Removing bronze tire carrier bushings - Defender Source
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  #1  
Old March 1st, 2009, 07:02 PM
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Dave Lucas
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Removing bronze tire carrier bushings

Hello All,

I am in the process of restoring a NAS ST swing out tire carrier and need to remove the bronze bushings.

Any tips or recommendations?

So far I have tried using a flathead screw driver and hammer to push them out from the center but have not been able to get them to budge.

Mike @ ECR posted a replacement part for the bushings so if I have to destroy them that is ok but if someone knows of a good way to remove them without destroying them that would be great

Thanks,

Dave
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  #2  
Old March 2nd, 2009, 02:27 AM
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Andrew Najarian
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I've never done it, or really examined a ST carrier, but I would think you would be best off using a socket, or a couple of sockets and either a BFH or a vice.
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Old March 2nd, 2009, 09:31 AM
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Quote:
Originally Posted by Stmpede
I've never done it, or really examined a ST carrier, but I would think you would be best off using a socket, or a couple of sockets and either a BFH or a vice.
Not possible, they need to be pushed out fron the inside. Here is what the bushing looks like and there is one installed from each side with a 1/8 gap in the center to allow grease to enter.
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Old March 2nd, 2009, 10:19 AM
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sounds like a good job for a slide hammer with an internal bearing/bushing puller

Quote:
Originally Posted by dave_lucas
Not possible, they need to be pushed out fron the inside. Here is what the bushing looks like and there is one installed from each side with a 1/8 gap in the center to allow grease to enter.
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Old March 2nd, 2009, 11:07 AM
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Slide hammer will destroy them correct?
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  #6  
Old March 2nd, 2009, 11:21 AM
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Will they not survive the powder coating process? Could you just clean the bearing surface after they were coated?

If you heat the surrounding metal, will they come out more easily? I don't know the comparative expansion rates of steel and bronze.
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Old March 2nd, 2009, 12:03 PM
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it shouldn't. I use the slide hammer to pull bronze/oilite pilot bushings and occasionally it does cause a burr at the contact point. but that is only a tiny percentage of the bushing surface area and could be filed away with no loss in functionality. a good slide hammer will have small jaws that expand outward grab the back edge of the bushing. I think some even have an expanding collet which will grab even more, so more surface area= less chance for damage. but my slide hammer puller only has two jasw and is really only good for bushings of a certain depth and size. more comprehensive sets are available.

Quote:
Originally Posted by dave_lucas
Slide hammer will destroy them correct?
Follow-up Post:

good thinking jim, maybe the bushes could be filled with plugs or silicone during the application portion of the powdercoating process. I don't think the bake is all that high of a temperature but it seems the plugs could be pulled before the bake.

or just rattle can the damn thing

Quote:
Originally Posted by JimC
Will they not survive the powder coating process? Could you just clean the bearing surface after they were coated?

If you heat the surrounding metal, will they come out more easily? I don't know the comparative expansion rates of steel and bronze.
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  #8  
Old March 2nd, 2009, 12:16 PM
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Powder coating is at 400 degrees F and plugs are used to keep powder out. Works great on tire carrier
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  #9  
Old March 2nd, 2009, 12:57 PM
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The tire carrier is in pretty rough shape (by colorado standards) and I am going to have it blasted or acid dipped to remove the rust, my concearn was that the blasting or dip would damage the bushings.

Additionaly there is a fair amount of grease trapped in the bronze and behind it and do not want it to run out and comprimise the integrity of the powdercoating.

Probabley a bit anal and over the top but I want it to be better than new when I am done.
New bushings have been ordered from Mcmaster-carr. I will head down and buy a slide hammer… amazingly enough this is one tool I do not have

I am taking pictures as I go and will post details in the projects area when done.
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  #10  
Old March 2nd, 2009, 06:07 PM
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Dave,
Definitely pull the bushings...the grease will liquify and ruin the powdercoating. Try heating the tire carrier with a torch and see if a little heat loosens things up. Otherwise, take a 15mm deep socket, as it is just smaller than the minor OD of the bushing, and use it as a punch with an air hammer to drive out the bushings. You will break the ears off of one of them but they will come right out. AB has a nice kit with new bushings and nice allen head pivot bolts for like $60
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  #11  
Old March 2nd, 2009, 06:20 PM
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It sucks I paid double for these but I guess live and learn
http://www.roverparts.com/Parts/8987.cfm
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