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I'm Stuck with a Stuck Set Screw!


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25 replies to this topic

#16 crittersf1 OFFLINE  

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Posted August 31, 2016 - 03:25 PM

I haven't found an easy-out, even Strap-On, that was worth anything



#17 heliosuk OFFLINE  

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Posted August 31, 2016 - 04:36 PM

Got a large battery and set of booster cables? 

Stretch the cables out so the battery is not close to where you are working.

Connect one cable to the hub.

Clamp the other cable to a metal rod of some sort that will fit into the hex hole of the screw. I'm thinking a nail/spike will work.

The idea is to get current to flow from the set screw to the hub. Rust between the two is resistance to current flow = heat right where you want it. If you get a puff of rust it worked.

 

Garry

Sounds highly dangerous to me with a very big risk of the battery exploding. I wouldn't want to try this. I have though heard that soaking in coca cola frees fixings off believe it or not.

Personally I've had remarkable success with phosphoric acid, not sure why but read it somewhere!


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#18 Bruce Dorsi OFFLINE  

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Posted August 31, 2016 - 04:41 PM

I haven't found an easy-out, even Strap-On, that was worth anything

 

:rolling:  :rolling:  :rolling:    Freudian slip?? 


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#19 ol' stonebreaker ONLINE  

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Posted August 31, 2016 - 05:01 PM

  I would use the small O/A welding tip to heat the area around the screw to almost orange. Do this w/ the pulley in a vice and once heated start working it back and forth w/ the allen wrench. If it will screw in easier than out, then do so. If it hits the other side of the bore, cut it off w/ the torch and just get a new screw. After it's cooled run a tap thru the threads.

                                        Mike


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#20 lrhredjb OFFLINE  

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Posted August 31, 2016 - 05:51 PM

I've been told this works but I have not used this method. Heat the part up and use candle wax in the hole. Keep the heat on so the wax remains melted. It's supposed to run into the rusted area and free it up. What have you got to lose?


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#21 flyboy OFFLINE  

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Posted September 01, 2016 - 06:39 AM

I knew I could depend on you all for some great ideas / suggestions!!  Now all I have to do is pick one OR - if it is really bad,  I will try them all!

 

I am really intrigued by the battery idea GWest posted. Even if it doesn't work it is always fun to blow stuff up - I hope it is not the battery -- (really LONG jumper cables)! 

 

THANK YOU ALL!!!   



#22 Alc ONLINE  

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Posted September 01, 2016 - 08:00 AM

 

I am really intrigued by the battery idea GWest posted. Even if it doesn't work it is always fun to blow stuff up - I hope it is not the battery -- (really LONG jumper cables)! 

If you had a stick welder and ever had the amps set too low and got the rod stuck I would think it would be the same .



#23 JBRamsey ONLINE  

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Posted September 01, 2016 - 07:46 PM

Sounds highly dangerous to me with a very big risk of the battery exploding. I wouldn't want to try this. I have though heard that soaking in coca cola frees fixings off believe it or not.
Personally I've had remarkable success with phosphoric acid, not sure why but read it somewhere!


Read the ingredients on your Coke can. It includes phosphoric acid.

#24 jabelman OFFLINE  

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Posted September 01, 2016 - 07:52 PM

thanks everyone I just bought another panzer 2 days ago and guess my luck when I went to get the 3 grooved Pulley off, stripped set screw because someone tried drilling it out years ago. so my only option I finished drilling it out and have it soaking in pb blaster, hopefully tomorrow it pops off with the puller.
nothing is easy, have to re thread it

Edited by jabelman, September 01, 2016 - 07:53 PM.


#25 flyboy OFFLINE  

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Posted September 02, 2016 - 06:06 AM

I agree. 

 

Once the pulley is off the shaft, the keyways can be examined for wear or distortion.

 

The setscrews can be removed or new holes drilled & tapped.

Great idea! Unfortunately the pulley is loose and slides, But won't come off the shaft.



#26 WNYTractorTinkerer ONLINE  

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Posted September 03, 2016 - 11:44 AM

Great idea! Unfortunately the pulley is loose and slides, But won't come off the shaft.

Puller time!






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