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Bill1200
Joined: 19 Oct 2008
Posts: 111
Location: medford oregon
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 Posted: Tue Jan 13, 2009 11:00 am Post subject: Cowl removal -52 |
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New owner, have not removed the cowl yet. Nearest mechanic with YAK experience 45min away. Need to know how to remove cowl by myself, thanks.
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dsavarese0812(at)bellsout
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| Posted: Tue Jan 13, 2009 11:26 am Post subject: Cowl removal -52 |
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Attached is a photo of the lower cowling on a Yak 52 with a bungee cord pulled from one of the exhaust stack holes up to and around one of the prop blades at the root of the blade. This holds the lower cowl in place while you open the top cowl. Remove the latch pins at the rear of the cowl at the junction of where the top and bottom cowl meet. Many 52's no longer have these in place. Next, loosen the latch fasteners on each side of the cowl by turn each fastener 1/4 turn counterclockwise. Lift each side of the upper cowling so as to release the top cowl from the bottom cowl. Place a rag or rubber mat on the top of the front canopy eyebrow glass. This will prevent the top cowl from scratching the eyebrow glass. Place a small rag or something similar at the top of the nose strut behind the back edge of the lower cowl. This will prevent the lower cowl from nicking the paint on the nose strut when it is removed. Using a short step ladder, stand directly in front of the prop dome, grab the top cowl on either side by the latches and lift and push the cowl toward the canopy. Place the top cowl on the pins just behind the leather baffle end pieces at the #2 and #9 cylinders.
Now remove the bungee cord holding the lower cowl. The lower cowl should drop down at the front and be held up by a small hook on a braided wire. Go to the rear of the lower cowl. On each side at the rear you will see a latch pin. Remove the latch pin from both sides. Now go to the front of the cowl and place your right foot on the front tire and rest the lower cowl on your knee. Remove the hook from the bracket and drop the cowl down far enough to clear the exhaust stacks.
To reinstall, reverse the procedure and don't forget to use the bungee cord to hold the lower cowl in place when you bring the top cowl down to the bottom cowl. Makes it a whole lot easier.
That's it.
Dennis
[quote] ---
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Bill1200
Joined: 19 Oct 2008
Posts: 111
Location: medford oregon
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| Posted: Tue Jan 13, 2009 12:38 pm Post subject: Re: Cowl removal -52 |
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Thanks, and thanks Roger as well.
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tjyak50
Joined: 31 May 2007
Posts: 81
Location: Phoenix, AZ
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| Posted: Tue Jan 20, 2009 6:27 pm Post subject: Re: Cowl removal -52 |
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If you have enough of a man-belly you can hold the lower cowling in place with your gut while you lower the top cowling, like Bill Blackwell does.
Bill Blackwell is especially good at this:
Reach Bill Blackwell: bill(at)blackwellredstars.com.
day or night, send an email or text message..
In fact just the other day Bill Blackwell and I were discussing engine oil.
Bill said he only uses Aeroshell 25-60 because it doesn't stain his flight suit which he uses to hold his FAST card while sitting on a parachute doing spins in a .. "yak"...
Signed,
Tom Johnson
Phoenix, Arizona.
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