Clutch disc and friction plates replacement bmw f800 gs

Slippage

• Slippage is a clutch problem that occurs when the pressure plate is unable to hold the friction disc against the flywheel tightly when the clutch is engaged. This causes the disc to rotate at a different speed than the flywheel. The high temperature caused by friction against the disc will eventually damage the clutch plate and necessitate a replacement. On clutches with mechanical linkage, adjustment can forestall replacement for a time.
  If you notice the engine revving abnormally as the clutch is released, and the car accelerates gradually, then it could be a slippage problem. It's possible that grease or oil on the disc is causing the slippage or the engine mount could be broken, causing the linkage to be bound up by an improperly moving engine.
  Another common cause of slippage is when the friction plate is simply worn out from use. A clutch will not last forever, and over time the clutch will begin slipping. Adjustments will not fix this problem, as a worn out friction plate will require complete replacement.
  

Vibration

• A grabbing or chattering clutch is an indicator that there is a problem inside the clutch mechanism. It is an easily noticed problem. Symptoms include a vibration or jerking as the clutch is released, especially when accelerating from a stop. This problem may be the result of a damaged or broken disc, flywheel or pressure plate. It may also be caused by loose springs or worn engine mounts, according to the Integrated Publishing website on Clutch Troubleshooting.
  

here are some resources from F800 depot:

http://f800depot.com/boxer-series-disc-lock-p-132.html?zenid=4afe38db9b2a81bb970f93f48d34a2be

http://www.webbikeworld.com/motorcycles/bmw-f-800-gs/bmw-f800gs-accessories.htm

http://www.twistedthrottle.com/trade/productlist/723/

alignment tool to align the clutch plate with the crankshaft when you are bolting the pressure plate back on. Also since you have the drive shaft off relube the splines with the correct grease.

A clutch disc should be smooth on the surface, no groove cut into it by the friction plate. If you can catch a finger nail on it, it's bad.
The friction plates usually last longer than the discs, but if the discs are bad, replace the whole set. The fiber plates are bad if they look burnt or the fiber has worn down to the disc. If you have a slipping problem, chances are good that it's worn, but check your basket for wear. The tabs get grooved where the clutch plates ride on them!

To reduce clutch disc/plate problems, avoid riding the clutch whilst driving, ie having ur foot on the clutch pedal when the engine is in operation, especially wqhen the vehicle is in motion. You see the clutch disc is sandwiched between the flywheel of the engine & the pressure plate. When the driver presses the clutch pedal, the sandwiching of the clutch plate is released, so therefore no drive is being transmitted from the engine to the road wheels. This gives an effect as if the vehicle is in neutral (engine can be revved, with no movement or propulsion of the vehicle). When the driver releases the clutch pedal, the clutch disc is now sandwiched tightly causing the drive to be transmitted to the road wheels which will now cause the vehicle to be propelled.

Clutch discs are only replaced when there are problemes with clutching in and changing gears. After constant pressing of the clutch, the asbestos material on the clutch disc after a period grinds down (clutch disc becomes thinner), which in turn will reduce friction characteristics when all the elements are sandwiched. This causes a slipping effect, preventing the drive from being transmitted to the road wheels efficiently. This causes other problems such as high fuel consumption, erratic engaging of gears, hard selecttion of gears, heavy vibration of the vehicle, stalling; just to name a few. In most cases an unusual smell of the clutch disc is observed.

Also just by resting ur foot on the clutch pedal while engine is running can be dmagaing too. You see the clutch release bearing rests on the pressure plate, so when the clutch pedal is pressed by the driver, there is a degree of friction being placed on the bearing because the pressure plate is always rotating with the engine. The clutch release bearing is stationery until the clutch pedal is pressed by the driver, which sends it into the moving pressure plate, so less pressing on the clutch pedal the less friction between the bearing and the pressure plate. Only operate/press/place foot on the clutch when necessary

If the plates look burned... you need to replace them. Have you been slipping your clutch overmuch? Or clutching up into wheelies? You'll also need to check to see if the metal discs have either warped or blued. [i]Best done by a shop.[/b]