How to get threaded screws off?
- Thread starter deXtrous
- Start date
AussieSteve
Active Member
You're making a crankshaft from a pocket-bike hub? I don't follow.
I'd say the screws might have permanent, (red), Loctite or Permatex on them.
(That's a thread-locker.)
You shouldn't have ground them off, (impatient?), but at least there's a tiny bit to get hold of.
Did you try heat, when they wouldn't come undone? That's what you should try next.
You might need to buy bolt-extractors as well at this point - see how you go.
I'd say the screws might have permanent, (red), Loctite or Permatex on them.
(That's a thread-locker.)
You shouldn't have ground them off, (impatient?), but at least there's a tiny bit to get hold of.
Did you try heat, when they wouldn't come undone? That's what you should try next.
You might need to buy bolt-extractors as well at this point - see how you go.
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professor
Active Member
Heat will break Locktite down. No problem. I made a jackshaft out of a rear scooter hub like you are doing- works fine.
D
DougC
Guest
Broken screw extractors maybe?
I have no idea who sells them in Australia. They're not a typical hardware-store item, more of a professional machine-shop sort of tool, so you very well may need to order them online.
~
I have no idea who sells them in Australia. They're not a typical hardware-store item, more of a professional machine-shop sort of tool, so you very well may need to order them online.
~
Al.Fisherman
Active Member
There have been many threads dealing with this issue, in fact more then I care to think of.
1. Yes as mentioned, heat will soften the adhesive if any was used.
2. If you can heat it and take a pair (proper size) vise grips to turn the stud/bolt out..GREAT..if not
3. You can drill out as much material and use an easy out to extract the screw...I'd heat it before/while extracting. Start with a small size drill bit and work your way up.
4. If possible, when drilling a hole in the bolt/stud use a left, yes a left handed drill bit.
There is a stud extractor made to slip over the stud and remove it, but I or it looks like you have trashed that option. Top tool is used with an impact wrench, the bottom uses a 3/8" ratchet/breaker bar.
1. Yes as mentioned, heat will soften the adhesive if any was used.
2. If you can heat it and take a pair (proper size) vise grips to turn the stud/bolt out..GREAT..if not
3. You can drill out as much material and use an easy out to extract the screw...I'd heat it before/while extracting. Start with a small size drill bit and work your way up.
4. If possible, when drilling a hole in the bolt/stud use a left, yes a left handed drill bit.
There is a stud extractor made to slip over the stud and remove it, but I or it looks like you have trashed that option. Top tool is used with an impact wrench, the bottom uses a 3/8" ratchet/breaker bar.
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AussieSteve
Active Member
'Ezy-Out's or other generic bolt extractors can be got at almost any auto accessory store and most hardware stores, here in Oz. (We're good at breaking bolts.)
A good point when drilling for an 'Ezy-Out' is to drill a pilot hole, then use a left-hand drill bit for the second drilling, if you can get them. Check out eBay. Often, the broken bolt/stud will come out with the drill. (Thanks, Al.Fisherman)
Try 'SuperCheapAuto', either online or in person, else Mitre10.
Wow, great minds.....
I was just typing my reply as you typed your's, Ron.
When I thanked you for the left-hand drill tip, I was referring to when you mentioned it a few weeks ago, not to your most recent post.
I meant to add, 'jackshaft', not 'crankshaft'. Now it makes sense.
A good point when drilling for an 'Ezy-Out' is to drill a pilot hole, then use a left-hand drill bit for the second drilling, if you can get them. Check out eBay. Often, the broken bolt/stud will come out with the drill. (Thanks, Al.Fisherman)
Try 'SuperCheapAuto', either online or in person, else Mitre10.
Wow, great minds.....
I was just typing my reply as you typed your's, Ron.
When I thanked you for the left-hand drill tip, I was referring to when you mentioned it a few weeks ago, not to your most recent post.
I meant to add, 'jackshaft', not 'crankshaft'. Now it makes sense.
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Al.Fisherman
Active Member
By the way....if a easy out is to be used ...don't scrimp and buy a cheap POS of China **** (brittle material) ... buy a GOOD tool...if you snap it off in the stud, now the nightmares begin, and use pressure but not excessive force, as it can snap even the best easy out off.
Al.Fisherman
Active Member
No worries Steve.....
ummm Mate
ummm Mate
