- Greenbarn - VDR
I just drove to my shop and brought back my mityvac, and it worked as designed on my bike. The bleeding took about 10 minutes. Here's what I did. I'll try to highlight a few things that can go wrong, making this effort unsuccessful.
1) Hook up a hose(s) between bleeder and mityvac. It's important to find a hose that fits tight on the bleeder so's it can draw vacuum on it and pull fluid. There should be several adapters in the kit. If you don't get a good seal here, you won't pull fluid through the system, and you won't get the air out.
2) Fill the brake fluid reservoir with clean fluid - I sucked all the old stuff out with a big syringe to minimize the amount I had to pump through to get all the old out.
3) It's important to not let the reservoir go dry - if it does you start over with air in the system. The thing holds surprisingly little fluid - I sucked it dry twice. It helps to have someone watch it and keep it full.
4) Open the bleeder - a quarter to half turn is sufficient - just enough to let fluid out - any more and it takes too long to close it.
5) Draw vacuum on the mity vac - you can tell if it's working if you get fluid coming out of the bleeder into the hose (hopefully you have a clear hose), and eventually into the mity-vac collection chamber.
6) Draw through enough fluid to get all the old stuff out. MAKE SURE you keep the m/c full. You need to draw a few ounces of fluid through as rapidly as possible in order to try to clear the air out.
7) Tighten the bleeder. Take off the mity-vac.
refill the reservoir (if needed). Pump the brake handle a few times. You should have "pedal". If not, pump it a few times.
This is what I just did on mine. I didn't have solid pedal first pump, but it was because I just had the caliper off earlier - it takes a couple of pumps to tighten the pads up on the rotor.
Hope this works for you D1. This is actually a lot easier than making a mess taking off the line at the m/c.