How Do I Change My Clutch

[simmsy]

Once I have rectified my overheating issue on my Beta 270 (2005)

I am going to have a look at my clutch plates etc.

I have only owned the bike for 2 weeks and the previous owner did very little maintenance.

The clutch is very temperamental, some times it drags and some times there is a false nutural between 4th and 5th.

Has anyone got instruction with diagrams if possible of how to dis-assemble and asseble the clutch.

Thanks

[marky g]

THe false neutral thing is a gearbox problem, not a clutch.......as for the dragging, they all do it to a certain degree, try changing the gearbox oil first......... some decent 75w should do the trick.

[stork955]

Gday, see the sticky topic in this forum on Beta clutches. Good info there for you, and use ATF in the transmission. The actual job is very easy. False neutrals are a rider issue normally, make sure you fully move the lever and hold pressure on it when you shift. 4th and 5th are the least used gears in a trials 'box.

Cheers,

Stork

[dan williams]

Ah the basic disassembly is a piece of cake. Unlike most things on a trials bike.

Parts book is here

http://www.betamotor.com/system/attachment...t_05_motore.pdf

The cleaner the bike the better. You don't want to be dropping dirt into the open engine.

1. Lay bike on side. (so oil doesnt leak out when you open the case)

2. Remove shift lever. (1 bolt on base of lever)

3. Remove four bolts on clutch housing cover and lift off cover being careful not to damage gasket which is a thin o-ring that sits in groove in case.

4. Remove 6 bolts and washers that hold springs. Remove springs. Put them in a baggie so you don't lose them.

DON'T TOUCH THE CLUTCH LEVER! Duct tape it open, stuff it with cheese, hire an armed guard. Whatever it takes. If you pull the lever with the pressure plate loose best case you'll have to push everything back in place. Worst case you'll pop the slave piston out of it's cylinder, unseal the hydraulic system, push the thrust bearing out into the sand, lose the little ball bearing and leave a path of death and destruction whereever you go!

OK maybe a little dramatic but I have the tendency of grabbing levers by habit and with a hydraulic system in pieces the result is never good.

5. Remove pressure plate. This exposes the thrust bearing that pushes the pressure plate. I usually just leave this on if it looks OK.

Here's where it gets tricky

6. Remove clutch pack. Because you didn't pull off the whole side cover you can't just grab the whole pack from the sides.This is where I have a few special tools namely small bent screwdrivers and dental picks. By carefully reaching around the side of the clutch basket two tools at a time you can gently extract the fiber plates one at a time. The steel plates will come out with the fiber plates. The last one is tough.

7. Put the cover back on, taking care not to damage the O-ring. This keeps gremlins from gettting into the cases and lets you stand the bike back upright.

The more invasive procedure is to take the whole sidecover off but that means taking the kick starter off and the coolant feed for the water pump and is generally more of a pain then necessary.

[simmsy]

Ah the basic disassembly is a piece of cake. Unlike most things on a trials bike.

Parts book is here

http://www.betamotor.com/system/attachment...t_05_motore.pdf

The cleaner the bike the better. You don't want to be dropping dirt into the open engine.

1. Lay bike on side. (so oil doesnt leak out when you open the case)

2. Remove shift lever. (1 bolt on base of lever)

3. Remove four bolts on clutch housing cover and lift off cover being careful not to damage gasket which is a thin o-ring that sits in groove in case.

4. Remove 6 bolts and washers that hold springs. Remove springs. Put them in a baggie so you don't lose them.

DON'T TOUCH THE CLUTCH LEVER! Duct tape it open, stuff it with cheese, hire an armed guard. Whatever it takes. If you pull the lever with the pressure plate loose best case you'll have to push everything back in place. Worst case you'll pop the slave piston out of it's cylinder, unseal the hydraulic system, push the thrust bearing out into the sand, lose the little ball bearing and leave a path of death and destruction whereever you go!

OK maybe a little dramatic but I have the tendency of grabbing levers by habit and with a hydraulic system in pieces the result is never good.

5. Remove pressure plate. This exposes the thrust bearing that pushes the pressure plate. I usually just leave this on if it looks OK.

Here's where it gets tricky

6. Remove clutch pack. Because you didn't pull off the whole side cover you can't just grab the whole pack from the sides.This is where I have a few special tools namely small bent screwdrivers and dental picks. By carefully reaching around the side of the clutch basket two tools at a time you can gently extract the fiber plates one at a time. The steel plates will come out with the fiber plates. The last one is tough.

7. Put the cover back on, taking care not to damage the O-ring. This keeps gremlins from gettting into the cases and lets you stand the bike back upright.

The more invasive procedure is to take the whole sidecover off but that means taking the kick starter off and the coolant feed for the water pump and is generally more of a pain then necessary.

Thank you very much indeed.

[matt_urban]

http://www.trialscentral.com/forums/index....showtopic=28407

if you do the above you may never need to do it again till it wares out