Vstrom 1000 lurching forward, clutch? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 7 Old 02-25-2018, 12:32 AM Thread Starter
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Vstrom 1000 lurching forward, clutch?

My hydraulic clutch piston was leaking on my 2012 vstrom. Today I replaced the clutch piston with a brand new one. It was a straight forward installation with no issues, bled the lines with fresh dot4 and no bubbles, done.

Now I notice the bike is a lot harder to move in first gear with clutch in, this is with the bike off. When the bike is running, it is easier.

It lurches forward a good bit more when starting out shifting down to 1st gear, also the same thing if i start it in 1st gear with the clutch in. It just seems a lot harder to move than previously. Could my clutch piston I just installed be bad? Not spreading the clutch plates apart fully? or Maybe it was always like this and its one of those things you just notice because now you are specifically paying attention to it after the part swap.

I have no idea...any help is much appreciated! I might swap the old part back in tomorrow just to see if there's a difference.
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post #2 of 7 Old 02-25-2018, 01:36 AM
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Does it disengage/engage at about the same point as before? If it was not moving it far enough it would not disengage until almost fully pulled in. It is a self-adjusting clutch, so it should always move the pushrod the same distance. Multi-plate wet clutches by their nature will stick until broken apart. What you describe is exactly how all my bikes have acted (except for the DR650, which for some reason just nicks right into first with nary a lurch). Can't say why it might be different now if the clutch is moving the same amount.

-Gary
2014 V-Strom 1000 - Desert Khaki
2016 GSX-S1000FA
2012 DR650SE
2011 Burgman 400
2007 Honda Helix
2013 V-Strom 650 - sold
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post #3 of 7 Old 02-25-2018, 09:48 AM
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Sounds like you still have air trapped in the hydraulic clutch system. Bleed it some more and I think your symptoms will improve!

That said, all bikes are harder to push around in gear with the clutch pulled in than they are in neutral.
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'12 DL 650 '14 BMW R 1200 RT

WERKS modified clutch baskets for DL and SV 1000's.
The BEST in chudder control, noise control, and lasting durability! AVAILABLE HERE: www.werksparts.com

Have questions about the clutch in your DL or SV 1000? E-mail Terry [email protected]
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post #4 of 7 Old 02-25-2018, 10:14 AM
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Did you, by any chance, have the clutch lever tied to the handlebar when you were installing the slave cylinder?

It's very easy to install the slave cylinder itself, or the pushrod behind it, misaligned. This is especially the case when you install the slave cylinder with hydraulic pressure locked in, as you are pushing the pushrod against the clutch plate springs while you are bolting up everything.

Once you are ready to bolt the slave cylinder back in place, you need to make sure that the hydraulic fluid in the slave cylinder can freely flow back to the master cylinder reservoir. This means that at this stage the clutch lever should be fully released.

Also make sure that the dowel pin and spacer are in the right place, and that you did not accidentally swap the bolts.
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post #5 of 7 Old 02-25-2018, 03:49 PM Thread Starter
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Thanks for all the help! I reinspected my bolts and I believe I had them switched. The measuring off of the parts diagram graphic, the bolt with the spacer sleeve is shorter and the one without it is longer. However on the very nicely laid out sprocket thread on vstrom.info it shows that the spacer sleeve bolt should be the longer one which makes more sense. I switched it to the latter configuration along with releasing the clutch lever to press into place and align it by hand then tightening the bolts instead of tightening it into place. Upon a quick test ride she seems to be back to her old self! The engage/disengage point seems to be the same as well.
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post #6 of 7 Old 02-26-2018, 04:37 AM
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Okay, so you did put it together slightly misaligned, and have it sorted now. Well done.

One last, quick check to make. On the other side of the bike, take the oil filler cap off. Take a flashlight and look into the hole. You should see the outer rim of the clutch plates and the fingers of the clutch basket that hold them into place. Make sure all the plates, particularly the outermost one, are correctly in place. (*)

Cases like this, where people put the clutch slave cylinder into place under hydraulic pressure, it sometimes happens that the outermost plate is pushed all the way out and sits on top of the fingers of the clutch basket instead of between them.

In your case, with everything working as normal, it's most likely not the case. But it's a ten-second check, so why not?

(*) It's hard to describe in words what is correct. A picture is a lot better but I don't have any to hand. So anyway: The clutch plates have tabs at the outside. The clutch basket has "fingers" around it. Between the fingers are alternating long gaps and short gaps. All of the clutch plates, except the last (outermost) plate, sit with their tabs in the long gaps. Only the outermost plate should have its tabs in the short gap. All this is easily visible through the oil filler hole. In fact, if the outermost plate happens to have shifted and now sits on top of the clutch basket fingers, you can move it in place with a screwdriver through the oil filler hole. No need to pull the clutch cover for that.

Last edited by BackPacker; 02-26-2018 at 04:40 AM.
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post #7 of 7 Old 02-26-2018, 09:31 AM
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The clutch plates cannot shift. You can push the pressure plate out far enough that it slides its splines out of those on the inner hub. If anything moves when this happens, the splines can sit on top of each other instead of sliding back into place. If this happens, there is NO engagement of the clutch, bike simply will not move.

'12 DL 650 '14 BMW R 1200 RT

WERKS modified clutch baskets for DL and SV 1000's.
The BEST in chudder control, noise control, and lasting durability! AVAILABLE HERE: www.werksparts.com

Have questions about the clutch in your DL or SV 1000? E-mail Terry [email protected]
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