Lost Clutch Issue

Perhaps the main shaft clutch support circlip was crushed ( common ) and it eventually decided to shear right off ?
Enjoy .
 
The circlip is the only item in the stack up that I haven't inspected directly. If it was gone the clutch basket would be able to slide on the main shaft. Right? It only has 1-2mm of movement.

So I have a choice of taking the basket and crank sprocket off to inspect the circlip (and deal with putting it back together correctly) or accept that the circlip is ok, stop digging and get on with reassemly & readjustment.
 
L.A.B. said:
That looks like it could be the last plate in the stack next to the pressure plate which would normally be a friction plate or have you removed a friction plate or added an extra plain plate to the stack?
Click to expand...
These are the plates Lost Clutch Issue
 
Saber said:
The circlip is the only item in the stack up that I haven't inspected directly. If it was gone the clutch basket would be able to slide on the main shaft. Right? It only has 1-2mm of movement.
Click to expand...
If the circlip had failed then the nut would have been loose.


Saber said:
These are the plates
Click to expand...
Good, it was just that your previous picture seemed to show a plain plate behind the (removed) pressure plate so I thought I'd mention it. :)
 
Saber said:
The circlip is the only item in the stack up that I haven't inspected directly. If it was gone the clutch basket would be able to slide on the main shaft. Right? It only has 1-2mm of movement.

So I have a choice of taking the basket and crank sprocket off to inspect the circlip (and deal with putting it back together correctly) or accept that the circlip is ok, stop digging and get on with reassemly & readjustment.
Click to expand...
So are you able to move the whole clutch assembly along the mainshaft axis? I don't mean wobble.
if there's any axial movement at all it needs further investigation; apart from the possibility of a displaced circlip, the retaining nut on the opposite end may have worked loose.
 
B+Bogus said:
So are you able to move the whole clutch assembly along the mainshaft axis? I don't mean wobble.
if there's any axial movement at all it needs further investigation; apart from the possibility of a displaced circlip, the retaining nut on the opposite end may have worked loose.
Click to expand...
Mentioned in post three.
 
Just to clarify, the clutch basket is secure on the main shaft. I measured this morning, the end play of the main shaft is 2.0 - 2.5mm (clutch basket and main shaft move in and out together). Reading other posts, maybe its time to look at the timing side end of the main shaft to see if the nut is secured there? I still have the outer cover off.
 
Question. What lateral surfaces locate the mainshaft to the gearbox case and inner cover?
 
Saber said:
So the timing side nut sandwiches the timing side mainshaft inner bearing race to that surface?
Click to expand...

Yes.
There's no actual shaft location on the drive side but if the timing side nut did loosen then the drive side shoulder of the mainshaft would run up against the face of the sleeve gear.
 
Saber said:
I think we have the cause. I was able to tickle the timing side nut through the lever housing. Timing side nut is loose. Will go in and tighten it with locktight later today.
Click to expand...
Loctite is a good way to stop this from recurring.
 

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