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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Aluminum transmission case repair - rebuilding "ears"
I'd like some opinions and reality checks on fixing an aluminum tranny
case (Dodge a604) that has one of the mounting "ears" completely broken off and one partially. This is toward the back of the tranny on the far end from the bellhousing. They both have a threaded hole. Preheating the entire case to ~500F is not a problem and an AC TIG is available. Sounds like 4047 filler is what most have used in the past. I am curious about how these would work out vs "classic" TIG repair: 1. Facing both ears and then brazing on chunks of aluminum and then drilling/tapping? 2. Would getting a copper/bronze/brass bols of the correct size made up and then placing it into the partially busted ear and building up new aluminum be a good labor/time saving idea? Maybe some nickel-based anti-seize on the bolt first? 3. How about the new hts2000 filler/ repair rods at aluminumrepair.com. They claim some great stuff and google seems to have some real and positive actual usage reports. The stuff is kind of expensive though. ~ $70 for a 1lb starter pack. I'm figuring this should be more than enough with a bit left over? This sounds tempting as a "new thing" to try. What did I leave out? Classic TIG repair 1. Detergent wash the bejeezuse out of it. 2. Brake clean spray the areas being repaired. 3. Preheat to ~500F - maybe hit again with brake cleaner if stuff bubbles up (away from open flame and not inhaling fumes) 4. Hit with clean brush and start laying down beads. 5. Slowly cool down, then grind to shape, drill and tap. 6. Maybe let it sit for a couple of weeks to reharden/temper. Thanks! Jay |
#2
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Aluminum transmission case repair - rebuilding "ears"
Can you spell junk yard????
-- Clif Holland KA5IPF www.avvid.com "jj" wrote in message ... I'd like some opinions and reality checks on fixing an aluminum tranny case (Dodge a604) that has one of the mounting "ears" completely broken off and one partially. This is toward the back of the tranny on the far end from the bellhousing. They both have a threaded hole. Preheating the entire case to ~500F is not a problem and an AC TIG is available. Sounds like 4047 filler is what most have used in the past. I am curious about how these would work out vs "classic" TIG repair: 1. Facing both ears and then brazing on chunks of aluminum and then drilling/tapping? 2. Would getting a copper/bronze/brass bols of the correct size made up and then placing it into the partially busted ear and building up new aluminum be a good labor/time saving idea? Maybe some nickel-based anti-seize on the bolt first? 3. How about the new hts2000 filler/ repair rods at aluminumrepair.com. They claim some great stuff and google seems to have some real and positive actual usage reports. The stuff is kind of expensive though. ~ $70 for a 1lb starter pack. I'm figuring this should be more than enough with a bit left over? This sounds tempting as a "new thing" to try. What did I leave out? Classic TIG repair 1. Detergent wash the bejeezuse out of it. 2. Brake clean spray the areas being repaired. 3. Preheat to ~500F - maybe hit again with brake cleaner if stuff bubbles up (away from open flame and not inhaling fumes) 4. Hit with clean brush and start laying down beads. 5. Slowly cool down, then grind to shape, drill and tap. 6. Maybe let it sit for a couple of weeks to reharden/temper. Thanks! Jay |
#3
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Aluminum transmission case repair - rebuilding "ears"
it is cast aluminum.
clean it. grind the hell out of it all around to get surface aluminum where tranny fluid has soaked in. bevel the heck out of the pieces. tig weld it back together. can't help with filler materials. let it cool. rebuild tranny which takes a day or 2. |
#4
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Aluminum transmission case repair - rebuilding "ears"
well there is a less expensive and easier to do than tig welding have
you ever tried alumiweld I was designed just for this sort of thing and it is stronger than the original aluminum ,a buddy had got some to try it and he told me it was fantastic he took an old tranny casting that the mounting tab was broken off (the tranny was a junker ) and then he tried to take a hammer to make it come off ,he said he broke the old case and knocked the alumiweld but it took a nice chunk of the original material with it ,so now he uses it to fix all the little aluminum repairs around his place and on his vehicles he says it's easier and cheaper to fix an engine bracket then to hunt one down at a junk yard , I researched it a lil bit here the military had used something very similar to it years ago for they needed something to do field repairs to fix minor failures like brackets and certain components getting cracked ,or broken off and they didn't like the idea of having a vehicle being pulled back to replace a minor part or to have a welding crew to get at it ,so they looked for something they can use quickly and easily and that anybody can do and this is what they got and they need a propane torch and a stainless steel wire brush to use it if you want the addy I believe it is alumiweld.com but if thats not it you should be able to find it in a search good luck |
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