This provides a direct replacement for the Lycoming vacuum pump pad adapter. Its unique design offers both a standard vacuum pump pad adapter AND provision for inverted oil pickup. The vacuum pump pad is often used for a B&C spline-driven alternator, such as the SD8 or SD20.
Aircraft with oil systems using the standard "T" fitting on the firewall will typically experience a 3 to 5 second drop into the “yellow” oil pressure range after rolling inverted. However with this installed, the oil pressure will have a momentary blip or “wiggle” on the oil pressure gauge as the ball valve switches ends. As a result, the engine receives better lubrication and prop surges are lessened.
The comes with oil seal installed, gaskets, and an MS20822-10D 90 degree fitting. Just slip the existing vacuum pump gear and thrust washer in, and it is ready for installation on the engine. The standard Lycoming vacuum pump gear and washer will fit (gear and washer not included).
Alternate PN: VAC-2/4
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
B&C BC704-H INVERTED OIL PICKUP, 4CYL LYC
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