I also understood that he was talking about fairings.
Same thing for me, keep taking fairing off all the time for every single install, can;t do it any other way.
Someone had posted on here that this is a known problem with the R25 or R125. Can't remember which. They also listed a SKF replacement bearing part#. I will try to dig it up. It was on one of the trouble with shifting threads.
I did pick up two new SKF replacement bearings for the pressure plate. $43 a piece.
How much was all of the parts? I hit 4,000 miles 2 days ago and my clutch literally just gave out. Clutch lever fully released, and the clutch just doesnt bite/catch.
Not good to have happen, but it looks like it would be covered under warranty. Why is the guy taking it apart? It does look like lack of lubrication so maybe he was very low on oil?
So should we do preventive maintanance and change it now?.. Im wondering if all these bikes that have the problem are just in one country (maybe a bad batch of bearings) or is it everywhere.. And why Yamaha hasnt issued a recall..
This case happened for R25 in Malaysia and Indonesia. Even R3 Thailand also got the same case.
As for now, if it was happened in the warranty period Yamaha will replace it for free.
But it would take a lot of hassle if the bearing was broken due to the bike wouldn't engage to any gear!
So most of us replaced with SKF bearing (code : 61901-2z).
Only a bottle of coolant need to be replaced with(since coolant hose will be disconnected during the maintenance).
And not a single drop of engine oil involved ;P
Just preventative because I use mine for racing. It will be subjected to constant high RPMs. I don't know how much I would worry about it on a street bike.
EVERY mechanical device built will have faults. The major ones (such as this) will occur in a certain percentage. Even Rolls Royce has had failures. Engineers look at things like MTBF (mean time between failures) all the time. That's WHY you have regular maintenance, to address normal items that need replacing or cleaning BEFORE their ****-up time occurs.
Not only that but, like any product forum, any failures are broadcast and dissected so that it seems like every bike is broken. Let's say it's 10 bikes...heck...let's say 100 bikes have had this failure. How many has Yamaha sold worldwide in the last 2 years? Let's go low and say 10,000 (I honestly don't know) that's 1% failure rate. Pretty sure being involved in a wreck during a long distance ride is numerically more. Airlines, who strive for a ZERO failure rate, have planes that are grounded due to mechanical problems.
You have to put things in perspective. You don't know how hard he is on the bike. You don't know how hard he is on the clutch. When he says he 'takes it apart all the time' did he mean fairings? WHY is he fixing it? No warranty? Lot's of questions.
this looks like *engineering* fail. You NEVER put a ball bearing except in a radial application unless you pick a special one that can handle axial load (cage at 45deg incline). Now maybe they thought the axial component was within the bearing's design parameters but it sure seems not. Should have had a thrust bearing in there from the start.
I don't think there is any radial locating force on that bearing. When the clutch cable is slack, nothing is touching the center race. Whatever aftermarket bearing that is being talked about has to be designed to stand up lateral thrust as stated earlier. A regular radial precision bearing that just happens to have the same dimesions might fail again the same way.
There is a shaft that runs through the center of that bearing.
When you pull the clutch lever, the cable turns a shaft, that connects to another shaft. That second shaft goes through the center of the bearing. It has a lip on the inside.
That's what it looks like from the parts schematics I viewed.
I have not removed the clutch side cover from my R3, so I don't know for sure.
We need to start tracking "bearing failure mileage".
Anyone who has had this bearing fail on their bike, needs to post the mileage it failed at.
YAMAHA needs to issue a recall for this problem.
It is not an isolated case. Lots of reports coming-in from all over the place now.
Same issue on the R25 bikes. This is a known problem.
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