Join Date: Nov 2016
Location: America's Dairyland
Can't get a good seal for brake fluid replacement
Over the weekend I worked on replacing my front brake fluid. A few years back I purchased a Harbor Freight vacuum pump to make this an easier job, but this is the first time I've used it on the Wee.
I had a heck of a time getting the pump tube to seal on the nipple. When I used the pump, it introduced air into the tube and decreased my pump efficiency. Also, it introduced the possibility of air getting into the brake system.
I should note that I'm fairly confident the bubbles I saw in the vacuum hose were not coming from the brake system -- I'm not experiencing any symptoms of air in the system before or after my project (spongy brake handle, etc.).
I tried a couple of different approaches to get it to seal, including:
- A small spring clamp, but the clamp was too long for the nipple.
- Holding pressure on it with my fingers, but it proved impossible to hold, pump, and fill without three hands.
I'm open to suggestions, as I plan to do the rear brake this weekend.
If it's a good day to wash the bike, it's a better day to ride the bike.