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Clutch assembly / adjustment

2557 Views 18 Replies 7 Participants Last post by  PeteW
at the end of last years riding season, i wanted to check my clutch and clutch adjustment because my clutch cable was near the end of it's adjustment. (now i realize that doesn't have anything to do with the adjustment at the clutch itself). but, anyway, i now see that i don't have enough throw in the clutch release arm. There is a lot of play there before there is any resistance.

So, my question is this... the service manual says to go one full turn out before locking down the nut. This seems like too much. Anyone have experience with this?
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Is your cable still tight? Loosen your cable adjustment all the way before making that adjustment then adjust the cable otherwise your not going to get everything tighter.
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So you have the clutch cover off?

I've gone through my clutch at least 3 times and never had adjust that lock nut.

Not sure what the problem is. :unsure:

The clutch won't disengage when the lever is pulled in?

You can adjust the cable at two points.
Is your cable still tight? Loosen your cable adjustment all the way before making that adjustment then adjust the cable otherwise your not going to get everything tighter.
I'm pretty sure it was loose when I did this, but I'm going to have to pull that cover again and verify.

So you have the clutch cover off?

I've gone through my clutch at least 3 times and never had adjust that lock nut.

Not sure what the problem is. :unsure:

The clutch won't disengage when the lever is pulled in?

You can adjust the cable at BOTH ends.
No, I put it all back together and put oil and coolant in. And then the clutch wasn't disengaging. My first time working on a clutch. Didn't think to verify operation before putting the cover back on.

This afternoon I drained the oil and checked the clutch lever / cam mechanism. Everything looks fine there. So, I'm going to have to drop the coolant and pull the clutch cover.:confused:
Did you put it together correctly? :unsure:

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I usually drain the coolant through the lower oil cooler hose. This is a PITA job. Should have a separate clutch only cover.
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Did you put it together correctly? :unsure:

View attachment 314205

I usually drain the coolant through the lower oil cooler hose. This is a PITA job. Should have a separate clutch only cover.
Agreed. Sucks not having the coolant separate. I drained both the oil and coolant into clean containers. I'm going to reuse since they're both new.

I have the service manual, and it looks to be assembled correctly. Took it all apart yesterday, and put it back together. Adjusted the clutch cable. The clutch releases some, but it's not as free as it should be.

I think i'm going to order a new clutch cable, since I'm at the end of adjustment anyway.
I have repaired several Vstrom clutch systems, and I have never seen much wear on the clutch disks or plates, even on bikes having 50k+ miles of use. But for a first-timer, there are some gotchas. First, when the clutch starts to feel tired, I have found that the problem is the clutch springs, item number 3 in the picture above. Replacing them is really easy and they are inexpensive. Second, there are some washers that get stuck to other parts by oil film, and you need to be really careful not to lose them or install them incorrectly. For example the throwout bearing is stuck to a washer on the back side of the clutch cover, item number 8. Also, if you remove all the clutch friction plates and the steel plates, pay attention to the order and the way they engage with the clutch basket. The first and last plates have a special orientation. Finally, having removed all of the clutch plates, there are two large-diameter washers, item 9 and (maybe? 10, I can't see for sure) that go in first. One washer is flat and can be inserted either way, the other washer is conical, and must be inserted with the correct orientation.

On my first venture with a Vstrom clutch, I put the conical washer in backwards, and had a non-functioning outcome. I took it apart again, and discovered my mistake, and all was well afterwards. So, making a mistake is not fatal.

If you have a bike for which you decide to replace the clutch basket with one that operates without "chudder" then you will need some special tools. I have a vise-grip-like tool that grabs the clutch basket while I remove or install the one-time-use nut on the splined shaft. Coincidentally, I was working on a Hayabusa clutch yesterday, and that nut is spec'd at 150 N-M of torque. Good luck trying to hold the clutch basket and apply a torque wrench to that nut. I use a battery powered impact driver to remove and install the nut. Be sure to un-dimple the nut before you remove it, so that it spins off without damaging the shoulders of nut -- or you will have a bad day.

hope this helps, Cap
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@LazyRs Thanks for all the info. I think I'll replace the springs, just because I'm in there. I don't want to have to open this again for a while. The clutch plates are fine. I measured them the first time I opened it.

The first and last plates have a special orientation.
This got me thinking. I recall the "thinner" plate on the outside. And I thought that's what my service manual showed. But, when I look at the parts diagram, it shows the thinner plate on the inside next to the thin spring washer. So, I'm pretty sure that's my issue. I have the thinner plate on the outside. I will have to verify what the service manual says... I probably just read it wrong.

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at the end of last years riding season, i wanted to check my clutch and clutch adjustment because my clutch cable was near the end of it's adjustment. (now i realize that doesn't have anything to do with the adjustment at the clutch itself). but, anyway, i now see that i don't have enough throw in the clutch release arm. There is a lot of play there before there is any resistance.

So, my question is this... the service manual says to go one full turn out before locking down the nut. This seems like too much. Anyone have experience with this?
Unless something is fundamentally different than my previous cable operated Stroms and Stroms of your generation adjusting the clutch is not the same as adjusting the play in the clutch cable. You can have a perfectly adjusted clutch and way too much or too little play in the cable.

If you have a lot of throw or too little throw at the clutch lever you need to adjust that by itself apart for the clutch adjustment. If you feel you have an issue with the Clutch adjust that separately.

..Tom
Unless something is fundamentally different than my previous cable operated Stroms and Stroms of your generation adjusting the clutch is not the same as adjusting the play in the clutch cable. You can have a perfectly adjusted clutch and way too much or too little play in the cable.

If you have a lot of throw or too little throw at the clutch lever you need to adjust that by itself apart for the clutch adjustment. If you feel you have an issue with the Clutch adjust that separately.

..Tom
Yes, you are correct. Unfortunately I didn't realize this until I was in too deep.
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Clutch is fixed. I figured I'd share where I went wrong, and maybe it could keep someone else from making the same mistake.

Here is the picture from the service manual. I assumed the arrows was the direction the plates go on. But, if you read down below, it's pointing to the outside. Oops!
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Well done. Now, you are a pro. (y)
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So you had the plates all backwards? :unsure:

#20 was on the outside? Didn't think it would even fit.

It takes a real man to own up to his mistakes. :cool:

Another good tip: Put in 3 Barnett clutch springs for a bit more grab on the clutch. All 6 for a LOT more grab. Clutch pull is much tougher though. I tried both. But got golfers elbow with all 6 B clutch springs in.
So you had the plates all backwards? :unsure:

#20 was on the outside? Didn't think it would even fit.

It takes a real man to own up to his mistakes. :cool:

Another good tip: Put in 3 Barnett clutch springs for a bit more grab on the clutch. All 6 for a LOT more grab. Clutch pull is much tougher though. I tried both. But got golfers elbow with all 6 B clutch springs in.
Correct, #20 was on the outside. There is no outside/inside to the plates themselves. Only the order really matters.

The result of having them out of order is that the clutch doesn't disengage all the way. it will a little.
That inside fiber disc has a larger ID to fit those metal rings inside of it. #9 and #10.

What part of Wisconsin are you from? I ride there all the time. On the west side central mostly. Excellent places to ride there. (y)
That inside fiber disc has a larger ID to fit those metal rings inside of it. #9 and #10.

What part of Wisconsin are you from? I ride there all the time. On the west side central mostly. Excellent places to ride there. (y)
Yeah, it made sense after I saw my mistake.

I'm all the way up North on Lake Superior. I've never had my bike down that way, but was thinking about heading down there later this spring. Any particular routes you recommend?
I've rode up to Madeline Island and camped up there at the Sand Bay park 5 or so years ago. Delta Diner is a nice ride too. :cool:
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I went to around 1/3 turn. The problem is the clearance will change slightly if the clutch heats up and you don't want it to slip under those conditions. I think that 1 turn is way conservative but ....

Also. If you are in there replace the springs, those get weak well before the plates wear.
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