Again I agree, but.....if you read the notes it says........twice the case was replaced, that is where I am confused............

Work Resolution JOB CODE 4304.......Like to know exactly what that is.....

Work Resolutions: Tech Replaced Transmission Case and Gear set per tech services............

According to the manual, you can remove the trans and not the motor. You must remove the swing arm, primary, clutch assy, inner primary, and the trans comes off the motor, you need to support the motor. This is a short version.....

Case in point, Motojockey was supposedly told, case and gears, case shipped by itself, (no record of this) so what was really done? Just like calling HD customer care...."We have not heard of this issue but here is a reference number for your dealer to call us".....not to mention every dealer in my area not hearing of this issue...........

MAN UP HD...........GIVE US A RESOLUTION AND SOME INFO........unless you don't have one which is my guess.....

Eagle Out

 

If you look at the design the only thing that is in the same area as the pushrod is the clutch slave pushing the rod to release the clutch and the mainshaft bearing, nut and snap-ring. Since the cover that goes over this area and holds the slave is the same as the Twin Cam, the bearing plate is the same as the Twin Cam and the gasket is the same as the Twin Cam what has changed to cause this in the M8 ONLY? The only new part number I could find was the bearing. My theory is that the new bearing is acting like a positive displacement pump at higher RPM's and pushing the oil from the main case cavity into the very small area of the pushrod. The oil is coming in faster than is can get out so it goes across the pushrod area into the primary.

So to test the theory I made a drain passageway out of the pushrod area to let the oil out at a faster rate than it can stock and this has greatly reduced the transfer rate but not stopped it all together. What I really want is a new bearing with a seal in place. This will still allow the oil to lube the bearing but not let it come through to the pushrod area. Trying to locate one of those now for testing. All this will do is limit the amount of oil that can get into the puhrod area.

Just a simple idea to keep the oil out of the pushrod area. There will still be a small amount of oil mist that gets in the area but I believe that should be fine as it can get out just as fast as it comes in.

 

Don't agree, many are saying they are seeing no loss of trans fluid including myself and the bike has spent it's fair share between 4 and 6000 rpm. I am keeping a very close eye on it however as it's obviously a real problem for some.

 

don't toilets flush counter clockwise Down Under? maybe your Primary is making donations to your trans! sorry, I'll go back to taking a nap now

 

ha ha best explanation I've heard yet!

 

Mine hasn't done it, but since it has happened to people here I've been keeping a close watch.

My local service manager hasn't seen a case of it yet. I doubt he's lying to me, but maybe his shop isn't big enough to have seen it yet.

 

Sorry Steve but I can't find the bearing change and P/N's. Maybe you could note it so we could see which one you suspect.

 

I work in automotive and have seen the problem solving process many times. When a problem is presented engineering will ask for some complete untouched assemblies for analysis, for example complete trans, when they identify a problem with the sub assy for example mainshaft clearance they then authorize a gearset. Finally develop a cost effective fix for the rest. no way they put a trans in every bike. I just sent in a catalyst and o2 sensor from a 2018 Audi q5 for analysis of a fault code. There is usually a lot going on behind the scenes we don't know about and they wont tell. Mike

 

Maybe someone could send this to Bert Baker or Mark at Baker Drivetrain. If anyone knows transmissions, it's these guys.

 

When I changed mine after a trip it seemed like the primary had a little extra in it.
Of course I had no measurements to judge it by and the transmission seemed close. I did not measure it at the time.
I have been checking it a lot . Just checked it again everything is as it should be. However the bike has not really been run over 3500 Rpms . It may have hit 4000 a couple brief times.