I used this method to cycle the solenoids and the pump. Close the left internal bleed screw. . Brakes can be bled manually, with a power bleeder, injector tool or vacuum bleeder. Make sure the pedal feels firm when you have finished, and give the car a road test to make sure the brakes are working properly.
A couple of tips I found helpful when working on 80 brakes. There is a very brief explanation on the Ross tech site but surely there is more to this I've googled a bit and found some info but is the A4Q any different, any thoughts? I've had to do it several times due to all the frozen caliper change outs. Then try loosening the screw. This procedure has to be repeated several times to make sure that no air bubbles are left in the brake lines. The pads wore so thin that the brake fluid level dropped too low in the master cylinder reservoir. Start with the secondary section. Here are some important tips and warnings you should be aware of before bleeding or flushing your car for the first time by yourself.
The system must be rebled after performing this process. Pedal feels the same as before. It goes on for like 10 or 15 cycles. Once the air has been removed, repeat the process with the front bleeder on the modulator. Besides the brake lines, you need to bleed the brake master cylinder when you remove it for repairs to ensure proper operation.
He replaced most of the hard lines and the master cylinder. If the brake pedal is depressed with the reservoir cap removed, then brake fluid will spatter. It has four wheel-speed sensors, but is a three-channel system. Recently Landtank worked on my brakes. Perform the hydraulic service and bleed at the wheels using the published sequence. If you do get a spot on your paint, make sure that you blot it with a paper towel - don't wipe or smear it.
The on-screen instruction are not exactly clear, e. It is totally impossible for any trapped air in a sealed brake system to just dissipate. All that will do is run the pump. I've had to do it several times due to all the frozen caliper change outs. Fluid came out, but no bubbles.
See our article on Jacking up your Mk4 Jetta for more info. Then attach a length of tubing of the appropriate size to the reservoir jar; you'll need to connect the other end of the tubing to the master cylinder's ports, in turn, during the bleeding procedure. If you're doing this solo, put the laptop on the driver's side roof so you can access it easier. At this stage, if you are unable to put the plastic bottle in a stable position, you may have to ask a friend or your assistant pumps the brake pedal until all the fluid has been drained into the bottle. First you need to bleed the brakes first. Put the other end of the tube into a small, clear bottle with an inch or two of clean brake fluid in it.
I posted this here in case you guys are able to help - it might also help any other noob's who are attempting this retrofit. Torque: 11 Nm 112 kgf-cm, 8 ft-lbf 5 Repeat 3 and 4 until all the air in the fluid has been bled out. The Bosch 5 system was also used on 1996 to 1999 Chevy Caprice and Impala, Buick, Estate Wagon and Roadmaster, and Cadillac Deville, Eldorado, Fleetwood and Seville. Make sure that the seal on the inside of the reservoir cap is seated correctly as well. Neutral would have also done the trick.
However, if you can afford the vacuum pump, buy it. But there's a simple solution to that: Never let any air enter the system. If you are not equipped with these tools, you have to make a decision on whether to proceed. Make sure that you don't run out of brake fluid in your reservoir, or you will have to start over again. Bleeding the brake system after changing the brakes can be hard on some anti-lock braking systems.