CHAPTER 79
PAGE 3
MAINTENANCE MANUAL EXTRA 300LT
PAGE DATE: 7. July 2010
79-00-00 GENERAL
The EXTRA 300LT is equipped with a modification of a
Christen Inverted Oil System (CHRISTEN 801 series).
Maintenance work or overhaul of this system requires con-
sultation of the manufacturer. (Refer to Christen Product
Manual and Lycoming Operaton and Installation Manual
(refer to chapter 1). Additionally, the lubrication system of
the EXTRA 300LT has a single oil cooler which is connected
to the engine by flexible tubing.
79-01-00 Christen Inverted Oil System
Description and Operation
The standard Christen 801 Inverted Oil System is a kit-form
accessory for Lycoming aircraft engines which permits
normal engine lubrication, with minimal oil loss, during
aerobatic flight. When installed, it becomes a self-contained
extension of the normal aircraft engine oil and breather
systems. As the system control valves are gravity-operated,
no connection to aircraft power sources is required (refer to
figure 1 and 2).
The system works in all inverted and negative-g flight
conditions and is particularly suited for high-performance
aircraft used for unlimited-class aerobatic competitions.
The need for modification of the standard Christen 801
Inverted Oil System results from installation requirements
for different system components of the Lycoming engine.
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