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Repair Mount for Brake Booster? w/pics |
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PlazinJavelin
Supporter of TheAMCForum Joined: Nov/02/2008 Location: Atlanta USA Status: Offline Points: 2703 |
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Posted: Jul/10/2016 at 12:02am |
I tore apart the brake booster mount for my Javelin to blast and paint. Unfortunately it's in worse shape than I thought. You can see from the pictures that the metal tube insert for the pivot is eaten clean through. There are also nylon inserts that go in there and they're worn out too. (Forgot to get a pic of those).
Is there anywhere that sells part to fix these? |
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PlazinJavelin
Supporter of TheAMCForum Joined: Nov/02/2008 Location: Atlanta USA Status: Offline Points: 2703 |
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Found the nylon pivot bushings and booster boot at amark. Guessing I'm going to have to fab a new pivot tube myself to replace that rotted one. Doesn't look like it was meant to come apart.
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19692 |
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It wasn't, pressed fit IIRC. There is no stress on that tube, it's really just a spacer/bushing holder, it's not going to cause any problems used as is. It's hidden, I'd leave it alone, but if it bothers you you might consider grinding it down and slipping a piece of thin wall tubing over it instead of trying to remove and replace the tube. That will probably be a cut off and drill out operation, then tack weld a new one in place.
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Frank Swygert
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Teamamc
AMC Addicted Joined: Jul/04/2007 Location: Canada Status: Offline Points: 1053 |
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I have some of these peices. Will dig through and see if I have a good one.
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PlazinJavelin
Supporter of TheAMCForum Joined: Nov/02/2008 Location: Atlanta USA Status: Offline Points: 2703 |
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Thanks, I'd appreciate it. To repair I'll have to cut the bad half off and weld on a new piece of tubing. It's pretty cooked. I could easily crush what's left with a pair of pliers and minimum effort.
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5458 |
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Before I did that I'd glass bead it, do a weld build-up with a MIG or gas torch, and dress it to shape. |
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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PlazinJavelin
Supporter of TheAMCForum Joined: Nov/02/2008 Location: Atlanta USA Status: Offline Points: 2703 |
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Thought about weld/patch as I've had success with other unusual repairs. Maybe the pic doesn't show well, but for this I'd have to recreate half the tube. Then when done the inside would be crud and need a lot of work. Sliding in a half inch bar of brass or copper might do help, but don't have any handy. New section of pipe would be easier. If there's no alternative it will be a weld up job.
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5458 |
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I guessed that the weld repair would be substantial. Personally I would use a gas torch as I have better control with one as opposed to a MIG. As to the interior I was assuming (there's that word again) that since you are using the nylon bushings that the interior finish wouldn't have to be that good. A cleanup with a die grinder may be sufficient. But I'm just throwing out suggestions; you have the part in hand and have a better idea of what is, and isn't, feasible.
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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If you can't get a replacement, media blasting, welding the holes closed, building up the tube while using a brass shaft as a form inside looks a lot simpler than removing what's remaining of the tube and replacing it. Like others said, a die grinder or correct size mill will clean up the interior. Brass round stock is available on ebay, and not that expensive. Flanged brass bushings are available from Aircraft Spruce and dirt cheap, less than $5 sometimes. They would work as an inner form. Edited by White70JavelinSST - Jul/11/2016 at 8:35am |
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70 Javelin SST, second owner, purchased 1972
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71SC360
AMC Addicted Charter Member Joined: Jun/29/2007 Location: East Tennessee Status: Offline Points: 5481 |
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Why are you wasting so much time on a $10 part? Even if you have to overpay for one, it's still so much less time and $ to just replace it. They are not that hard to find in good condition. I see them at shows in people's "junk parts" boxes. If you can wait until the weekend I will get you a replacement for $10 + shipping. Even if I have to send you the one from my own car...
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