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JB Weld metal prep. question

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Paul B

07-31-1998 23:13:23

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What is best to clean a slight oil film from rough cast iron before using JB Weld? Will it hold two pieces of cast iron together under load? (a C clip retaining groove that sheared off for a pulley bearing)

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steve

09-21-1999 15:16:56

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Re: JB Weld metal prep. question in reply to Paul B , 07-31-1998 23:13:23

: What is best to clean a slight oil film from rough cast iron before using JB Weld? Will it hold two pieces of cast iron together under load? (a C clip retaining groove that sheared off for a pulley bearing) I work around this sort of thing daily. After getting into metallising I realized that the best degreaser is not petroleum based. 111 trichloroethylene is excellent if you can get it. I have a good sustitute thats not as dangerous. We call it ultra solv. As far as your question regarding the retaining ring, I would be amazed to find out the JB Weld worked. We also work with industrial grade polymers and the like. They have their place but a retaining ring groove is not one of them. Consider spraying it with a puddle torch if you have access to one. They are quite common. You can check it out on our website if you like.

U.S. Alloys/Weld Tech Company

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Wild Bill

08-01-1998 06:37:03

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Re: JB Weld metal prep. question in reply to Paul B , 07-31-1998 23:13:23

I dont think it would stand much of a load, but I'd try it anyway if I could'nt weld or braze it. I would clean it with brake cleaner.

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Milan H. Dilworth

08-07-1998 20:27:41

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Re: Re: JB Weld metal prep. question in reply to Wild Bill, 08-01-1998 06:37:03

: : What is best to clean a slight oil film from rough cast iron before using JB Weld? Will it hold two pieces of cast iron together under load? (a C clip retaining groove that sheared off for a pulley bearing)

: I dont think it would stand much of a load, but I'd try it anyway if I could'nt weld or braze it. I would clean it with brake cleaner.

Paul, I agree with Wild Bill. Do use brake cleaner for cleanup. A retaining ring groove does likely have much stress. To make the JB Weld have a better chance, rough up the places you're applying it, and then put it on in layers. Leave 24 hours between applications and rough up the surface before the next layer.

Perhaps you may want to put Loctite 635 on the hub of the pulley to the shaft to help secure it in place. It is high strength and sets up quickly, so you'll need to know how to use it.

Also don't use the JB Weld that is made to set up more quickly! It is not as strong as the origional. I have many good things to say about the product, after using it many times over many years.

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Tractor Boy

08-02-1998 22:08:52

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Re: Re: JB Weld metal prep. question in reply to Wild Bill, 08-01-1998 06:37:03

No it would break if used on a part that is stressed(i.e.bearing,PTO shaft,etc) As for cleaning parts...dunk it in a bit of gasoline and swirl it around. (yeah,you get people who tell you its too dangerous,its not a good idea,etc Anyhow,it does work,i succesfully cleaned an oil pump like that. Put it in the handy (half full) 5 gallon bucket of waste gasoline that sits OUTSIDE the side door. Turned the drive shaft a bit to flush the gear teeth out then took it apart. (I dont mind getting dirty and greasy etc,but some ladies do,no im not a girl either,I took washed it so that when I took it apart on the workbench it would not get oil all over because then if my mom saw it she would say it would creep along the floor and get on her car which is on the other side of the garage. The tractor tent is too sandy to work on the engine so we did it in the garage which is where the tractor stays anyway. And I did not find one trace of oil in that pump after washing it. Use gasoline,dont smoke,keep the gas barrel outside and put a lid on it...itll be fine. Good Luck! (Im not responsible for any injuries caused by gas buckets exploding or anything related to that.)

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John Holmes

08-03-1998 18:55:31

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Re: Re: Re: JB Weld metal prep. question in reply to Tractor Boy, 08-02-1998 22:08:52

: No it would break if used on a part that is stressed(i.e.bearing,PTO shaft,etc) As for cleaning parts...dunk it in a bit of gasoline and swirl it around. (yeah,you get people who tell you its too dangerous,its not a good idea,etc Anyhow,it does work,i succesfully cleaned an oil pump like that. Put it in the handy (half full) 5 gallon bucket of waste gasoline that sits OUTSIDE the side door. Turned the drive shaft a bit to flush the gear teeth out then took it apart. (I dont mind getting dirty and greasy etc,but some ladies do,no im not a girl either,I took washed it so that when I took it apart on the workbench it would not get oil all over because then if my mom saw it she would say it would creep along the floor and get on her car which is on the other side of the garage. The tractor tent is too sandy to work on the engine so we did it in the garage which is where the tractor stays anyway. And I did not find one trace of oil in that pump after washing it. Use gasoline,dont smoke,keep the gas barrel outside and put a lid on it...itll be fine. Good Luck! (Im not responsible for any injuries caused by gas buckets exploding or anything related to that.)

Risk of blowing up aside, if I was going to epoxy something I would use the brake clean, the good chlorinated stuff, I like J-B brand the best. I think even gas will leave a slight film, but the brake clean cuts the oil, evaporates fast and leaves NO oil film. My 2 cents worth.

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Paul B

08-04-1998 15:03:03

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Re: Re: Re: Re: JB Weld metal prep. question in reply to John Holmes, 08-03-1998 18:55:31

: : No it would break if used on a part that is stressed(i.e.bearing,PTO shaft,etc) As for cleaning parts...dunk it in a bit of gasoline and swirl it around. (yeah,you get people who tell you its too dangerous,its not a good idea,etc Anyhow,it does work,i succesfully cleaned an oil pump like that. Put it in the handy (half full) 5 gallon bucket of waste gasoline that sits OUTSIDE the side door. Turned the drive shaft a bit to flush the gear teeth out then took it apart. (I dont mind getting dirty and greasy etc,but some ladies do,no im not a girl either,I took washed it so that when I took it apart on the workbench it would not get oil all over because then if my mom saw it she would say it would creep along the floor and get on her car which is on the other side of the garage. The tractor tent is too sandy to work on the engine so we did it in the garage which is where the tractor stays anyway. And I did not find one trace of oil in that pump after washing it. Use gasoline,dont smoke,keep the gas barrel outside and put a lid on it...itll be fine. Good Luck! (Im not responsible for any injuries caused by gas buckets exploding or anything related to that.)

: Risk of blowing up aside, if I was going to epoxy something I would use the brake clean, the good chlorinated stuff, I like J-B brand the best. I think even gas will leave a slight film, but the brake clean cuts the oil, evaporates fast and leaves NO oil film. My 2 cents worth.

Thanks guys.

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Wild Bill

08-08-1998 19:19:07

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Re: Re: Re: Re: Re: JB Weld metal prep. question in reply to Paul B, 08-04-1998 15:03:03

: : : No it would break if used on a part that is stressed(i.e.bearing,PTO shaft,etc) As for cleaning parts...dunk it in a bit of gasoline and swirl it around. (yeah,you get people who tell you its too dangerous,its not a good idea,etc Anyhow,it does work,i succesfully cleaned an oil pump like that. Put it in the handy (half full) 5 gallon bucket of waste gasoline that sits OUTSIDE the side door. Turned the drive shaft a bit to flush the gear teeth out then took it apart. (I dont mind getting dirty and greasy etc,but some ladies do,no im not a girl either,I took washed it so that when I took it apart on the workbench it would not get oil all over because then if my mom saw it she would say it would creep along the floor and get on her car which is on the other side of the garage. The tractor tent is too sandy to work on the engine so we did it in the garage which is where the tractor stays anyway. And I did not find one trace of oil in that pump after washing it. Use gasoline,dont smoke,keep the gas barrel outside and put a lid on it...itll be fine. Good Luck! (Im not responsible for any injuries caused by gas buckets exploding or anything related to that.)

: : Risk of blowing up aside, if I was going to epoxy something I would use the brake clean, the good chlorinated stuff, I like J-B brand the best. I think even gas will leave a slight film, but the brake clean cuts the oil, evaporates fast and leaves NO oil film. My 2 cents worth.

: Thanks guys.

Let us know how it turns out.

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