Engine Description
Teledyne Continental Motors, Inc.
TM
2-6
IOF-550 Permold Series Engine Maintenance Manual
1 April 2007
2-2.2. Engine Drive Train
When starting the engine, torque is transmitted from the starter through the starter adapter
components to the crankshaft gear. As the worm gear in the adapter is turned, a spring
mounted on the hub is tightened to grip the knurled drum of the shaft gear. After starting,
the spring returns to its normal position releasing the shaft gear and disengaging the
starter.
Torque is transmitted to the alternator by a face gear mounted on the crankshaft. Torque
from the crankshaft is transmitted by the crankshaft gear directly to the idler gear and the
camshaft gear. The idler gear rotates in a counter-clockwise direction to drive the
magneto drive gears. Optional accessories mounted on the aft side of the accessory case
are driven by the internal splines of the magneto drive gears.
The fuel pump coupling is connected directly to the crankshaft gear. The splined end of
the oil pump drive gear mates with the internal splines of the camshaft gear and transmits
torque to the oil pump driven gear. The governor drive bevel gear is physically attached
to the end of the camshaft; it meshes with the governor driven bevel gear to provide
power to the propeller governor.
STARTER
WORM DRIVE
SHAFT
ACCESSORY
DRIVE GEARS
CRANKSHAFT
GEAR
CRANKSHAFT
STARTER SHAFT
GEAR
TACHOMETER
SHAFT GEAR
OIL PUMP
DRIVE GEAR
OIL PUMP
DRIVEN GEAR
CAMSHAFT GEAR
ALTERNATOR
DRIVE GEAR )
ALTERNATOR
DRIVEN GEAR
GOVERNOR DRIVE
BEVEL GEAR
GOVERNOR DRIVEN
BEVEL GEAR
CAMSHAFT
STARTER WORM
WHEEL
IDLER GEAR
ASSEMBLY
Figure 2-4.
Engine Drive Train