Air in clutch

[Mofla]

I rebuilt my slave drive and I'm still experiencing air in clutch and obviously loss of clutch . There's no loss of fluid, drips, from slave area, any ideas ??? Thanks much !!!
Mofla

[Patrick]

Just keep bleeding it and don't let the master go dry [ keep fluid over the port]. Squeeze,hold, open,close,release, repeat.

[flash2002]

Try to fill it from the bottom, it's eazyer for air to go up then down.

[..]

I rebuilt my slave drive and I'm still experiencing air in clutch and obviously loss of clutch . There's no loss of fluid, drips, from slave area, any ideas ??? Thanks much !!!
Mofla

Make sure the open end of the hose is in brake fluid.

[WintrSol]

A common air trap is the banjo fitting at the reservoir. If you turn the bars and maybe put a block under the stand, so that the banjo is lower than the master cylinder, you can pull it back into the MC. Very slowly, squeeze the lever, then hold for a couple seconds; let the lever snap back. Repeat a few times, and the air trapped in the banjo should be pulled out, and into the MC, where it bubbles up through the vent holes in the bottom of the reservoir.

[Mofla]

Thanks , seems like I've done all this but I'm missing something. Fill from the bottom?? Make sure hose is in brake fluid ?? After I fill , and bleed all is well u til after a short ride I wind up losing clutch . Temporarily I can , pop clutch in neutral and bleed air for temporary fix ! I sure appreciate your help peeps !!! Mofla

[gordonv]

How about a fitting still being loose, and allowing air in?

Then there is the place the handle bar, so the reserve is in the high side, then tie your lever down (zip tie). Leave for a day or 2. This should allow trapped air to rise and escape.

[Dorkman]

There are several tricks mentioned in other posts.  One that works for me is 1) After no bubbles, and with the master cylinder level and open, tie down the lever.  2) Leave overnight, with the idea that bubbles will rise.  3) Tap the banjo bolt with a plastic or rubber mallet where it connects to the master cylinder.  Bubbles may be trapped at the bend.  Do this several times.

[Ricky-D]

Thanks , seems like I've done all this but I'm missing something. Fill from the bottom?? Make sure hose is in brake fluid ?? After I fill , and bleed all is well u til after a short ride I wind up losing clutch . Temporarily I can , pop clutch in neutral and bleed air for temporary fix ! I sure appreciate your help peeps !!! Mofla

Well, if this all is accurate, I would surmise there is air getting back into the system by way of your repair work, or the master cylinder has gone kerplunk and it's not pumping properly.

***

[DK]

This is messy but usually works.

Tie the clutch level down with a zip tie and crack the banjo bolt open very slightly, but enough for fluid to weep out. Be sure to retighten banjo bolt before slave cylinder piston ceases to supply pressure. Finish by topping up reservoir and rinsing area with brakleen.

Be very careful to avoid brake fluid coming in contact with paint. It will destroy paint.

Dan

[Mofla]

Thanks for the input . After closer inspection of master I noticed maybe a leak at lever entry . Looking to change out complete master as opposed to rebuild because both lever and reservoir r in bad shape . Lookin do parts ! Thanks Mofla