Removing a broken bolt the easy way
Removing a broken bolt the easy way
I know I have talked about it on here in the past, but wanted to show some pics of how to do it, that might explain it better.
First a pic of the broken off bolt. This one is the trunnion plate mounting bolt on a 440 crawler.
Weld a washer to the bolt.
Then weld a nut to the washer, let cool, and remove the offending bolt.
They don't always go this slick, but it gets the lion's share of them out quickly and easily.
This process can be adapted to many different positions and types of broken off bolt, but this is the basic process.
Lavoy
First a pic of the broken off bolt. This one is the trunnion plate mounting bolt on a 440 crawler.
Weld a washer to the bolt.
Then weld a nut to the washer, let cool, and remove the offending bolt.
They don't always go this slick, but it gets the lion's share of them out quickly and easily.
This process can be adapted to many different positions and types of broken off bolt, but this is the basic process.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
- JD440ICD2006
- 350 crawler
- Posts: 1113
- Joined: Tue Aug 22, 2006 3:57 pm
- Location: South Carolina
I third this idea.
Had a 3 point utility blade that was held by a one inch bolt. My buddy slammed a large rock and broke the bolt.
It left just enough bolt "above ground" to piss you off. LOL
We took a one inch nut and literally melted it to the bolt with a Lincoln AC/DC tombstone. Used - DC @ 105 amps, 3/16" 7016 rod.
It took a pry bar on the wrench to get it out but the weld never cracked.
We replaced it with a grade 8 bolt so next time something else will likely give.
Had a 3 point utility blade that was held by a one inch bolt. My buddy slammed a large rock and broke the bolt.
It left just enough bolt "above ground" to piss you off. LOL
We took a one inch nut and literally melted it to the bolt with a Lincoln AC/DC tombstone. Used - DC @ 105 amps, 3/16" 7016 rod.
It took a pry bar on the wrench to get it out but the weld never cracked.
We replaced it with a grade 8 bolt so next time something else will likely give.
1959 JD 440ICD w/64 Power Angle Tilt Blade
1959 JD 440ICD w/63 Manual Angle Blade
1959 JD 440IC w/602 Manual Angle Blade
1959 JD 730D W SE (many options)
1950 JD M S w/M-20 Mower
1952 JD M W
1955 FORD 640 (burns the most fuel)
1959 JD 440ICD w/63 Manual Angle Blade
1959 JD 440IC w/602 Manual Angle Blade
1959 JD 730D W SE (many options)
1950 JD M S w/M-20 Mower
1952 JD M W
1955 FORD 640 (burns the most fuel)
Another thing I have been told to try in a case like this is drill a hole in the broken bolt and fill it full of weld before you weld the nut on. Supposedly the weld in the hole will shrink the bolt when it cools and allow it to come out easier.
Bryce
Bryce
No trees were hurt in the creation of this message.
But, many electrons were terribly bothered.
440IC/602, 2-440ICD/831 MM UBU-LP, 445N-LP, 445E-LP, BIG MO 400-M, 4 Star-LP M5-D, M5-LP, M602-LP, M670-LP, G900-LP, G900-D, G1000 Vista-LP Case 580CK
But, many electrons were terribly bothered.
440IC/602, 2-440ICD/831 MM UBU-LP, 445N-LP, 445E-LP, BIG MO 400-M, 4 Star-LP M5-D, M5-LP, M602-LP, M670-LP, G900-LP, G900-D, G1000 Vista-LP Case 580CK
Correct, I have used that more times than I can count. If this bolt had not come out after a couple tries, drilling the center out was the next option.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
Being a machinist/welder for 25 years I have done this more times than I have fingers and toes and it is the best method of removal if you can get to it. Broken dowel pins can be removed in a similar fashion by welding a stud to the broken dowel then use a slide hammer to pull the broken dowel out. The heat and impact from slide hammer will usually free it up enough to get it out.
Heat and vibration are far and away the the number one thing to remove stuck and rusted bolts.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
Gus , a friend of mine brought me a housing with a bearing race frozen into the bore. He had tried punching it out to no avail, he wanted me to machine it out, I decided to run a couple of stringers on the bearing surface to shrink it first to see if it would come out. Lots of smoke and fire after the first pass but after it cooled the race fell out of the housing with just a couple of taps. I called him to come and get it the same day he dropped it off.gus wrote:Works on bearings too.shinnery wrote:Another thing I have been told to try in a case like this is drill a hole in the broken bolt and fill it full of weld before you weld the nut on. Supposedly the weld in the hole will shrink the bolt when it cools and allow it to come out easier.
Bryce
Once he got the manual on the machine, so he could assemble the new parts into the housing he called me again on how to freeze the bearing race a it said in the manual. I told him to put it into his freezer and leave it overnight. He called the next day and said it worked well.
Lavoy, I usually do not use a washer when doing that.
One warning, if you have a lot of stuck bolts to do buy UNPLATED BARE nuts and washers. Cad-plating when burnt is not good to breath.
Dan.
1956 420C with GSC blade
Tools are to men as shoes are to women , you can never have too many !!
Used diesel engines are an adventure any way you look at them !!
Tools are to men as shoes are to women , you can never have too many !!
Used diesel engines are an adventure any way you look at them !!
I used not use washers, still don't all the time, but when the bolt is closer to flush, I have found you can get a little better bead on the bolt than I can when welding down through the nut, at least with a wire welder. If I was using stick, maybe not as big of a deal.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
I have a broken bolt problem. On my 450b loader the top side frame to clutch housing bolt (3/4 x 3-3/4) is broken off an inch or two inside the mounting hole. Can that bolt be drilled? Is their another way?
Thanks,
Scott
Thanks,
Scott
450`s c-dozer 6 way, b-loader.
350`s c-loader + ripper, b-loader with winch arch. B-loader with dozer pads
backhoe attachment.
1010 loader with forks for round bales
a few 610 Bobcats. many attachments
350`s c-loader + ripper, b-loader with winch arch. B-loader with dozer pads
backhoe attachment.
1010 loader with forks for round bales
a few 610 Bobcats. many attachments
A little hard to do if you have to do it horizontally, but you can reach up in there and weld your way back flush so you can weld a nut on there. The main thing you have to worry about is not letting the arc get directed towards the side of the hole at all, or you will be welding your "plug" to the side of the hole, then you have a mess.
If you can get the hole vertical, then it is much easier. Keep the gun perfectly vertical and centered, and just let it burn until you fill the hole to the top with the weld. The molten puddle will flow out to the edge of the hole, but as long as you never direct the arc to the side of the hole, you are not actually welding it.
Same story with a stick welder, maybe even a little easier to do.
Lavoy
If you can get the hole vertical, then it is much easier. Keep the gun perfectly vertical and centered, and just let it burn until you fill the hole to the top with the weld. The molten puddle will flow out to the edge of the hole, but as long as you never direct the arc to the side of the hole, you are not actually welding it.
Same story with a stick welder, maybe even a little easier to do.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
I have welded onto bolts that are broken inside the hole as Lavoy described but I put a piece of copper tube into the hole first to make sure that I don't weld to the side of the hole.
Ray
45 John Deere Lindeman ( modified )
46 FMC Bean Cutler ( flat belt drive )
(2) 48 Bolens Ridemasters ser. #R230, #R1051
37 Shaw Du-All tractor conversion
"R/T" home made tractor
1925/26 Centaur tractor conversion
45 John Deere Lindeman ( modified )
46 FMC Bean Cutler ( flat belt drive )
(2) 48 Bolens Ridemasters ser. #R230, #R1051
37 Shaw Du-All tractor conversion
"R/T" home made tractor
1925/26 Centaur tractor conversion
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