Precedent crankcase seal

kantuckian · 10-25-2019, 10:36 AM

on a cc precednt crankcase seal how far in should the seal be installed in the crankcase.Would be ok if installed with the outer edge being flush with the crankcase'

Jeff McGuire · 10-28-2019, 07:57 AM

On the clutch side i believe it needs to be in past the face of the crankcase cover.

It could vary based on what engine you have though.

CP241 · 10-28-2019, 08:24 AM

I'll assume you're talking about the crank seals.

Install them in at the same point in which they were removed, if not a bit further in. As as long as they're not touching the bearing inside they'll be fine.

You just don't want to leave it outward any further than the old seal was. Inside the seal the crankshaft is nice and smooth. They can get weathered on the point of it outside of where the seal rides, and can pit slightly. This pitting can/will destroy a new seal in no time.

But as long as the crankshaft isn't pitted at all, you'll be fine. You can clean it up some with some emory cloth as well before you install the seal, but this is a lot easier when the crankshaft is out of the motor.

kantuckian · 10-29-2019, 05:10 AM

I installed it flush with the crankcase seems to be ok

10-25-2019, 10:36 AM	#1
kantuckian Gone Wild Join Date: Dec 2010 Posts: 635	Precedent crankcase seal on a cc precednt crankcase seal how far in should the seal be installed in the crankcase.Would be ok if installed with the outer edge being flush with the crankcase'
kantuckian Gone Wild Join Date: Dec 2010 Posts: 635

10-28-2019, 07:57 AM	#2
Jeff McGuire Gone Wild Join Date: Jul 2019 Location: Katy TX Posts: 162	Re: Precedent crankcase seal On the clutch side i believe it needs to be in past the face of the crankcase cover. It could vary based on what engine you have though.

10-28-2019, 08:24 AM	#3
CP241 Nincompoop village idiot Join Date: Apr 2018 Location: Michigan Posts: 9,690	Re: Precedent crankcase seal I'll assume you're talking about the crank seals. Install them in at the same point in which they were removed, if not a bit further in. As as long as they're not touching the bearing inside they'll be fine. You just don't want to leave it outward any further than the old seal was. Inside the seal the crankshaft is nice and smooth. They can get weathered on the point of it outside of where the seal rides, and can pit slightly. This pitting can/will destroy a new seal in no time. But as long as the crankshaft isn't pitted at all, you'll be fine. You can clean it up some with some emory cloth as well before you install the seal, but this is a lot easier when the crankshaft is out of the motor.

10-29-2019, 05:10 AM	#4
kantuckian Gone Wild Join Date: Dec 2010 Posts: 635	Re: Precedent crankcase seal I installed it flush with the crankcase seems to be ok
kantuckian Gone Wild Join Date: Dec 2010 Posts: 635

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