 (Click image for a larger view) | The revolutionary
VAC-2 adapter provides a direct replace- ment for the Lycoming
vacuum pump pad adapter casting. The VAC-2 design provides a
standard vacuum pump pad with provision for inverted oil pick-ups.
Normally there is a T fitting mounted on the firewall that supplies
the inverted oil. For many engines when this T-fitting is used,
the oil pressure will drop down into the yellow on the oil pressure
gauge for 3 to 5 seconds when inverted. On some aircraft this
drop in oil pressure causes the prop to cycle because of lack
of oil pressure. With the VAC-2 adapter installed you do not
have this drop in oil pressure. By using the VAC-2 adapter you
have
(1) the best inverted oil pickup,
(2) a stock vacuum pump pad adapter. Used
in place of Christen "T" fitting. VAC-2 comes complete
w/oil seal installed, gaskets. and MS 20822-10D fitting. Slip
vacuum pump gear assembly & washer into VAC-2 and install
on engine. The standard Lycoming vacuum pump gear assembly and
washer will fit into the B & C adapter. (Gear & washer
shown not included.) |