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11-15-2019, 12:46 PM
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Join Date: Nov 2012
Location: Midland, mi
Posts: 769
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IO390 Expansion Plug Removal
I was reading another thread about removing the expansion plug before putting on the prop. It was suggested that one could just invert the plug with a piece of steel (rounded edges) and a hammer. Does one need to drill a hole in the plug first?
What is the easiest method of removal?
thanks
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Ken Stockman
Midland, MI
EAA Chapter 1093 member
RV-14a (serial number 140073)
N73XP (at least that # reserved now)
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11-15-2019, 01:40 PM
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Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 1,333
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Slowly drill a hole and insert a screwdriver, turn, pull or pry. Nothing stressful, it comes right off. Just clean any debris out before installing the prop. Also, don't use the edges for leverage for your screwdriver, you don't want it damaged.
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RV-14A #140376
N196 (Flying)
2019 Bronze Lindy
Last edited by bkervaski : 11-15-2019 at 01:43 PM.
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11-15-2019, 02:05 PM
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Join Date: Jul 2015
Location: Aiken, SC
Posts: 441
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A slide hammer worked really well. 
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MED
140236
N435MD
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11-15-2019, 02:33 PM
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Join Date: May 2008
Location: Eagles Nest, T56
Posts: 68
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I just did this. I used a ball peen hammer. I put the rounded end on the plug and smacked the s**t out of the ball peen with another BFH. The plug compressed and I removed it with a magnet. Easy-peasy! and no shavings to worry about.
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11-15-2019, 02:51 PM
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Join Date: Apr 2015
Location: Ponte Vedra, FL
Posts: 1,140
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Quote:
Originally Posted by twisted-wrench
I just did this. I used a ball peen hammer. I put the rounded end on the plug and smacked the s**t out of the ball peen with another BFH. The plug compressed and I removed it with a magnet. Easy-peasy! and no shavings to worry about.
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Does BFH mean what I think it does??? |
11-15-2019, 09:56 PM
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Join Date: Oct 2008
Location: Arlington, WA
Posts: 797
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Quote:
Originally Posted by mturnerb
Does BFH mean what I think it does???
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I keep my BFH right next to my BFW and my BFSD. There may also by a BFG somewhere nearby. 
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_______________________________
Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009)
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
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11-16-2019, 10:35 AM
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Join Date: Jan 2005
Location: Clermont, FL
Posts: 430
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Quote:
Originally Posted by DakotaHawk
I keep my BFH right next to my BFW and my BFSD. There may also by a BFG somewhere nearby. |
Exactly!! My BF collection lives together as they're all too large to occupy the usual drawers with their smaller brethren.
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Ken
RV-8 N118KB (#81125) - Sold
RV-14A N114KB (#140494)
Std. kit begun 5/18 - Stick grip wiring, wheel pants, gear leg fairings, and misc. other pre-airport finish-up tasks
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11-16-2019, 03:07 PM
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Join Date: Jun 2007
Location: new iberia la
Posts: 658
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Crank plug
Used the ball peen hammer method to remove/install for years, but the last 50 I’ve taken out have been with a slide hammer. I know it doesn’t hurt a thing, but like not having to hammer the plug to remove. Metal chips/debris not a issue. Doesn’t usually happen, but If a chip or 2 gets left in the crank bore during plug removal they are easily reached and removed.
Don Broussard A&P, IA, ATP
RV9 Rebuild in Progress
57 Pacer
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11-16-2019, 05:08 PM
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Join Date: Dec 2015
Location: Spring Hill, FL
Posts: 76
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Ball Pean Hammer Works
It's a little scary (hitting a brand new engine with a BPH) but works well and no metal chips to worry about.
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RV-14A QB building, Lycoming 390 Thunderbolt arrived July 2019, Garmin avionics, Vertical Power, EFII-32 Ignition and Fuel, hope to be flying Spring of 2020 !! Dues paid+ of course !!
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