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John Deere Tractors Discussion Forum
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Rim and Cast Center BOLT REMOVAL??

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Joe Hartman

11-15-2003 04:17:12




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I have a 730 we need to replace the rim ring on due to rust. We have got two of the six bolts out, other 4 nuts twisted off and bolts rusted fast in the cast ears. What in the HECK is the trick to this. We have beat on them til we are blue in the face. I know your going to say alot of heat, I am bringing it tonigh. But anyone else have any tricks? Thanks Joe




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John T

11-15-2003 07:34:28




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 Re: Rim and Cast Center BOLT REMOVAL?? in reply to Joe Hartman, 11-15-2003 04:17:12  
Good Morning Joe, Im not sure of any "Trick" in that sort of bolt removal, and you guessed it YES, im gonna suggest heat rather than the good ol fashioned "beatign" you gave them, but qualify it to some extent.

1) As much as possible, depending on how you can get heat to it, if a bolts stuck into something, I try to heat the surfaces surroundign the bolt threads, but not so much the bolt itself (especially right near its head) cuz that can make it soft and it easily twists off. Some beating/vibration once shes cooled may help break the corrosion(if possible more so on the item the bolt is threaded into) but dont hammer up the head.

2) Instead of a hard dead pull (like usong a cheater bar or long breaker bar) on the bolt, I prefer hammerign and vibration like on the end of the wrench. If you use an impact wrench and 6 point socket, that supplies vibration, but set it at lighter torque at first so you dont just twist her off.

3) I also prefer to vary the direction on turning the bolt, like loosen some but then tighten back some to work it free.

4) IT takes patience and heat around the bolt threads and then wrench end hammering/vibrating back n forth slowly milking it loose plus a few choice word at times.

Good Luck n God Bless ya Joe

John T

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Clooney

11-15-2003 05:15:29




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 Re: Rim and Cast Center BOLT REMOVAL?? in reply to Joe Hartman, 11-15-2003 04:17:12  
Joe, by beating on them all you are doing is expanding them like a rivet.. What you need to do is drill a 3/8" hole about 3/4's of the way through them from the broken end towards the head.. Then use a punch in that hole to drive them out..That not only relieves the pressure holding them in but when you drive them in that center hole with a punch, it tends to thin the bolt neck down rather than expand it..
~You might still need heat but maybe not as much.. In a lot of cases they will come out cold....

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Loren

11-15-2003 14:16:11




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 Re: Re: Rim and Cast Center BOLT REMOVAL?? in reply to Clooney , 11-15-2003 05:15:29  
Thanks, Clooney, for the tip. I have bolts stuck in the center hub castings on my 1010. In my case the nuts will come off but the bolts won't budge. I hadn't thought of drilling into them and using a punch and was wondering how I was going to keep from riveting them in place. Now I know what to do.



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Joe Hartman

11-15-2003 17:58:34




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 Re: Re: Re: Rim and Cast Center BOLT REMOVAL?? in reply to Loren, 11-15-2003 14:16:11  
Well, we got them all out!!! We used your method Clooney on one. Took some time but worked. Also had a tip to used Bee's Wax to draw up into the cavity between casting and bolt much as with copper pluming and flux. Well on the other 4 I just used alot of heat and a 2 inch solid rod and sledge. All came out moderatly easy, except for the final blow on the final bold. This is when the 1/4 lb punch went flying in the air after I hit it with the sledge and came down on my upper lip and split lip and about knocked my front tooth loose. In Pain, BUT GOT THE DARN BOLTS OUT !#$!@#. Thanks for you help. Joe

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ET

11-17-2003 09:19:11




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 Re: Re: Re: Re: Rim and Cast Center BOLT REMOVAL?? in reply to Joe Hartman, 11-15-2003 17:58:34  
Never-seize is a wonderful thing to use went you put those bolts back in. I just did the same job on a 630 a few weeks ago. I drilled them out also but worked my way up on drill size till one side of the hole touched the casting then they punched right out.



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Clooney

11-16-2003 04:07:59




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 Re: Re: Re: Re: Rim and Cast Center BOLT REMOVAL?? in reply to Joe Hartman, 11-15-2003 17:58:34  
Joe, you're lucky you didn't get hit in the eye?

~It's hard to imagine how tight those bolts can get stuck in there.

~Good thing there aren't any threads involved so all you had to do is drive the bolt shanks straight out.

~I usually just drill the holes down the center then use my air chisel with a punch on it. Once had a neighbor almost a mile away tell me that he could hear that air gun..

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John T

11-15-2003 19:57:48




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 Re: Re: Re: Re: Rim and Cast Center BOLT REMOVAL?? in reply to Joe Hartman, 11-15-2003 17:58:34  
Congratulations Joe, Yep the old heat n vibrate or grunt method eventually gets most of em out if other methods fail, so long as you dont break the bolt that is lol. Good to hear.

John T



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