Stripped thread repair

[RiverRocket]

Anyone that has worked on saws any amount of time has surely run across stripped threads from time to time. I've been using ++ TIME-SERT Threaded inserts for stripped threads, threaded inserts, thread repair stripped sparkplug's, Ford sparkplug blowouts, threaded inserts threaded, repair stripped threads, stripped threads, inserts threaded inserts, Ford spark plug repair, for a while now and they do an awesome job,better than factory threads (JMO)
I've learned so much from this site i feel bad sometimes.....seems like i'm always learning(taking) and never giving...so i hope this info helps someone out there....
the're are cheaper thread repair kits out there that work really good...Time Serts are pretty expensive but do an excellent/permanent repair
The're are some Youtube videos showing how to use them
the're really not that expensive once you by the insert kit, then all you need to buy in the future is the inserts
For most saws as long as you have 5mm and 6mm kit you can fix just about anything on a saw
So next time you find a stripped thread on your Favorite saw Don't sweat it..here's a great way to fix it....

 

[Nardoo]

Thanks for the heads up. I use helicoils and have never had a problem. I guess I am just cheap.:msp_smile:

 

[SkippyKtm]

I use helicoils too, they work fine.
I must be a cheap summabeotch too...

 

[Big_Wood]

yep heli coils for me also. never ever had an issue. :msp_thumbup:

 

[RiverRocket]

Yeh,,,Yey,,,Helicoils work fine, just thought i would Post TIME SERTS for someone that never heard of them or wanted to try them...won't come out like Helicoils sometimes do..Yeh..Yeh.. i know you never had a helicoil fail.. Helicoil are a great fix..Time Serts are just another option.

 

[nelson727]

I have only used Time Sert and only repaired a few sets of threads. Boy was I happy with the results the Time Sert product produces, better than factory threaded hole, in my opinion.

 

[machinisttx]

In my line of work I've used several brands and styles of thread repair devices. I've not used that one though.

 

[Big_Wood]

even though i use heli coils pretty well 99% of the time there is the odd fix i have used a product similar to those. i only use them when the hole is to big for the size heli coil i wanna use. an example would be when i converted a 3120 experiment cylinder back to the stock intake bolts. my buddy drilled and tapped the cylinder for bigger intake bolts to fit a bigger carb. was a hotsaw experiment. well when i wanted that cylinder to be put to work again i realized the stock intake bolts were way to small so tried to heli coil it and realized the threaded holes in the cylinder were to big for the heli coil. so this is when i used an insert similar to what your posting. it wasn't called the same name though. i actually think the inserts i used were made by the same company that makes heli coils. it is an excellent product for the odd times just a heli coil won't work :msp_thumbup:

 

[nelson727]

Just remembered how I found out about Time Sert, there was an article explaining thread repair in the Madsen’s 2010 catalog. Step by step how to, and they have that and more on the topic on their website listed under Pro Saw Repair and Maint.-Tread Repair.

 

[olyman]

there is another way,,that i wrote about a long time ago. the reason was i had a tree roll back on a 264 olymypk..the way the casting was, that broke out,,neither heilcoils, or time serts would have worked. i took a piece of all thread rod,,which is about gr 2 hardness[soft] but harder than the mag case.i drilled it out to the drill size, for the tap, for that rod. i center drilled the rod, to about 1 inch depth,,then filled the threads with a ear swab with red loctite,put plenty on the threads of the rod, and screwed it in. let set for 24 hrs. then cut as flush to the case as i could. then took a cutting disc on a die grinder,,and ground the piece left flush to the case.not so hot,,as to loosen the loctite. then drilled the hole in the rod,,to the correct size,,for the right size thread tap for the bar stud...8 yrs later,still aint moved!!!! repaired a core drill with the threads wallered out the same way..

 

[67L36Driver]

Pioneer P-41 repair.

Purchased a Save-A-Thread spark plug insert (Helicoil) kit this morning at O'Reilleys. Only game they had. 34.45 OTD.

It had no insturctions with it. :msp_thumbdn: Yikes!

Fortunatly, plenty of UTube clips on the subject. Thirty years in mechanical engineering help some also.

I will use blue Loctite and the 'expanding mandrel' to set the insert.

Looks like the way to go in most cases.

 

[machinisttx]

there is another way,,that i wrote about a long time ago. the reason was i had a tree roll back on a 264 olymypk..the way the casting was, that broke out,,neither heilcoils, or time serts would have worked. i took a piece of all thread rod,,which is about gr 2 hardness[soft] but harder than the mag case.i drilled it out to the drill size, for the tap, for that rod. i center drilled the rod, to about 1 inch depth,,then filled the threads with a ear swab with red loctite,put plenty on the threads of the rod, and screwed it in. let set for 24 hrs. then cut as flush to the case as i could. then took a cutting disc on a die grinder,,and ground the piece left flush to the case.not so hot,,as to loosen the loctite. then drilled the hole in the rod,,to the correct size,,for the right size thread tap for the bar stud...8 yrs later,still aint moved!!!! repaired a core drill with the threads wallered out the same way..

IIRC, red loctite(the actual loctite brand) needs about 1100 or 1200 degrees F to break it down. Other brands probably vary, and I do have some red thread locking compound that is actually medium strength, equivalent to blue in the loctite brand.

 

[kspakland]

I gotta throw a wrench into the gears, so to speak ...........

I am a long time believer in helicoil and other brands of thread repairs, used em for many years.

BUT, the threads for the chain catcher on my Dolmar 120 super are stripped out, and I can't remember ever seeing a left hand thread helicoil ..........

Anybody got an idea ?

 

[machinisttx]

I just did a quick search and couldn't come up with a left hand thread helicoil or a left hand thread STI tap. Email the company and ask I guess. My only other suggestion would be a thread insert, but I don't know if any of the manufacturers make them for left handed threads.

 

[kspakland]

I did quite a web search and finally found a couple places that have metric leaf hand STI kits, but I am NOT going to spend $200 just to fix one dang hole.

 

[machinisttx]

Can't say I would either. You should be able to put in a right hand helicoil. I like the thread inserts a lot better, particularly the ez-loc brand, which uses standard size taps.

 

[67L36Driver]

I think it will be s.o.p. whenever I pull a jug to put in a spark plug insert. Most every saw that comes my way have had buggerd plug holes and/or the wrong one in it (taper seat type).

 

[67L36Driver]

I gotta throw a wrench into the gears, so to speak ...........

I am a long time believer in helicoil and other brands of thread repairs, used em for many years.

BUT, the threads for the chain catcher on my Dolmar 120 super are stripped out, and I can't remember ever seeing a left hand thread helicoil ..........

Anybody got an idea ?

Drill and tap it to a larger R.H. thread and use thread locker.

Only left hand tapped hole I've come accross so far is the clutch bolt (1/4"-28 l.h.) on a Remington GL-7.

 

[kspakland]

For information purposes, the bolt portion on the 120 super chain catcher is a left hand thread. I can see they did it that way so it won't unthread itself if the chain comes off and the thing does its job. A right hand thread won't work.