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TEO-540-A1A Engine Installation and Operation Manual
Propeller Drive
The flange-type propeller shaft, an integral part of the crankshaft, conforms to SAE Specification
AS127, Type 2. This direct drive propeller is attached to the crankshaft with six bolts. Oil is supplied
through the propeller shaft for a single acting controllable pitch propeller. The engine must be
approved by Lycoming for use with an FAR 23.1305 certified propeller system which is independent
of the engine installation.
The propeller must have mechanical stop/limits that prevent destructive effects to the engine if an
EECS propeller governor control fault occurs or if a speed modulation fault occurs.
The propeller governor drive is on the left front half of the crankcase.
Fuel System
The fuel system (Figure 7) can support continued engine operation throughout its flow and pressure
range.
The engine fuel system is made up of a three-position engine-driven fuel pump, in-line fuel filter,
fuel hoses, fuel rails, six electronic fuel injectors, fuel manifold, and fuel regulator adapter manifold
assembly.
Figure 7
TEO-540-A1A Engine Fuel System
The crankshaft operates the fuel pump. The fuel pump is attached to a machined pad on the
accessory housing. The fuel pump supplies fuel through fuel hoses connected to an electronic fuel
injector on the intake port of each engine cylinder. The 10-micron back-up fuel filter on the engine is
upstream of the fuel injectors. The airframe fuel filter is the primary filter for removal of dirt and
contamination from fuel before it enters the engine.
The fuel system has a removable 10-micron filter and sediment trap to collect debris from fuel.
© 2018 Avco Corporation. All Rights Reserved
System Description
October 2018
Page 9
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