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Help 2013 V7 stone Brake Bleed that won't bleed.

Howardhughes

Howardhughes

Just got it firing!
GT Contributor
Joined
Oct 1, 2023
Messages
19
Location
Charlotte
Help, Non ABS 2013 v7 stone went to flush old dark brake fluid, used a hand vacuum pump on the rear bleed valve now I cant bleed the air out...the Res never went dry, even tried cracking the banjo bolt on the master cylinder and gravity drained then did the caliper banjo bolt to no avail. HELP.
 
I would help you if I could understand what you tried to write.

Please clarify.

What do you mean by “Never had the res go dry”?

Are you saying that your reservoir was completely empty before you started to change the fluid?

You don’t bleed out via a banjo bolt either. You just are not making sense. Sorry.

Too many ambiguities.
 
Sometimes you have to take off muffler, remove caliper & put bleeder up above the master in a strait line to the top on a table or box off to side of bike, have even had to take wheels off to get a strait line upward slant. I put a wrench in between pads so they stay put.
 
try pumping the lever several times to build up pressure then while hold it down open the bleed valve. Try that several times. Sometimes you may have to raise the caliper above the master cylinder as air will rise.
 
the system never went dry. Res = reservoir, we use that abbreviation in the 30 years as a aircraft engineer, guess it was too vague.
 
Howardhughes said:
the system never went dry. Res = reservoir, we use that abbreviation in the 30 years as a aircraft engineer, guess it was too vague.
Click to expand...

I completely understand “res” and its meaning. I have wrenched professionally on motorcycles for more than 40 years. I just retired recently.

Your original statements were incomplete and confusing.

By cracking open the banjo bolt, you have put air all the way down at the pump/piston itself now.

My recommendation is to:

1. Remove the caliper from the wheel.

2. Use string or a bungee and raise it as high as you possibly can ABOVE the height of the piston and fluid reservoir. Make height your friend as the air will rise to the highest point in the brake fluid line.

3. Place something solid, like a wedge or wrench, between the brake pads to prevent them crushing together.

4. Follow my instructions on the post I gave you the hyperlink to regarding 2 person bleeding.

One of you generate pressure by repeatedly pumping the piston then holding solid pressure while the other slowly cracks open the bleeding nipple with the long tube on it (sitting underneath a layer of clean brake fluid), and the piston/pedal slides smoothly and slowly. Close the bleeding nipple before the end of the pedal/piston stroke. Rebuild pressure and repeat again and again until all air has exited the clear tubing and only fluid is coming through.

Raising the caliper earlier will make air your friend as the air in the line will want to rise inside the fluid as you bleed out the line.

Do not let the reservoir run out of clean brake fluid while doing this.

Good luck!
 
I can’t explain the physics behind it, but this method has always worked for me to get the air out of non-ABS motorcycle brake systems.

Rig up a weight or other mechanism to keep the brake pedal fully depressed and leave it that way for 10 hours or so. After the wait period remove whatever you rigged up to depress the brake pedal and pump the brake several times. It should now feel firm and be void of all air.

Jason
 
scottmastrocinque said:
You are welcome. Good luck.
Click to expand...
A HEADS UP.... Followed your directions and after 50 brake pedal pump/bleed cycles (via my wife whom I wouldn't let her get near a tool/part) the Brakes bleed out with no air. Im hung up for pads now the Charlotte N.C. MG dealer didn't have them in stock..a bit odd. It would seem the action of lifting the caliper up level with the reservoir did the trick. Thanks again Sir for the tech tip. This is my first MG I'm returning to riding after a 35 year break. Taking the Motorcycle Safety Class @ our local Harley dealer, 3 days course.
 
Howardhughes said:
Im hung up for pads now the Charlotte N.C. MG dealer didn't have them in stock..a bit odd.
Click to expand...
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Howardhughes said:
A HEADS UP.... Followed your directions and after 50 brake pedal pump/bleed cycles (via my wife whom I wouldn't let her get near a tool/part) the Brakes bleed out with no air. Im hung up for pads now the Charlotte N.C. MG dealer didn't have them in stock..a bit odd. It would seem the action of lifting the caliper up level with the reservoir did the trick. Thanks again Sir for the tech tip. This is my first MG I'm returning to riding after a 35 year break. Taking the Motorcycle Safety Class @ our local Harley dealer, 3 days course.
Click to expand...

You are most welcome. I’m thrilled you found it helpful in getting your task completed successfully. 😁👍👌


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