Re: Modern transmissions??

Posted by Ross On 2009/9/4 22:26:31

Hey Gary400; Just had a relatively easy-to-check brainstorm on your tranny: Pull the pan off and remove the two big round piston housings on the valve body. Don't take the valve body off as the band struts will fall out which is a pain. Check the lip seals on the pistons. They should be soft and pliable, and they should face away from each other, when installed ie, one up, one down. Also, the seal on the shank of the piston should have its lip on the piston side of the retainer, as shown in the manual.

The point of all this is that both the low and reverse pistons are pressurised disengaged when not in use. If the seals are shot or installed wrong all your pump pressure goes whiffling past the seals and there is nothing left to engage anything. Have seen this problem before. If these are Ok, then I would place heavy bets on the front pump being shot.

My experience is that the early Ultras are a 100,000 mile transmission with moderate care. The twins are a 50,000 mile transmission (on average) though I just rode in a 55 Clipper Super with 57k that shifted perfectly in drive no less on an untouched TU.

Call me if you cant find someone nearby to build it.