How To Remove A Stripped Helicoil
- #1
Okey-dokey...
Tightening up i of the screws for the handle on my Husky 394xp and I felt the threads strip. Yuck. I wasn't even pulling hard on the screw either.
Is in that location a fix for this?
Thanks.
- #2
plastic or metal?????
Okey-dokey...
Tightening upwards i of the screws for the handle on my Husky 394xp and I felt the threads strip. Yuck. I wasn't even pulling difficult on the screw either.
Is at that place a fix for this?
Cheers.
Eh???? if its plastic maybe some really good epoxy like devcon... If information technology's in metal... Timeserts are merely mode to go 
Final edited:
- #3
If it'southward in metal you MAY be able to run a tap through to clean the threads upwards, but most likely you'll have to install a heli-coil, or just drill it out to the next size bolt/machine spiral and utilize that. In plastic, if you clean it up REALLY proficient, you can put J.B Weld in the pigsty, put the screw in, and permit it harden, that's worked for me in the past, and information technology's cheaper than buying a replacement part!!
- #4
Thanks for the respond. That is exactly what I was thinking of doing, but wanted to hear it from someone before I peradventure messed upwardly anything. I volition go on it this afternoon. 
- #7
heli-coils are a joke in chainsaws... Use Timeserts....
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- #8
I've ever thought they were a joke period, just didn't know there was other options, other than welding and re threading the hole.
- #10
For damaged threads in plastic, Stihl has 2 sizes of insert that will convert the pigsty to a motorcar screw thread.
9799 543 0900 converts damaged 5mm or 6mm DG threads to 6mm motorcar thread. Drill the damaged hole out to a diameter of 0.335" or alphabetic character drill Q.
Apply some red LOCKTITE 262 or equivalent, and install with a 6 mm screw and nut. Turn the nut to install the insert, then remove the nut and commodities.
The hole in the part the bolt goes through may need to be enlarged slightly.
9795 003 0840 converts damaged 5mm DG threads to 4mm machine thread
Drill the damaged hole out to a bore of 0.213" or a #three drill.
Apply some cerise LOCKTITE 262 or equivalent, and install with a 4mm spiral and nut. Turn the nut to install the insert, so remove the nut and bolt.
A 4mm commodities and small washer may at present be used.
For example:
- #11
A tip from an experianced saw tech
From my Stihl dealer tech of 25 years comes a tip. When installing screws that are threaded into plastic or soft metal starting time turn them to the left paying close attention to when they drop into the thread, then tighten. This mode you are not cut new threads each fourth dimension. Screws started in this manner tin can be removed many times without stripping. Other wise you lot are cutting new threads each time, shortly to have nada left to thread and some other repair to do. Has worked for me for 20 years on stuff that hasn't been apart simply is of footling aid when the pigsty was messed upward by prior wrenching.
- #12
Bingo!
Gentlemen, thanks for the replies. I will need to take those office numbers to a local Stihl dealer to see if he has them. I too forgot to mention in the original mail service, this is into the plastic. And so information technology looks like those inserts are the fashion I'll go.
Thanks again.
- #16
Plastic inserts
Husky has similar inserts to the Stihl inserts except that they use the original plastic threaded screw.
503 27 33-01 6mm
503 27 39-01 5mm
AJ
- #17
helicoils are a joke in anything.
not certain near the Timeserts. Only there is a really Actually good insert. you tap out the hole, and there is a solit insert that has these locks that you lot hit into the sides of the insert that lock the inserts into position and so tin never be removed. I used these in several applications.
Ok here is a really cool tip I learned about for removing broken bolts out of aluminum. You have seen it the head of the bolt breaks and the residuum of it is either affluent or beneath the surrounding metal. You get a nut that is really close to the size of the thread. Just lay it on top of the broken bolt. At present get your mig welder and run the wire through the nut and fill in the pigsty welding the nut to the broken stud. When it cools merely put a socket and ratchet the stud out.
Similar this Tip? Hitting me with some Rep!
With Great Esteem,
Scott.
scottr
Addicted to ArboristSite
- #eighteen
helicoils are a joke in anything.
not sure about the Timeserts. But there is a actually Actually good insert. you tap out the hole, and in that location is a solit insert that has these locks that you hit into the sides of the insert that lock the inserts into position and then can never be removed. I used these in several applications.
Ok hither is a really cool tip I learned about for removing broken bolts out of aluminum. You lot accept seen information technology the head of the bolt breaks and the balance of it is either flush or beneath the surrounding metal. You get a nut that is actually close to the size of the thread. Just lay information technology on pinnacle of the cleaved bolt. Now get your mig welder and run the wire through the nut and fill in the hole welding the nut to the broken stud. When it cools just put a socket and ratchet the stud out.
Similar this Tip? Striking me with some Rep!
With Not bad Esteem,
Scott.
Scott , I remember those to be Keenserts , they're used on fixtures made of aluminum .
- #nineteen
The time-serts are a thinwall, solid (carbon or stainless), syncronized thread insert. Information technology'due south threaded in then expanded into the walls of the parent material. These were orginally designed for repairs to Helicopters, and are somewhat hard to detect. Fifty-fifty McMaster Carr doesn't stock them! Madsen's sells, and uses them, in WA.
Source: https://www.arboristsite.com/threads/how-to-fix-stripped-threads.56965/
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