Tach seal leak won't stop

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11 Oct 2014 07:51 #650331 by SeattleKZ
Tach seal leak won't stop was created by SeattleKZ
I put in a new tach drive seal and it seems to leak even more. Is there a fix for this?
This is in regards to a 1976 KZ900

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11 Oct 2014 09:00 - 12 Oct 2014 07:30 #650349 by 650ed
Replied by 650ed on topic Tach seal leak won't stop

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11 Oct 2014 09:17 #650352 by SeattleKZ
Replied by SeattleKZ on topic Tach seal leak won't stop
Thanks

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11 Oct 2014 09:38 - 11 Oct 2014 09:42 #650354 by Patton
Replied by Patton on topic Tach seal leak won't stop
Both the shaft seal and o'ring(s) serve to prevent oil from escaping through or around the tach drive.

The tach shaft seal prevents oil from escaping around the shaft.

The o'ring around the tach drive case prevents oil from escaping past the case.
Am thinking that some models may have 2 o'rings around the tach drive case.





Even without the tach cable installed, there should be no leakage whatsoever from the tach drive. For example, after a cross-country ride without a tach cable, the exposed end of the tach drive shaft should be perfectly dry and oil-free.

Without the tach cable attached, should be able to see the end of the tach drive shaft, and watch it spinning when the engine is running.

Using an oil-tight connection between the cable and a leaking drive simply allows the escaping oil to accumulate inside the cable. And is a band-aid effort in lieu of a correct repair.

Hopefully, there 's no damage to the engine where the tach drive fits.





But sometimes JBWeld might serve as a feasible repair.




Good Fortune! :)

1973 Z1
KZ900 LTD
Last edit: 11 Oct 2014 09:42 by Patton.

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