Hey Voyager, do you know about how much Saddleman charges for the rebuild? still tryig to get enough posts to pm him
I do not. I had mine rebuilt by Tom Cutter before I knew Saddleman was doing rebuilds. Mine had a pinion seal leak, not a bearing failure, but I had Tom give it the full Monty. He replaced the large bearing, all seals and reshimmed and checked tooth pattern. I forget my exact cost, and this was 6-7 years ago, but I think around $600.
As an aside, Tom recommends 220 ml fill, not the 240 or so in the manuals and not to the bottom of the fill hole. I believe Tom said there was a BMW service bulletin on this. This lessens the likelihood of leakage through the vent. Mine is about 1/4" below the fill hole with 220.
Also, Tom recommends using Castrol Hypoy C (old designation, I forget what it is called now) dino oil. He is not a fan of synthetics in these bikes, either gearbox or FD. He said most failures he gets have synthetic lube.
I use synthetic in all my cars and trucks and have done so since the 70s, and this may be pure concidence, but my LT didn't have oil leakage problems until the dealer put synthetic lube in at the 18K service. It then developed both transmission and FD leaks that required FD rebuild and clutch replacement and all new rotating shaft seals in my transmission. I could not believe it when I removed the transmission. All three rotating shaft seals were leaking gear oil badly. I noticed the new BMW seals looked different than the originals (color mainly).
While I can't definitively pin the blame on the oil, I am sticking with dino oil. It is cheaper and works fine at the temps I ride in. I don't ride below zero or above 120 where synthetics really have their biggest advantages. I would use synthetic in a bike that came with it from the factory, but to the best of my knowledge all LTs shipped with dino.