Quote:
Originally Posted by Maximan1
Flushed the lines today using alcohol. Bleeding the front passenger side I had millions of micro bubbles. I did almost an entire quart of brake fluid through that side and still had microbubbles, however I think this may be from the bleeder sucking in air from around the threads. I'm not sure, I ran out of brake fluid to bleed.
It is still doing the same thing, to a lesser extent. Pass front wheel was significantly hotter than driver front wheel after about a 5 mile drive. I may replace the passenger front caliper (under warranty).
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Off subject maybe. Since the 1960's I had always adjusted my front wheel hub end play by hand. When I did that on the Mercedes it resulted in the me getting the clearance too tight and I roasted all of the new grease I packed into the hub and had to clean that all out and regrease. Fortunately, I had the sense to drive it a few blocks and check for the hub getting hot.
After that I started using the Mercedes service manual method using a dial indicator and sins that time in 2008 have had zero issues.
To see if the brakes are dragging jack the front wheels safely up off of the ground. Start the engine up and depress the brakes hard several times. Go out and pic one front tire and rotate it by hand. There should be some intimal drag but after that it should free up with only some tiny amount of drag.
Repeat the break depression and do the same to the other tire.
Air trapped in the lines can also cause the pads to drag because after you release the brake pedal the air in that part of the system is still compressed keeping the pads from returning as they should.