Installation manual

90-898305

3-4

Air Compressor Exploded View

Air Compressor System

DESCRIPTION

• Air from inside the engine cowl is drawn into compressor through the

flywheel cover or plenum.

• Flywheel cover contains a filter to prevent ingestion of debris

• A restrictor is located between the filter and the compressor

• Restrictor lowers intake noise

• Restrictor should be removed at altitudes over 5,000 ft

• The compressor is driven by a serpentine belt from the crankshaft

• The air compressor is a single cylinder unit, containing:

• crankshaft

• connecting rod

• piston

• rings

• bearings

• reed valves

• Compressor is water cooled to lower the temperature of the air charge

• Compressor is lubricated by the engine oil pump

FUNCTION

• Piston moves down, pulling air through the filter & reed valves, into the

cylinder

• Piston moves up, intake reeds close & exhaust reeds open, forcing the

compressed air into the hose leading to the fuel rails

FLOW

• Air/fuel rails have a fuel passage and an air passage

• Air passage is common between all the cylinders on the rail

• Hoses connect the rails and the air compressor

• The air pressure regulator limits the amount of air pressure in the air

passages to about 10 psi below the fuel in the fuel passages

• Air exiting the air pressure regulator is routed to the exhaust adaptor and

exits through the propeller

Notes

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