I recently pulled the drive shaft in my GL1500 Lehman trike in order to replace the pinion seal. There is now a slight vibration, which was not present before the repair, which can be felt during acceleration but not deceleration. It is also present under constant throttle at speeds above 65-70 mph. This is a very subtle vibration, almost like a "buzzing" and is felt more through the handlebars than the floorboards. It is not the same as was felt when the front u-joint in my Valkyrie trike went bad. That was much more pronounced and was felt almost completely through the pegs and only went away at constant throttle.
The front u-joint had no slop/play in it but was very easy to move. Almost no resistance. I am 99 % sure that all the "rollers" in the rear u-joint were correctly placed and undamaged. I indexed the drive shaft upon installation. I hate to start throwing parts at this, especially at the cost of a front u-joint these days. So my question is does anyone have any suggestions as to what this could be? And any tips for diagnosing would also be appreciated. TIA, Stan
Oh, BTW I did manage to destroy the front u-joint boot & did not replace it as I didn't have time to wait for a new one to ship. Don't see how that could be relevant, but you never know.