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Author Topic: Mechanical Question  (Read 1291 times)

Offline Triple Bob

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Mechanical Question
« on: June 26, 2021, 03:29:21 pm »
I need to replace the damaged crank case cover on my son's bike, and I have the new part, and the gasket. But there are remnants of the old gasket still on the engine, it is a very thin residue (not sealant), like you can't really feel it at all. Do I need to remove it completely before installing the new one?



If so, how do I remove it without damaging the surface? Or should I just ignore it.
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Offline Gurgie

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Re: Mechanical Question
« Reply #1 on: June 26, 2021, 03:34:19 pm »
^try some brake cleaner, that usually gets that old residue off. I'd stuff a rag in the openings & spray some on, or spray it on a rag & wipe it off, that way you don't worry about it getting in anywhere it shouldn't be. Another option is a razor blade to scrape it off.

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Online blur911

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Re: Mechanical Question
« Reply #2 on: June 26, 2021, 05:10:21 pm »
Roloc bristle disks are good for cleaning stuff up, get the lightest grit for aluminum and be careful.

Razor blades work great, but can gouge aluminum if you get too enthusiastic, be careful with those too. 
« Last Edit: June 26, 2021, 05:15:25 pm by blur911 »
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Offline rrocket

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Re: Mechanical Question
« Reply #3 on: June 26, 2021, 05:14:53 pm »
I second razor blade and solvent.
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Offline bridgecity

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Re: Mechanical Question
« Reply #4 on: June 26, 2021, 05:28:42 pm »
Can’t argue with what’s said above, however that’s gonna seal up fine with a new gasket.
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Offline EV Dan

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Re: Mechanical Question
« Reply #5 on: June 26, 2021, 05:46:24 pm »
I guess Googone would dissolve it.
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Offline rrocket

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Re: Mechanical Question
« Reply #6 on: June 26, 2021, 06:25:56 pm »


Quote from: blur911 on June 26, 2021, 05:10:21 pm


Razor blades work great, but can gouge aluminum if you get too enthusiastic, be careful with those too.

Excellent, excellent point!

I have some scrapers that are made of very hard plastic and can be sharpened to a fine edge. They work as a razor blade does but won't mar the surface.

They even sell plastic razor "blades" now.
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Offline Triple Bob

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Re: Mechanical Question
« Reply #7 on: June 26, 2021, 06:26:21 pm »
Tried my best, new gasket on, will fill it up with oil later.

Fingers crossed.
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Offline rrocket

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Re: Mechanical Question
« Reply #8 on: June 26, 2021, 06:26:36 pm »
Quote from: bridgecity on June 26, 2021, 05:28:42 pm
Can’t argue with what’s said above, however that’s gonna seal up fine with a new gasket.
Especially so with a small bead of sealant.
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Online blur911

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Re: Mechanical Question
« Reply #9 on: June 26, 2021, 06:58:07 pm »
Quote from: rrocket on June 26, 2021, 06:26:36 pm
Quote from: bridgecity on June 26, 2021, 05:28:42 pm
Can’t argue with what’s said above, however that’s gonna seal up fine with a new gasket.
Especially so with a small bead of sealant.

I've been using Loctite 574
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Offline rrocket

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Re: Mechanical Question
« Reply #10 on: June 26, 2021, 07:17:09 pm »
Quote from: Triple Bob on June 26, 2021, 06:26:21 pm
Tried my best, new gasket on, will fill it up with oil later.

Fingers crossed.
I have a feeling it will be fine...
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Offline ktm525

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Re: Mechanical Question
« Reply #11 on: July 04, 2021, 10:04:15 am »
That will be no problem. Won't leak worse than a new KTM.  ;D

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Offline Triple Bob

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Re: Mechanical Question
« Reply #12 on: July 05, 2021, 10:26:30 am »
LOL, everything seems to be holding up well so far.
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