Replacing oil pump o-ring

[01EliteSR]

As soon as my new o-ring gets in i intend to install it. But i have one question. If I pull the pump without yanking off any inlet or outlet lines off, I should be good to go without bleeding right? The reason for o-ring replacement is the huge smoke show i get after my scoot sits overnight. The longer it sits the more it smokes, but only when you rev it and just for about 1-2 minutes then it clears up. Let it sit overnight and wham, does the same the next morning. So I figure the o-ring is leaking and allowing extra oil into the crankcase. Any other suggestions if this doesn't work or what to look for while tearing down?

[mousewheels]

The o-ring between the oil pump and crankcase is used as an air/dirt seal.

Inside the oil pump housing there lies a lip type seal between the housing and oil pump drive shaft.

But Honda does not sell parts for oil pumps only complete assemblies. I don't know (yet) if the 94 and up Elite pump uses the same seal, but check out this thread, we were looking into seal replacement for a Spree type oil pump. If you measure the shaft and housing dimensions while you replace the oil seal, you will find out if the seal replacement we found will work.

That said - sooner or later I'll be tracking down the 94 and up seal, because the EliteSR just bought this yr with under 600 miles, does show signs of an oil pump leak after a couple weeks
http://www.hondaspree.net/phpBB3/viewto ... t=oil+pump

[01EliteSR]

Okay, so what do i need to take apart to get to this seal. I know you said pulling aprt the pumo is necessary. So i can't just remov from engine and find it, right? I'd hate to take apart this thing and b stuck without a scoot for a longer time then expected.

[mousewheels]

To examine the seal, just pull the oil pump & look at the bottom where the driveshaft goes in.

Might as well verify the seal is indeed leaking - put the oil pump with driveshaft and oil inlet over a container and check after overnight or more. I'd put the oil outlet line over a seperate container at the same time. That way you can determine if the pump leaks out the seal or there's an internal problem with the pump. Guys here say its the seal that goes, but the Gyro folks (myself included) have had pumps leak at the outlet. Could be a due to a design difference in the pump, but doesn't hurt to check both.

and b stuck without a scoot for a longer time then expected.

If the seal is leaking, better get it's measurement, a seal ordered and in-hand before proceeding, so your down time will be short.

In the thread link in my last msg here, there are pics of how the seal was retained in the Spree pump. The top of the oil pump housing is staked, to retain the seal. That's a part we do not yet have documented to completion. I was planning on staking the top of the housing in a couple places (something noiseguy also found in a pump he took apart). But have not yet repaired a pump that way... Maybe someone reading this thread will have a better plan.

[01EliteSR]

I was hoping the seal would have the same fancy size made into as yours did. So i wouldn't ahve to measure it. Let you guys know when i go to tearing it apart.