Quote:
Will they come and install them too?
I HATE bleeding brake lines!!
For years, I have been using this method of bleeding brakes on motorcycles and cars, and it has always worked well, even when starting with a dry system. It is very effective when replacing lines with braided, wastes practically no fluid, and takes (once you make the adapter needed) about 2 minutes.
You will need a Mightyvac or some other controllable vacuum source and a clear plexiglass or Lexan plate large enough to cover the top of the reservoir. Contact cement a piece of inner tube rubber (you remember inner tubes?) to the plate to provide a seal against the reservoir, remembering to leave some clear exposed so you can see what's going on. Drill and tap (or glue, use a gun drilled bolt and nut, whatever, as long as it seals) for a fitting to attach the vacuum hose, and thoroughly clean and dry everything.
1 -- If replacing the lines, drain the fluid, install the lines, and make sure they are routed and tightened properly.
2 -- Clean the master cylinder reservoir and fill about 2/3 with fresh fluid.
3 -- Place the plate on top of the reservoir and secure with some wire -- not too tightly, just to hold it in place.
4 -- Apply a vacuum to the system slowly. You will see air bubbling through the fluid, but the level should not drop much. Stop as soon as you have applied as much vacuum as you can -- it does not need a "hard" vacuum, about 23 inches HG should be sufficient.
5 -- Release the vacuum. The fluid level should drop significantly, in fact the first time it may empty the reservoir.
6 -- Refill the reservoir and repeat steps 3 through 5.
7 -- By the third cycle, you should not see any air bubbles.
8 -- Refill the reservoir again and pump up the brakes -- the vacuum usually retracts the pistons completely. Top up the reservoir, apply the brakes as hard as you usually do, and check for leaks. You should have as firm a lever as you have ever felt!
Notes:
-- If the master cylinder is angled down, it helps to get it as close to horizontal as possible to give air an easier escape route.
-- Sometims, fluid will be drawn up the vacuum hose, so make sure it does not get into the pump by using a long downward "U" loop of hose.
-- If and when you try this, post the results, especially if you have problems -- some calipers, Brembos particularly, can be very difficult to remove air from.
Enjoy!
Rob