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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Right Crank Seal..Which direction????
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[QUOTE="Bunya, post: 1229487, member: 77196"] It was leaking because it was bad, direction had nothing to do with it. Normally, the open side of a seal is installed towards the pressure side. Due to the design of the seal, added pressure on the open side will help press the sealing lips tighter against the shaft. In your case, you're getting oil into the crankcase. In order for this to happen, the oil side must be at a higher relative pressure than the crank side. Because your seal had the open side towards the oil side, it should have been [i][b]more[/b][/i] effective in stopping the flow, not less. Keep in mind the crankcase experiences both positive and negative pressure cycles so the seals have to work against both. Suzuki for sure has adopted the practice of installing the r/s seals with the lips facing the oil. They've been doing it that way for quite a few years now and there's been no indications that they fail any sooner than seals installed the opposite way. I suspect whomever did the seals on your bike the last time installed them that way out of habit of working on newer Suzuki's. Since the fiche show the open side towards the crank, install it that way and don't worry about it. Provided the crank is in good condition, as long as the seal is installed square to the bore and not deformed during installation, it will be fine. [/QUOTE]
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Dirt Bike Discussions By Brand
Suzuki MX & Off-Road Dirt Bikes
Right Crank Seal..Which direction????
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