View single post by mhoward

Posted: Fri Apr 23rd, 2021 11:42 am

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mhoward
Hey look ~ they ~ bounce!

Joined: Sun Oct 22nd, 2017

Location: Evansville, USA

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I am planning/preparing to perform a Mustang rear disc brake swap on my 2003 Ranger over the Memorial Day weekend. In addition, I am replacing soft lines, rotors and calipers on the front as well. I have all the parts and I'm just waiting for the long weekend to "Git 'er Done". As part of this project, I want to completely flush the system of the old, dark fluid and fill it with fresh clean DOT 4 or DOT 5.1 juice.

Since everything is going to be open for quite a while when I am replacing lines, calipers, etc., I was thinking that I would just DRAIN the system, then pour new fluid in until it runs clear as I don't want the old dirty fluid flowing through my new calipers. Then, when I get the new parts all installed and connected, I would just fill and bleed the system in the normal manner.

I was discussing my plans with a fellow gear head at work and he said that was a bad idea. He said that would introduce air into the system (duh!) and I would never get it properly bled and free of air. Now, he is a GM guy, and maybe that is true on GM stuff, but why would I not be able to fully bleed the air out? I would expect there to be a ton of air in the system when I drain it dry, but I fail to understand why I couldn't bleed the system to my satisfaction. Am I missing something?

Just FYI: I was a professional auto mechanic for many years, back in the day, with dozens of full brake jobs under my belt, so I'm not new at this. :-)

____________________
-- Michael

2003 Ranger Edge / Extended Cab / Flareside / 3.0L FLEX / 5r44e Auto / 2WD / 8.8 LS 4:10 / Sonic Blue Pearl

So many mods... so little time...