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Clutch/Brake fluid - Printable Version

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+--- Thread: Clutch/Brake fluid (/showthread.php?tid=5015)

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RE: Clutch/Brake fluid - peterbaron - 02-18-2019

Matt,
Honda Manual 13-14, p.9-7 - troubleshooting, all, but mostly Hard to shift and also p 9-16/slave inspection,..weaken/broken spring...have you ever unbolted/3 long bolts to slave cylinder and tested its smooth operation?
I assume no external leak.


Clutch/Brake fluid - Cormanus - 02-18-2019

I’ve no idea if this is relevant, but I find the bike can be hard to get into neutral when it’s really hot from a long run. Particularly, it seems to me it can stick in first and I have to move it or at least partially let out the clutch to be able to get it there.


Clutch/Brake fluid - mattmcuomo@yahoo.com - 02-18-2019

(02-18-2019, 12:21 PM)peterbaron_imp Wrote: Matt,
Honda Manual 13-14, p.9-7 - troubleshooting, all, but mostly Hard to shift and also p 9-16/slave inspection,..weaken/broken spring...have you ever unbolted/3 long bolts to slave cylinder and tested its smooth operation?
I assume no external leak.


I inspected and cleaned the slave cylinder today. Seems to be fine. No leaks. I did find in the manual that if clutch doesn’t disengage that oil level should be checked. I’m usually up on keeping levels but maybe it’s a little low. I’m changing oil tomorrow, I’ll see how that goes. Thanks.


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(02-18-2019, 01:01 PM)Cormanus_imp Wrote: I’ve no idea if this is relevant, but I find the bike can be hard to get into neutral when it’s really hot from a long run. Particularly, it seems to me it can stick in first and I have to move it or at least partially let out the clutch to be able to get it there.


Yeah, I get that too but I had difficulty with it on a run around the neighborhood!! I’m hoping that an oil change will help. It’s been 4000 miles so it’s time anyway. Thanks


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RE: Clutch/Brake fluid - peterbaron - 02-18-2019

Practically, do not expect issue with oil level...
If you decided to change oil, drain it when warm-hot but after sitting for about 5-7 min, so heavy particles reach the bottom.
Put some oil drops - take initial, mid and final stream oil samples- on a white piece of paper, the best would be tissue paper, as this let oil soak into it, while leaving heavy particles on its top. INSPECT closely - any debris/evidence?
I think we covered clutch control system = L-side as per your precise and good feedback, tests and observation...
Just guessing and thinking of clutch itself problem, maybe normal wear ++????
You say low speed problem, this is when clutch is needed the most
Are you tough on clutch, semi slipping when: changing gears, take off, any wheelies habits ... = will cause faster wear.
Is it ongoing problem or just lately/suddenly, any related repairs prior, history if previous owner??
I assume your bike is not 2017
Keep us updated, please.
Any input from others???


Clutch/Brake fluid - mattmcuomo@yahoo.com - 02-19-2019

(02-18-2019, 11:27 PM)peterbaron_imp Wrote: Practically, do not expect issue with oil level...
If you decided to change oil, drain it when warm-hot but after sitting for about 5-7 min, so heavy particles reach the bottom.
Put some oil drops - take initial, mid and final stream oil samples- on a white piece of paper, the best would be tissue paper, as this let oil soak into it, while leaving heavy particles on its top. INSPECT closely - any debris/evidence?
I think we covered clutch control system = L-side as per your precise and good feedback, tests and observation...
Just guessing and thinking of clutch itself problem, maybe normal wear ++????
You say low speed problem, this is when clutch is needed the most
Are you tough on clutch, semi slipping when: changing gears, take off, any wheelies habits ... = will cause faster wear.
Is it ongoing problem or just lately/suddenly, any related repairs prior, history if previous owner??
I assume your bike is not 2017
Keep us updated, please.
Any input from others???


Could be normal clutch wear. I am the original owner, I do ride aggressively sometimes, not doing wheelies and such but mostly lots of slow and go in traffic and high speed on freeway. This started happening probably around 30,000 mile mark or so. I’ll change/inspect oil and see what I see. Thanks for your input.


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RE: Clutch/Brake fluid - peterbaron - 02-19-2019

As a general info : sometimes initial clutch wear symptoms are intermittent, and when ignored, these slowly get worse to a point of no clutch (extreme). If it is just friction material wear, it usually starts slipping first. Rarely when worn, shows symptoms only when hot, difficult or unable to shift , resumes to almost normal or normal when cold, tricky sometimes and annoying.
Let us know, what you found next????


RE: Clutch/Brake fluid - GoldOxide_imp - 02-19-2019

In light of PB's comments, other words might be MMC are:

Was the behaviour coming on slowly over several rides? Or was it sudden?

Based on past experience, the former would suggest clutch plate wear. The latter, or "sudden" may imply something else.

Although possibly not applicable to you, the only time I have had Honda hydraulic clutch failure was when the fluid circuit overheated. That is, the engine was extremely hot during a humid summer and while stuck in traffic. The failure came on suddenly, and disappeared once the clutch hydraulic circuit cooled down a bit (30 minutes). No worries, this was on a CB750.


RE: Clutch/Brake fluid - max - 02-19-2019

MMC just so we cover all possibilities, the clutch lever 1-5 adjustment, 1 provides a bit more travel than 5.

To adjust; pull the lever forward and rotate in the desired setting.

Also measured the travel of the clutch plates with my vernier calipers through the filler plug it is close to 1 mm.
So the slave cylinder moves ( releases ) the clutch plates 1 mm. in the clutch pack

Probably not your issue but wanted to add to the list.


RE: Clutch/Brake fluid - the Ferret - 02-19-2019

Max why would 1 provide more travel than 5. It's just a span adjuster isn't it?


RE: Clutch/Brake fluid - max - 02-19-2019

Ferret that is a good question, on closer inspection the master cyl plunger does in fact travel deeper into the housing by a bit over a millimeter when the lever is pulled up to the handlebar in my case, have a look.

Not a great amount but it's there and you're right, its not a lot of a difference and probably not the main cause, very re-assuring that he checked the slave cylinder.

Thanks for checking this.