is machined on four main journals, nine cam lobes and the gear mount
flange at the rear of the camshaft. The main journals are supported in the crankcase by machined
bearing saddles. The hydraulic tappets move inward and outward in their bores by the eccentric
shape of the cam lobes. The lobes and journals are ground and hardened. Movement of the
tappets open and close the intake and exhaust valves within the cylinder by mechanical linkage of
the pushrods and rocker arms. Valve opening and closing is synchronized with piston position by
timing the camshaft and crankshaft gears. Four unequally spaced bolts secure the gear to the
camshaft and insure proper positioning, locating the gears timing mark in relation to the cam lobes.
The camshaft gear has internal teeth for driving the oil pump gear and if installed a gear driven
alternator or generator. A front mounted, keyed bevel gear drives the governor driven bevel gear
which drives the fuel pump through a common shaft.
FIGURE 22-4. CAMSHAFT DESCRIPTION