Tach Drive Oil Leak

faucet washer from and assortment pack worked for me. Must be 4 years now and like KazooCruiser says "no drool".

I had a b**ch of a time trying to get mine out the other day. Slightly scored the guide axially back of the o-ring toward the cable end, and a little on the bore. Had to clean it up with a little fine emery cloth and a small flap wheel in valve housing. The fit is tight, but not what it was.
Anyone ever cut a second seat for an additional o-ring, similar to a piston with the double cup seals in a brake m/c? Maybe 1/8" in from the chamfer, and it could catch anything the first missed? I know an excellent machinist who loves a challenge. Just a thought. I don't want to have to do it twice.

dkmk wrote:

... b**ch of a time trying to get mine out the other day. Slightly scored the guide axially back of the o-ring toward the cable end, and a little on the bore. Had to clean it up with a little fine emery cloth and a small flap wheel in valve housing. The fit is tight, but not what it was.
Anyone ever cut a second seat for an additional o-ring, similar to a piston with the double cup seals in a brake m/c? Maybe 1/8" in from the chamfer, and it could catch anything the first missed? I know an excellent machinist who loves a challenge. Just a thought. I don't want to have to do it twice.

Interesting question and unsurprising for a part remaining in place for maybe 30 years. In worst case scenerio, a new housing is available from Z1E for $30.

But I would consider first cleaning the opening with acetone, then a new shaft seal (inexpensive from Z1E)) with a new o-ring on the old unit and supplementing the o-ring seal with an application of Permatex hi-temp copper (comes in a squeeze tube from any auto-supply store). Believe this would assure a complete long lasting seal.

Believe your idea about the second o-ring would also work if there's enough metal thickness in the unit. Interesting question, because very dim memory recalls some of these units were originally fitted from the factorey with 2 o-rings. (Could be a just a mirage )

When I tighten down mine it bottoms out and cable is still loose. Had to add an extra gasket to snug it. BTW, I had the same nasty leak but the kit from Z1 fixed it!

I never had a seal or an O ring for mine, I just got some liguid sealant, pulled that movable screw on part up the line, then put the sealant around the flange part of line and let it dry a little thenbrought the screw on part back down and squished it onto the sealant while screwing it on and my bike seals pretty good, and I must add, I put all 4 quarts into my bike without looking back. I gave you my dollar LTD, and I try my best to keep my bike sparkling like yours..... See post pics from the past weeks

anyone have the kit link, from z1 enterprises, or tell me barney style how to fix this?

www.z1enterprises.com/catalog.aspx?pid=KZ900-A4-1976-EN0

Go to page 5 I think it is...

Post edited by: z1rick, at: 2007/04/01 18:58