Oil Pump Gasket

[mnellis]

Gyrocfi, If you get the time could you let us know how to replace the bottom oil seal

Thanks

I just replaced all the seals and O rings on my pump and it's really not a big deal except now the left side lines aren't getting oil.

The seal replacement is easy enough. You pull the small 3 screws off the top and remove the tach drive. Then you carefully take some pliers and grab the aluminum collar and twist it a little bit and pull at the same time. Here is a link to a picture that was sent to me by gyrocfi.

everything went fine and I got it back together. After starting the bike I now have no leaks but I also don't have any oil to the left side of the motor.

Do any of the oil pump experts have any ideas as to what I might have done wrong?

Now for the really bad news....and some advice.

The is a 10mm hex head bolt on top of the pump. In my case it says 3.9 but I don't know what it is. The bolt is there to hold a shaft in place. No here is the advice....IT IS A LEFT HAND THREAD!! If you try to take it out and it doesn't move don't apply more pressure. I'm not on the hunt for a left had Heli-coil type thread insert. I've found LH american threaded inserts but no luck yet with the metric sizes.

But if you've got some advice on why there is no oil to the left side, I'm all ears.

[Rustygt550]

Mike, I am in the process of rebuilding my pump Lucky I had 2 pumps & I also discovered about the left hand thread the same way as you!! Where did you get the lower seal from? I got part number 09284-10002 which is the part number of the clutch push peice & the seal is too big!

Not sure about your left side oil line problem as the design of the pump looks simple. Could it be a blockage some where?
Here is a picture of my pump in peices

[mnellis]

Mike, I am in the process of rebuilding my pump Lucky I had 2 pumps & I also discovered about the left hand thread the same way as you!! Where did you get the lower seal from? I got part number 09284-10002 which is the part number of the clutch push peice & the seal is too big!

Not sure about your left side oil line problem as the design of the pump looks simple. Could it be a blockage some where?
Here is a picture of my pump in peices

That's a great picture Rusty, thanks.

I got my lower seal when I bought one of those kits off eBay. I probably paid to much but I was tired of messing around and sourcing the seals. Originally, I got the top seal from a local bearing house and it was a very tight fit. I was going to go with the clutch seal but now you're saying it's to big. Interesting, thanks.

I've been trying to source a LH helicoil and found one but the whole kit with 10 inserts was over $450!!! Unbelievable. Not a big call for them I'd say.

Instead, I bought a pretty ugly pump off eBay that I'll take apart, clean and rebuild. In your picture I don't see the lever and shaft that the cable hooks to. If I recall, I thought that was held in place by a roll pin. Did you take that out?

[Rustygt550]

Hi Mike, yes I did not remove the pin I kept the lever & shaft in place.
I was able to get a new top seal which I am happy with the fit etc.
As far as the lower seal goes it looks like i will have to get the kit of ebay