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MTRockster

R1150R Clutch Woes

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MTRockster

I recently acquired a project bike, at least that's what it feels like, and I began to have some clutch engagement issues to the point there was no clutch.  I have gone as far replacing both the slave and master cylinder, reading about all the other things that can go wrong.  After bleeding the circuit with a mityvac to an acceptable level, I seem to have the same issue.  There's a little clutch there, but not full disengagement when you squeeze.  I didn't pay much attention to the sound it made before, but there's definitely a clunky sound you can hear from the push rod when you squeeze the clutch.  Sometimes you don't hear the sound, but either way, no clutch.  Any ideas before I split the bike in half to look on the inside?  There wasn't any signs before that there was an issue, smooth shifts and whatnot.

 

2004 R1150R Rockster 38k 

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dirtrider
9 hours ago, MTRockster said:

I recently acquired a project bike, at least that's what it feels like, and I began to have some clutch engagement issues to the point there was no clutch.  I have gone as far replacing both the slave and master cylinder, reading about all the other things that can go wrong.  After bleeding the circuit with a mityvac to an acceptable level, I seem to have the same issue.  There's a little clutch there, but not full disengagement when you squeeze.  I didn't pay much attention to the sound it made before, but there's definitely a clunky sound you can hear from the push rod when you squeeze the clutch.  Sometimes you don't hear the sound, but either way, no clutch.  Any ideas before I split the bike in half to look on the inside?  There wasn't any signs before that there was an issue, smooth shifts and whatnot.

 

2004 R1150R Rockster 38k 

Morning  MTRockster

 

Are you saying no cutch (slips?), or no clutch RELEASE (won't disengage?)

 

If it is no dis-engagement when clutch lever is pulled in then you either have air in the clutch hydraulics (in the line, slave cyl, or master cyl) or all 3, or you have a problem in the clutch parts (like push rod worn into, or through, the spring, or something warped in the clutch assembly.

 

Have you tried setting the clutch hand lever  adjuster   for max lever travel to see if that makes a difference? 

 

Can you tell IF the clutch lever is moving the master cyl  piston very far when you pull the lever? 

 

How does the lever feel as you pull it? Does it feel normal, or does the resistance feel late in the stroke, or does it feel odd?

 

Otherwise you might try removing the starter, then with a strong light  look into the starter hole while you pull in the clutch lever  to see if you can see what is or isn't moving & how far it moves.  You won't see much but might see enough to tell what's going on.

 

 

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MTRockster
On 7/31/2020 at 5:42 AM, dirtrider said:

Morning  MTRockster

 

Are you saying no cutch (slips?), or no clutch RELEASE (won't disengage?)

 

If it is no dis-engagement when clutch lever is pulled in then you either have air in the clutch hydraulics (in the line, slave cyl, or master cyl) or all 3, or you have a problem in the clutch parts (like push rod worn into, or through, the spring, or something warped in the clutch assembly.

 

Have you tried setting the clutch hand lever  adjuster   for max lever travel to see if that makes a difference? 

 

Can you tell IF the clutch lever is moving the master cyl  piston very far when you pull the lever? 

 

How does the lever feel as you pull it? Does it feel normal, or does the resistance feel late in the stroke, or does it feel odd?

 

Otherwise you might try removing the starter, then with a strong light  look into the starter hole while you pull in the clutch lever  to see if you can see what is or isn't moving & how far it moves.  You won't see much but might see enough to tell what's going on.

 

 

 

Won't disengage.  The clutch lever is on it's 3 setting.  The feel begins to tighten a bit later in the pull, but the master's piston is definitely moving almost immediately on squeeze.  We just took off the starter and had a peak inside.  Some debris from the plate was present, and you can see the movement I'm currently getting.  I recorded a quick video of the internals.  Hmmm

 

 

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dirtrider

 

Quote

 Won't disengage.  The clutch lever is on it's 3 setting.  The feel begins to tighten a bit later in the pull, but the master's piston is definitely moving almost immediately on squeeze.  We just took off the starter and had a peak inside.  Some debris from the plate was present, and you can see the movement I'm currently getting.  I recorded a quick video of the internals.  Hmmm

Morning  MTRockster

 

That clutch material doesn't make it look promising.

 

Try zip tying the clutch lever to the hand grip (to hold clutch in dis-engaged position), then try turning the rear wheel    (with trans in 6th gear).

 

Look closely as the engine spins to see if you can see the (any) clutch disk damage.  

 

It sort of looks like the clutch disk facing blew up  & partially disintegrated. 

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