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Author Topic: Best way to fix this leak...  (Read 1614 times)

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Offline Flowbrook1

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Best way to fix this leak...
« on: March 17, 2015, 09:34:46 PM »
My girlfriend accidentally dropped her CB750A on the left side and it aggravated a repair on the AC Generator cover that looks like it was 'puttied' (not sure what material) from the last owner. You can see from the pics that there is still some putty on the inside of the cover that I have yet to remove. It was a very small leak but noticeable enough so I decided to pull all the putty off of the outside of the cover from the previous owner's repair to see how big the gash was. I assumed the AC Generator cover was just a cover that I could pull off, but I noticed that it's not really a cover but an entire unit and not something I can easily disconnect to fix myself on a workbench or bring to someone to professionally weld. I'm wondering what's the best way to go about fixing this leak? Is it important to remove the entire cover from the bike (and possibly take out the inner parts) and have a professional welder fix the gap? If so, how do I disconnect the harness. Or, should I use something like JB Weld (long setting or quick setting) to fix it myself? Any suggestions and/or experience is appreciated. I would go about doing the job with what I think is best but I'd rather ask the forum first so I can be sure I'm doing the right thing and not making a bigger issue down the road. Thanks, Chris
« Last Edit: March 17, 2015, 09:45:28 PM by Flowbrook1 »
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Offline calj737

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Re: Best way to fix this leak...
« Reply #1 on: March 18, 2015, 07:01:41 AM »
If it wee me, I'd message Bill Benton and see if he has a used cover and replace it rather than attempt to repair it.

The hole looks to have a small indentation to it, so fully remove, and push the hole outwards. To weld it, you'll first have to purge all the oil impregnates in the aluminum, no easy feat. TIG welding it will bring all the grease up, which will make welding it very tricky. You could apply a small aluminum patch inside and weld it ariund, but it will still face the challenges mentioned above...
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Offline Mr Freeze

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Re: Best way to fix this leak...
« Reply #2 on: March 18, 2015, 08:23:17 AM »
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Offline martin_uk

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Re: Best way to fix this leak...
« Reply #3 on: March 18, 2015, 08:29:01 AM »
To remove generator  cover you have to remove gear selector cover on normal set up and alternator loom bullet connectors are behind this.
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Offline dave the welder

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Re: Best way to fix this leak...
« Reply #4 on: March 18, 2015, 06:04:35 PM »
it should be the same as any SOHC750 from 1969-1978
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Offline jonnycakes

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Re: Best way to fix this leak...
« Reply #5 on: March 18, 2015, 06:24:05 PM »
^^^^^ yes
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