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Thanks to Billman brake pedal travel.

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Thanks to Billman brake pedal travel.

 
Old 10-04-2017, 05:12 PM
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Originally Posted by darcyw View Post
you know, i've always wondered this.

darcy
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Maybe, this is one of those "dealer prep" things?
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Old 10-04-2017, 08:37 PM
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The manufacturers would be idiots to leave that much liability in the inept hands of their dealership servoce depts.

I know how I'd do it. I'd have something that hooks up to all four bleeders at once, and a brake fluid cap that has a hose attached, and apply a vacuum to bleeders at same pressure as the fluid is pushed, so it doesn't agitate the fluid and cause bubbles.
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Old 10-05-2017, 04:27 AM
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To get the fluid pumped into the system a the factory, they likely use a pressure or vacuum system.

A factory does not ship a car with no brakes. The car has to make it on/off of several shipping platforms before arriving at a dealer. It also has to be inventoried (parked/moved) at a dealer.

I doubt they use any method involving pumping fluid via the MC piston. Pushing the pedal to the floor or past a certain point while bleeding brakes poses a good chance of damaging the master cylinder seals. Usually, this issue presents itself on older, more badly maintained brake systems. But you shouldn't full stroke any brake MC. Read about it before claiming to have had ZERO problems pls.
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Old 10-05-2017, 11:10 PM
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How can air escape when the brake pedal is depressed? Wouldnt the master cylinder reservoir be closed off?
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Old 10-06-2017, 03:52 AM
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Originally Posted by slybunda View Post
How can air escape when the brake pedal is depressed? Wouldnt the master cylinder reservoir be closed off?

The theory is that the bubbles break down into small bubbles....work their way up to the MC piston and sit there.

When you remove the pressure on the pedal, they escape thru the ports, and into the master cylinder reservoir...where they are harmless.
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Old 10-06-2017, 05:28 AM
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Whats the actual DIY on this? Literally just wedge the brake down overnight?
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Old 10-06-2017, 06:04 AM
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What happens if i leave the pedal wedged down for 2 or 3 nights in a row?
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Old 10-06-2017, 07:04 AM
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Originally Posted by slybunda View Post
What happens if i leave the pedal wedged down for 2 or 3 nights in a row?
LOL

Just do it for 1 night. See how it goes. I don't think 3 nights would damage it.

Make sure the car is in a dry place when you do this
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Old 10-06-2017, 07:09 AM
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Originally Posted by maranelloboy05 View Post
Whats the actual DIY on this? Literally just wedge the brake down overnight?

yes. but...probably do the wedging as the car is idling so you can be sure you're getting vacuum assist.

you get vacuum assist for like 1 push after the car is turned off. But if you're fumbling around and pushing the pedal in/out to get the wedge set, you may deplete it.
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Old 10-06-2017, 01:12 PM
  #20  
 
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Do you need to disconnect the battery?! Yes??
I need to install my ABS unit and I've been putting it off.
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