Inner primary

[Cberger_racing]

2 questions.
#1. What is causing and how is it happening that the inner primary cover is showing where something is rubbing it. You can see in the pics the rub marks and also posting a pic of the basket. The basket shows noo sign of damage like it had been rubbing it.. and there is noo play in the trans shaft what soo ever?

#2. When I took the basket off the trans shaft, transmission oil leaks out into my primary, should that be happening or does the basket make the seal to keep it from happening?

 

[Sven]

Gotta expand the info. See if this answers it. The flywheel housing is prone to break. The one side is rubbed, the housing is not cracked, you say both trans shaft and housing bearing pass inspection. Then the questions would be:

a. Are you the original owner?
b. Photos show no bolts tagging, only one side looks shaved on the inner pri, where say a cracked housing would have a high spot, and say the come-around just rubs that high spot?.
c. When removing outer cover, rag hiding what might have been settlement at that area, and was it clean?
d. Do we first get the ownership and metal find out of the way... or...
e. The teardown was hearing something make noise in the primary is why the chase?

Not familiar with oil separation points, so that will be for the another member to fill in the blank on that one. But if you are saying when you removed primary parts, trans oil began to transfer? I would think whatever you pulled away is still keeping the oil out of the primary. I'm thinking there was enough sit time to drain out of the primary, but when you saw more oil when exposing the shaft more... get it?

 

[Cberger_racing]

Gotta expand the info. See if this answers it. The flywheel housing is prone to break. The one side is rubbed, the housing is not cracked, you say both trans shaft and housing bearing pass inspection. Then the questions would be:

a. Are you the original owner?
b. Photos show no bolts tagging, only one side looks shaved on the inner pri, where say a cracked housing would have a high spot, and say the come-around just rubs that high spot?.
c. When removing outer cover, rag hiding what might have been settlement at that area, and was it clean?
d. Do we first get the ownership and metal find out of the way... or...
e. The teardown was hearing something make noise in the primary is why the chase?

Not familiar with oil separation points, so that will be for the another member to fill in the blank on that one. But if you are saying when you removed primary parts, trans oil began to transfer? I would think whatever you pulled away is still keeping the oil out of the primary. I'm thinking there was enough sit time to drain out of the primary, but when you saw more oil when exposing the shaft more... get it?

A) not original owner, purchased 8 months ago.
B)everything looks perfect, no cracks, no rubbed bolts
C)it was clean. Rag was there to soak up trans fluid that was leaking in after I removed the basket.

I tore it down ( winter maintenance) to check the trans shaft to see if it had the faulty shaft installed in the bike (which it does).

The bike runs great with no problems at all. When I purchased the bike 8 months ago I changed the fluids and noticed the primary oil had a grey tint to it. Replaced it with new oil and 2000 miles later its grey again.. thats another issue. Is the grey oil aluminum shavings or is it the primary and trans fluid mixing together..

I was wondering if the clutch basket exploded in the past and caused that damage and what I am looking at is from the past??
I just cant see how the basket is rubbing the inner primary Because there are noo wear marks on it at all. It looks almost brand new..

 

[SKOGDOG]

In my experience the only way the inner primary can get scored like that is a result of the bolt heads on the bearing carrier (basket) coming in contact. The only way I know of for that to happen is if the bearing carrier is fractured or the transmission input bearings are worn and allow the input shaft to move. I have never dealt with loosened or missing transmission mount bolts, but I kinda suspect they would not allow enough movement there to score the inner primary like that.
If your bike runs right, transmission shifts smoothly, and the clutch operated as expected, I bet you are correct in thinking it may be from an earlier repair. The pristine bearing carrier would also make you think the last one failed and was replaced.
If there is continuing abrasion in the primary, you’ll see tiny aluminum sparkles in the old oil. Sounds like yours does not have that. That primary oil only exists to lube the chain.
PS Removing the inner primary results in some seeping of transmission oil, so when you replace the inner primary, it’ll stop.

 

[Mr. Wright]

If the clutch basket nut was tight when you took it apart, I wouldn't worry to much about it. The reason it rubs there is because the trans shaft flexes under hard acceleration. I see this on almost all the primaries I have apart.

 

[Mikeinjersey]

Welcome from NJ,
Trans oil should not be migrating into your primary. You may have a trans main shaft bearing wearing and damaging the seal. That could also explain scarring to your inner primary. Since your not the original owner the scarring could very well be from previous work that was repaired but neglected to detect a damaged seal. I suspect you saw no shavings or you would have mentioned it. Are you positive your leaking trans fluid?
Drain the trans and pay attention to how much comes out. Check the spec for your bike and if its dramatically different that would be a good clue. Baker RSD 6spd holds 20oz. Continue to check your level after each ride while it's warm just like you would check engine oil. If your level drops then you would have to deal with the problem.

 

[Jwooky]

Is there movement in the mainshaft?

 

[Sven]

Ah, routine maintenance. Let's go back and see the guy's handle... Ah, 'racing'. I could use a guy like you in the pits. So let's chase the gray in the 2k oil dump. Link to link wise, 'wear' are we pulling the chain off the sprocket teeth? The go-around on this one is the engine sprocket being smaller and the curve wider on [the one side] of the pin, right? So we have wearing down there of; is the gray powder? We'd stick a magnet in the oil and who is clinging onto the magnet... gray matter? Then yes, there is your metal wear off both roller/tooth/pin. No magnet picking up gray matter; then it's clutch powder.... normal wear.

You found zero aluminum shavings and the broken carrier was repaired by the previous owner most likely. Shaft wise, you probably found something.

 

[Cberger_racing]

Is there movement in the mainshaft?

None, what soo ever