CHAPTER 79
PAGE 9
MAINTENANCE MANUAL EXTRA 300/SC
PAGE DATE: 1. August 2014
Modification of New Engines
When the engine shall be replaced, the following two engine
types can be ordered from Lycoming:
ENPL-RT10568
ENPL-RT10427
In any case the modifications as outlined below must be
performed for the use in an EXTRA 300SC.
Thereby observe the following:
• Use gasket B & C 707-304-1 provided with the VAC2-6
• Install gasket over the studs with "U" cutout towards the bot-
tom.
• Be shure that the 90° fitting of the VAC2-6 is at the 7 o'clock
position.
• Also refer to B & C Installation Instructions for VAC2.
When installing ENPL-RT10568
replace
Lycoming Adapter Assy., Vacuum pump 67536
by
B & C Inverted oil pick-up VAC 2-6 Assy
When installing ENPL-RT10427
replace
4 Lycoming short studs 25C-12 (1/4-20 x 1-1/2)
by
4 Lycoming long studs 25C-21 (1/4-20 x 2-5/8)
and replace
Lycoming Adapter, Breather with Oil pick-up LW-16878
by
B & C Inverted oil pick-up VAC2-6 Assy
additionally install:
1 Lycoming washer 71596
1 Lycoming drive spline 72974
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