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TEO-540-A1A Engine Installation and Operation Manual
Figure 9
Oil System Schematic
The oil pump is in the accessory housing.
The wet sump-type Lubrication System supplies oil to the oil galleys in the crankcase and to the
engine in all altitudes and atmospheric conditions. There are two drain plugs in the bottom of the oil
sump, one on each side. A threaded oil plug is on the left side of the oil sump for removal of the
suction screen.
Six oil nozzles, one at each piston, supply positive internal piston cooling. An airframe-supplied oil
cooler is necessary. Oil is supplied to and returned from the oil cooler by ports in the accessory
housing. An oil cooler bypass valve in the accessory housing controls oil flow to the cooler. The
airframe-supplied oil cooler keeps the oil at the correct temperature to prevent overheating.
Oil circulation in the engine is as follows:
1. The oil pump pulls oil from the oil sump through a suction screen.
System Description
© 2018 Avco Corporation. All Rights Reserved
Page 12
October 2018
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