R75/6 Transmission Input Seal - Difficult to Replace?

[72828]

Hi Everyone,

The clutch on my (new to me) R75/6 is on its last legs and it's probably time to get in there and freshen things up a bit. I did a spline lube last weekend and while it certainly helped, a worn clutch is a worn clutch.

I did notice a lot of oil and crud on all surfaces and I am fully prepared to renew the main seal, oil pump o-ring and transmission input shaft seal.

I have done all but the transmission seal on an R100/7 in the past and I had no problems. I have, however, never touched the seals on any Airhead tranny.

Can anyone tell me if this is difficult to replace? Is it a matter of removing the old seal and pressing in a new one? Are there special tools or considerations that I need to be aware of?

It would be great to think that things aft of the flywheel are oil-free after I get done!

Thanks for all the help!:thumb

Marley

[BubbaZanetti]

bump,

cause i'm doing this tonight



got the disassembly/reassembly part down fine, but any special tricks with the seal removal/insertion?

[Polarbear]

The seal comes out easily if you get ahold of it! You can drill a tiny hole in it and use a pick to remove it. Our simply pry on(inside) the seals rubber surface with a screwdriver, etc and it comes loose. New one in, I just use a tiny hammer and start it flush, working around the rim of the seal. Takes a little patience but works fine. You can also use a pvc pipe cut to length to go over the input shaft as a drift on the seal face:). I've used the tiny hammer approach many times without fail. Randy:thumb:usa

[sumran]

It is not difficult. Measure the outside diameter of the seal and the outside diameter of the input splines. Take your caliper and go to Home Depot and get a PVC fitting. The one that works well is a slipfit coupling on one side and a male or female adaptor on the other. It is a combination of 3/4" and 1" if I remember right. The OD of the fitting is very close to the diameter of the seal. The ID of the fitting slides comfortably over the input splines. Cost is less than a $1. Sorry, I don't have it with me or I would be more specific. You may need to remove the ridge in the middle of the fitting with a forstner bit.

Once you have the fitting, you just slide the seal in place and give it a few light hammer taps. Seal easily pops in place.