Seal depth help

[roy]

85 K100 RT

Can anyone tell me the proper depth that the rear main is installed to. I would like to make the tool before I tear the bike apart.

Other seals that will be replaced are.

Alternator drive seal
Tranny input and output.

If you know the depths on these I could get a good start on tools for them also.

TIA

Roy

[deilenberger]

Roy -

I doubt if anyone can tell you this.. the reason being - the seal has changed at least 3 times I know of - and so has the seating depth.

In general - putting the seal flush with the case worked - but what you really have to do in order to determine where the seal is going to be - is measure where the lip is on the old one relative to the front face, then measure the same thing on the new one and calculate. Plus - sometimes it's a good thing to move the depth of the sealing lip just a tiny bit so it's seating on fresh metal (since the old one may have worn a bit of a tiny groove in the back of the clutch-basket hub.)

Sorry I couldn't give a definate answer, but each time I've done it - I ended up taking measurements and calculating it out.

[roy]

Don,
thanks, was hoping there was a "standard" but should have known better.

Roy

[pfls]

The original factory tool installed the main seal flush with the block, but it was later revised. The face of the tool was to be turned on a lathe and a depressed area added so that the outer rim of the seal was actually slightly higher than the block. I don't remember the exact amount, but it was around 1mm. There is a service bulletin that shows how to alter the tool.