Getting the air out of brake lines.

[wilcoy02]

I just did all my breaks and could not get any pressure on the handle bar brake on the 83 gl1100. I finally bought a new oil can the kind that you pull the handle and it squirts out oil, Filled it up with dot4 and put a tube on the oil spout. Connected the tube to the bleeder valve--squirted the dot 4 into the lines and out the reservoir on top. This cleared the air bubbles and got my master to pump.

 

[Steve83]

Cool! Nice idea! A reverse bleed. Air bubbles want to travel up, so this should be the best way to clear the lines and master cylinder. However, unless you turn the caliper so that the line fitting is at the highest point, there will still be some air trapped in the caliper. After the reverse bleed, a traditional bleeding should release the trapped air.

 

[joedrum]

yep great way just love tools like that

 

[tuna boy]

Can I ask why you used dot 4? I had a tuff time bleeding my front brakes. Messed with them for 2 days. Harbor freight had a vacuum bleeder on sale for $21. The $60 Mytye Vac is probably better but the Harbor one worked fine. If you could borrow a vac pump from a friend that would be better yet.

 

[Dusterdude]

Dot 4 has a higher boiling point than dot 3,other than that no difference at all


Sent from my iPhone using Tapatalk