Oil filter housing orientation.

[Stralya]

I did a search but couldn't find anything on the orientation of the oil filter housing.

There are two small triangular flanges on the edge of the housing. The parts schematic shows these flanges pointing to the rear of the bike yet on my bike they have always pointed to the front.

Does it make any difference anyway?

The Swiftcicle now goes like a rocket but I have a leak coming from the housing area now. I've removed the housing and checked the o ring on the filter bolt and around the top of the housing and all seems in order. I have the bolt through the bottom of the housing followed on the inside by the spring, washer and filter. Both top and bottom filter seals are in place also.

I've slowly spun the whole unit onto the engine and drawn it up slowly by turning the 12mm oil filter bolt. It seems to seat perfectly yet when the bike warms up, a small leak develops.

I thought the new large O ring that I replaced the old one with might be out of spec so I re installed the old one yet the leak persists.

Any ideas?

Dan.

[luckygpass]

Oil Filter Housing Orientation

Hi,

I made the same mistake as your PO and reinstalled the housing with the flanges to the front. I had a leak. Might be a coincidence (did I spell that right?) since I'm a newbie to this model but can share my same problem. I read the Yamaha Service Manual, or a forum post and it said they go to matched notched area towards the rear. I reinstalled after checking my o-ring and no leaks.

[Stralya]

Thanks lucky,

I had the thing on the correct way in the first place then. I have it in the wrong way now. It leaked badly when it was in the right way but that was before I changed the big O ring.

I'll reverse it tomorrow and see how I go.

Thanks again,

Dan.

[79XS11F]

Tangs at the back ... Once the housing is far enough up they prevent the housing from spinning while you turn the filter housing bolt.
Rob

[fredintoon]

"Once the housing is far enough up they prevent the housing from spinning while you turn the filter housing bolt."
Hi Rob,
so that's what those things are for? I often wondered. I must admit that mine are pointing frontward but WTF, it don't leak. FWIW, the seal configuration is such that it'll work even with the cover fins pointing sideways. The only place the seal won't seal is where those orientation lugs hit the location stops to tilt the cover so the seal can't be pressed fully home.

[GNEPIG]

If your sealing surface is not dented or scratched on your cases then it is posible that someone else has droped or over tightened your filter cup and it might have a crack. Can you make the leak move to a different spot when you rotate the cup? Put another filter cup on from your spare motor, to see if it stops .
I would not discount the fact that the oil pan gasket might be leaking near that same area, or a leak from the bottom of the clutch cover might find it's way across to the filter cup, if the bike is run on the centerstand.
Hope this helps

[Ken Talbot]

Looking back through your post, I don't see anything about the small o-ring. Have you done anything to/with it?

[Stralya]

Problem solved

Yeah Ken, I checked that too, I just turned those fins to the back and the leak stopped, then I noticed oil leaking from the bottom of the airbox. Look at my What the........ post and all will be revealed,

Your very stupid mate,
Dan.

[skids]

OK, from now on, because you are from the land "down-under", you must perform all maintenance and do all of your problem solving while you are standing on your head!

It sounds as if your bike might need a good power washing to become oil free, unless you need it to fight rust.

Oil in the airbox? Could this be gasoline wicking the oil and dirt from the air filter? If not, you may want to check that crankcase window again with the bike on the centerstand (not on the sidestand).