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Post by magoconnor on Sept 15, 2019 16:28:10 GMT -5
Hello. I've accidentally made a few marks in the crankshaft when trying to remove the oil seal. After I removed the seal, I spotted the damage. I've tried gentle, to sand with some 400 grit and then some 1000 grit sandpaper. I dont know if its enough or if its unfixable, and a new crankshaft is the only way out. The oil seal has a double lip, the nicks only goes as far as the outer lip on the seal. Tell what you think.   |
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Post by magoconnor on Sept 15, 2019 23:57:44 GMT -5
anyone?
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Sept 16, 2019 2:36:55 GMT -5
As long as it only affects the outer lip (dust seal) on the oil seal I can't see that it will cause any problems. You can finish off polishing the crankshaft with some metal polish to make it even more smooth.
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Post by 90GTVert on Sept 16, 2019 10:13:49 GMT -5
It doesn't look that smooth there. Maybe some more polishing. Beyond that, just try it and see if it works. If not, then worry about another plan.
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Post by magoconnor on Sept 16, 2019 10:21:31 GMT -5
Okay, I do have some auto sol laying around will this work?
If its only the dust seal, will it have any effect on it leaking?
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Post by dexameth on Sept 16, 2019 10:31:32 GMT -5
Those do not look large enough to prevent a seal - I think you are just fine.
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Post by SMALL CC TEK on Sept 16, 2019 12:07:36 GMT -5
Just scotch brite it with fine to knock the sharp edges off .Put a new seal on first lube the inside of the seal that mates with the crank be for you install it and see how it goes. It does not look awful just a little rough !! lol
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Sept 16, 2019 13:40:42 GMT -5
Okay, I do have some auto sol laying around will this work? If its only the dust seal, will it have any effect on it leaking? Yes autosol will be perfect. Second question: No. |
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Post by magoconnor on Sept 16, 2019 16:19:34 GMT -5
Hello Thanks you guys for chipping in I really do appreciate it.
I have applied some metal polish.
I do have some grease I use to lube up the rear clutch pulley.
I believe its made by malossi, some moly-type grease.
Will this work?
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Post by magoconnor on Sept 17, 2019 0:24:52 GMT -5
Or should I use another type of grease, like lithium? or is engine oil better?
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Sept 17, 2019 4:18:54 GMT -5
Moly is for high load and low speed. Lithium would be better (than moly) but personally I would just use engine oil as the oil seal is designed for an engine oil environment. You don't have to worry about messing up the rubber - as they say.
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Post by magoconnor on Sept 17, 2019 20:22:11 GMT -5
How long do I have to wait before firing up the engine?
Im appliyng a small amount of rtv.
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Post by chehystpewpur on Sept 17, 2019 20:54:53 GMT -5
if youd like my input here id be happy to help. we used emry cloth at the shop i worked at to polish surfaces that were nicked and scarred to smooth it out before installing new seal. i used to cringe but lo and behold it almost always sealed up and was just fine. the low grit we had was around 320 and the higher one wasnt much finer maybe 400-500 tops. lube the sealing surface with just about anything on the seal oil grease white lithium grease just something so its not dry on the install and first bit of running. if its installed dry some seal will squeal like a stuck pig for a long time some never stop. after a little while the rubber is supposed to lubricate it slightly/the tiny bit of fluid any seal will let past it. so long as the nicks you have arent gouges and are smooth with no sharp lip or anything basically what the sand paper or emry cloth is for the seal will wear a line anyways over time and you should be fine. if youve ever seen that line thats cut into a sealing surface youll know what im talking about. on cars they can get pretty deep over time due to the sheer amount of miles. if it does leak past a slight seep after the first 100 miles or so then remove seal again and put a small dab of ultra grey silicone where the spot(s) that are knicked are at and smooth it out so you dont have silicone all over the place or a high spot. wipe off the excess with a damp rag but not soaked. or it will unset the silicone you put in the gouge. let it set up overnite and put new seal back in and see what she does.
another thing we did when the wear gouge was too deep from the seal or other damage was set the seal in slightly shallower or deeper than the affected area so long as it had a good stick in there and wasnt going to dislodge and sent it on its way with instructions to keep an eye on it and usually didnt see them again for that issue.
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Post by GrumpyUnk on Sept 17, 2019 22:54:42 GMT -5
You got some excellent advice from chehystpewpur. Boy, sorry, hard to type.
I agree that polishing should take care of scratches. I did not see anything significant in the pictures. I always(try) use some light grease on new seals to avoid a dry start condition which I reckon could damage the plastic/rubber first thing. If no grease, use oil.
Be sure to wipe the sealing surface clean with a rag and some oil that will grab any leftover material.
If there is a groove, you can leave the seal a tiny bit proud of being fully seated. It should make use of a 'different' area to form the seal, and last as long as the original before having problems.
tom
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