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HelicopterBeginners Corner › Got sleeve out but not piston???
12-19-2003 03:30 PM  13 years agoPost 1
RCHELIFANATIC

rrApprentice

TEXAS

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I got the sleeve out really easy, but I still can't get the connecting rod off of the crank. Still not enough room, any secret tricks for me to use.


I would really appreciate any help.

Thanks guys

AMA 869729 Raptor 30v2

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12-19-2003 03:52 PM  13 years agoPost 2
rspiegel

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Austin,TX South Buda

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Sure

I had same problem just get a tt39 Thats what I did. I have no idea how to pull these things apart. Just get a big hammer. O ya is this in your Hawk Sport the TT 39 would drop right in. Yo'll love it

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12-19-2003 03:56 PM  13 years agoPost 3
rcheliflyer

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calif., usa

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Try moving the top end of the rod on the wrist pin over a bit and it should allow it to come off.

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12-19-2003 03:58 PM  13 years agoPost 4
capebob

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Cape Coral, FL

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Move the crank to top dead center and you will have enough room to remove the rod. Try to pull the rod straight back. Appling any side load will cause binding and make removal impossible without damaging the carnkshaft bushing.

Bob

Success is the ability to go from one failure to another with no loss of enthusiasm. Churchill

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12-19-2003 04:15 PM  13 years agoPost 5
rickc

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Creve Coeur IL. (Peoria Area)

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Also make sure your crank has not moved back, it needs to be as far forward as in can go, even if you have to temporarily put your fan back on.

Rick

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12-19-2003 04:37 PM  13 years agoPost 6
Peefor

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Norfolk UK

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......And if those ideas don't work, try a smallish allen key as a little crowbar behind the bottom end of the con rod. With the OS32 you might have to shorten the small arm of the allen key so that it will fit in the space.

Pete

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12-19-2003 05:01 PM  13 years agoPost 7
RCHELIFANATIC

rrApprentice

TEXAS

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Thanks, I bet the problem is that I didn't know it could move on the wrist pin also. I was trying at an angle, will try to get it.

Thanks again.

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12-19-2003 05:49 PM  13 years agoPost 8
HelicopterJohn

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Seffner, Florida (Just East of Tampa, Florida)

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Con Rod Removal

These guys are right on track. The only other thing I would do is to spray some lubricant up in the inside of the piston area where the con rod rotates on the piston pin and work the con rod from front to back to make sure it moves freely on the piston pin. Sometimes you will get a slight buildup of sludge in this area which will not allow the con rod to move back and forth freely on the piston pin. Also, when you have that moving freely rotate the con rod to the spot in the rotation where you get the most clearance and carefully move the con rod as far back as possible and remove it from the crank pin. Some engines require more of a gentle touch than others.

Good Luck

P.S. Don't forget to properly align the ring on the piston (some have a locating pin in the groove where the ring rides) during the reassembly process. Also, most liners have a aligning locating pin in the rear to make sure you get the exhaust port properly aligned. I also mark the back side of the con rod to make sure I re-install it correctly.

Just some things you might want to consider.

OC Bob's Gathering #2 was a Premiere Event. Pictures in my Gallery

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12-19-2003 07:09 PM  13 years agoPost 9
RCHELIFANATIC

rrApprentice

TEXAS

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yEAH it has sludge in there and it will not move freely, that is what the prob was.


Thanks.

AMA 869729 Raptor 30v2

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12-19-2003 07:42 PM  13 years agoPost 10
HelicopterJohn

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Seffner, Florida (Just East of Tampa, Florida)

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Sludge

Glad the info helped.

Good luck with your repair.

That's why I like RR. "Everyone" chips in and tries to help each other. I know that I have been given good information that has helped me.

Thanks "Mark" for a great place to share ideas and get help!!!!!!!!!!!!

OC Bob's Gathering #2 was a Premiere Event. Pictures in my Gallery

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HelicopterBeginners Corner › Got sleeve out but not piston???
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