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Recurring air in the slave cylinder on 2015 Griso

Robert Sides

Robert Sides

Just got it firing!
Joined
Feb 26, 2015
Messages
7
Location
Kernersville NC
I couldn't find a thread dealing with this, so I thought I would ask the experts on here about the need to bleed the air from my slave cylinder every 700-800 miles. It becomes difficult to find neutrals and shifts harder until I bleed it, with the air coming out in the first pump. After that, all is well! Anyone here have similar issues?
 
You should still be under warranty. Air is getting into the system from somewhere. It is either the slave itself, or the master cylinder. With air coming out on the first pump, my bet is on the slave cylinder, or the connection to the slave cylinder. Do make sure the remote bleeding nipple is closing completely as that is another source for air to enter the system. Take it to your dealer to have this rectified. An occasional bleeding when the bike is new isn't uncommon, but this is happening too much in your case.
 
When your lever begins diminishing and you go to bleed, can you tell if there has been any measurable fluid loss? As there are no parts to wear out to drop the fluid level like the brake reservoir, the clutch reservoir should level should never drop.

If there is any hint of a drop in fluid level, go find the wet spot.

If there's no drop in fluid, the next time you bleed it, try reverse bleeding. You will need a syringe special made for this from any auto parts store, or you can use an indexed fork oil syringe. Pull all the fluid out of the reservoir, fill the syringe with fresh fluid, pump the hose full, attach the hose to the farthest bleeder screw from the reservoir, open screw and push the fluid up through the system and back into the reservoir.

Make sure you got plenty of protection around the reservoir for spillage, cause it can get messy if not very cautious. It's best to use an assistant. Slow and steady is the trick, and if succesdful, you or your assistant will see a final little burp of air in the reservoir that could not be purged the other direction.

Once complete, syringe removed, pump that lever a dozen times slow and steady. One final "gravity" bleed may then be needed, a slight cracking open of all bleeders to let it burp til solid flow.
 
Thanks for the replies. I also have a speed bleeder on the far end from the reservoir that could be letting a bubble back in, I guess. Maybe I should take that out of the equation.
 
Robert Sides said:
Thanks for the replies. I also have a speed bleeder on the far end from the reservoir that could be letting a bubble back in, I guess. Maybe I should take that out of the equation.
Click to expand...

Possibilities that can be eliminated quickly are good to do.
 
I had this same issue a while ago and ended up replacing the clutch lever, which sorted it. 6000miles and no problem since.
 
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