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HelicopterMain Discussion › OS 50 muffler bolt seized, any ideas on how to remove?
05-05-2005 06:39 PM  12 years agoPost 1
hoverboy26

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Phoenix, AZ

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Hello,

I wanted to take my muffler off to replace the leaky gasket seal. One bolt came out fine. but one is seized, and I have stripped out the allen head trying to remove it. Not enought room to put vise grips on it. Not much room, should I try to use a Dremel with a cutting bit to cut the head off? Or should I strap some small explosives to it? I would appreciate any wise ideas from you experienced folks. I used red loctite on the bolts. Thanks!!

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05-05-2005 06:42 PM  12 years agoPost 2
zagidave

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uk.(north london)

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you could try cutting a slot in head of the bolt with a dremel cut off disc
(if you can get access) and then use a flat blade screwdriver

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05-05-2005 06:49 PM  12 years agoPost 3
hoverboy26

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Phoenix, AZ

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Well, I will try that. I know I was putting some good torque on the bolt, as I broke my allen key! It was the second allen key that stripped out the head.

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05-05-2005 06:53 PM  12 years agoPost 4
angelob

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Stoughton WI

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Cut a slot in the head with a dremel, heat up the area the bolt screws into and use a flat blade screwdriver. Do yourself a favor and get a small butane torch if you dont have on - they are truly indispensable.

Angelo

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05-05-2005 07:17 PM  12 years agoPost 5
Davo

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London, UK

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Is there enough space to drill the head off? I think there would be less chance of damaging the crankcase than if using a cut-off disc, just go bit by bit until it falls off.

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05-06-2005 02:21 AM  12 years agoPost 6
3d type

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Bridgeport,CT USA

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same thing happened to me a few weeks ago, used the drill to remove the bolt head, just go easy.

how'd the ground come up like that ?

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05-06-2005 03:12 AM  12 years agoPost 7
Metalizer

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Canton, Ohio

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...
You could also try JB-Welding the allen wrench in the striped head over night and then heat up the bolt housing. Or as you said, duck tape a M-100 to it

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05-06-2005 04:08 AM  12 years agoPost 8
crowfly

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Pleasant View, TN U.S.A.

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I wanted to take my muffler off to replace the leaky gasket seal
When you finally do get it off, do not use a gasket upon re-assembley.

If God had meant for man to fly, he would have given him more money

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05-06-2005 06:17 AM  12 years agoPost 9
hoverboy26

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Phoenix, AZ

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Seixed muffler bolt
OK, I have been drilling on it for a while, and I must have burned up the drill bit. They were cheap 8 year old Craftsman bits anyway. I will go get some new ones tomorrow. If the new bits don't get ur done, then it will be time for some explosives. I'll do it A-Team style!!

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05-06-2005 11:29 AM  12 years agoPost 10
roys55

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USA

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Just to let you know you hardened the old bolt with that poor drill bit. So get the best drill bit you can find, tin coated would work well. Drill the head off the bolt, remove muffler and get the trusty vise-grips out. You know the rest.

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05-06-2005 11:34 AM  12 years agoPost 11
roys55

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USA

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Also, keep the rpm of the drill relatively slow, use a little oil, if you can find some cutting oil use it, if you can find cutting oil, any kind of oil will be better than nothing. Your biggest problem if the fact that useing a dull drill bit first hardened the surface of the bolt due to the friction. Just keep the rpm down, a little oil and a good bit.

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05-06-2005 04:16 PM  12 years agoPost 12
hoverboy26

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Phoenix, AZ

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Seized bolt
Hey everyone, thanks for the ideas. I used a little oil with a new drill bit, and the head came off. The bad news is that when I attacked the remaining piece with some vise grips, the rest of the bolt broke off flush with the muffler surface. I don't have a bit that small, so I will have to get one and drill that out. What a pain in the arse!! I don't want to ruin the threads on my nice muffler, so I will have to baby it, I guess.

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05-09-2005 06:07 PM  12 years agoPost 13
hoverboy26

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Phoenix, AZ

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Hey everyone,

I drilled the little bit of bolt out of the muffler, but now the threads are all boogered up. How can I fix it? I tried to thread the proper size bolt through the hole, but there is still bits of metal, and the bold will not go through. Should I use some KY? Or should I just talk really sweet to it??

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HelicopterMain Discussion › OS 50 muffler bolt seized, any ideas on how to remove?
05-09-2005 11:14 PM  12 years ago •• Post 14 ••
Peefor

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Norfolk UK

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If the sweet talking doesn't work, run an M3 tap through, to clean the threads up.

Pete

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05-10-2005 02:40 AM  12 years agoPost 15
Metalizer

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Canton, Ohio

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If the threads are wasted,
you can drill and tap the next size up using an American thread. If the muffler is flush on the back side, just put a locknut on it.

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05-10-2005 02:50 AM  12 years agoPost 16
Timberwright

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Canton CT. USA

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I'm relativly new to all of this but I'm suprised no one has pointed out that you should use BLUE loctite on all metal to metal connections and RED loctite nowhere on your heli. Red loctite must be heated to 500* to remove it (or you break off the bolts as you have seen).

I'm no expert, but thats my understanding.

Good Luck

Obey your heli's thurst

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05-10-2005 07:36 AM  12 years agoPost 17
Raptor_in_Swede

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Stockholm /Sweden

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Hoverboy
Use a longer bolt >37mm and double (locking) nuts on the side with the large hole. I have done that on many different mufflers and it works all the time.

Raptor 30V1/TT39H/Hatori#415/GY401_9253
Hirobo GPH GT/TT50H/Hatori #544/GY401_9254
RD8000

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HelicopterMain Discussion › OS 50 muffler bolt seized, any ideas on how to remove?
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