Cost: $25 or less

Difficulty:

Time: 30min

Bleeding the brakes or the BMW takes time and usually two people. If you want to do it yourself and save some time, you can purchase a pressure bleeder... or make one.
You start to know me so let's try to make one.

Building a pressure bleeder (original procedure)

• Cap from a '90 Volvo (ate brakes) no abs p/n:1272107
• Small garden pressure sprayer 1/2 gal or 1gal
• Small 1/8" fitting pressure gauge
• 1/8" brass T fitting
• 1/8" male/male union fitting
• 1/8" hose fitting
• 2 x M10 flat washers
• 1/4" ID diameter clear hose
• RTV compound and Teflon tape
  

With the model of pressure sprayer I bought, nothing was assembled. For once I was happy because you can just trash all the pieces except the plastic connector that hold the hose to the bleeder.

1. Take your "Volvo" cap and remove the center plastic insert with a prying tool.
	2. As you can see the cap has a hole in it, we will melt it with a soldering iron in the outside and insert a generous load of RTV in the inside later.
3. Before going farther with the cap, take all the brass hardware and assemble it with Teflon You should end up with something like in the picture below. You can either add the gauge to the cap assembly or directly onto the pressure bleeder.
	4. Back to our cap, drill a 3/8" hole in the center.
5. Now the messy stuff. Get your RTV and fill the center of the cap (from the inside) with a little bit. Grab some rags, you will need them. I inserted a piece of plastic in the middle to reduce the mess. Press the RTV with a washer in the middle
	6. Once you cleaned all the RTV that spilled out, insert the union fitting through the cap. (Then clean the RTV again, and again) Turn the cap and insert the last M10 washer, use a little but of Teflon tape and tighten the gauge and fitting assembly on top of the cap.

The rest is easy, connect one end of the tube to the fitting and the other end to the pressure bleeder, use hose clamps if needed.
Grab a fresh bottle of ATE brake fluid and start flushing your brakes.

To flush the brake fluid, the easier way is to use your wife's favorite turkey baster and suck the old fluid out of the brake fluid reservoir. Clean the inside if you have deposit.
Poor some of the new fluid inside the reservoir and connect your new bleeder cap.
Build the pressure up to 15 - 20 Psi.
Start bleeding the brakes starting from the rear right, rear left, front right then front left (always from the farthest to the closest from the brake reservoir).
Keep a close eye on the reservoir level, you don't want it to go dry. To fill it up, just release the pressure gently, poor more fluid and place the cap back.