Brake line fluid flush
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Fleet Mechanic
Joined: Jun 2009
Posts: 1,346
Likes: 4
From: Connecticut
Brake line fluid flush
Any brand fluid? Whats a good fluid to go with?Theres nothing special to do to flush the fluid in these trucks right? Same as any other vehicle right?And any idea what size hose to fit over the bleeder valve on caliper?
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
I used a DOT-3 brake fluid and put a hose on the bleeder, don't remember the size, then opened the bleeder at the rear passenger and let it gravitate out while keeping the bowl full. Then went to the other calipers and did the same.
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Fleet Mechanic
Joined: Jun 2009
Posts: 1,346
Likes: 4
From: Connecticut
So No need to pump brake pedal? Gravity will do it?
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Brake Fluid Flush Made Easy BY Fat Diesel. Great write-up. Thanks Andy.
Edit: I did mine this way but used compressed air at about 10 psi attached to a schrader valve I mounted on an old brake reservoir cap. I didn't have access to a speed bleeder. Couldn't get it to seal very well but it was faster then gravity. Had my neighbor pump the brake after fluid flush just to be sure I got all the air out at each caliper.
Edit: I did mine this way but used compressed air at about 10 psi attached to a schrader valve I mounted on an old brake reservoir cap. I didn't have access to a speed bleeder. Couldn't get it to seal very well but it was faster then gravity. Had my neighbor pump the brake after fluid flush just to be sure I got all the air out at each caliper.
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Yes, gravity will do it. It may take a little longer then the link Robin has but it worked great for me. I just let it drain and drain, with beer between filling the bowl. 
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
The wife and I did mine. i didn't have the power bleeder deal. She pumped the pedal, I opened and closed the valves.
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Very nice Joe. 
Gives me some ideas I can use to get my compressed air method to work without leaking. Thanks for sharing.
Gives me some ideas I can use to get my compressed air method to work without leaking. Thanks for sharing.
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Laughing Gas
Joined: Dec 2005
Posts: 1,087
Likes: 189
From: Reno, NV
Anyone ever use a vacuum bleeder? My old neighbor was a retired Porsche mechanic and swore by them. He offered to let me use his once, but the fittings didn't work with the fittings I had on my compressor/air hose.
Logistics Pro
Joined: Aug 2005
Posts: 3,884
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From: Morgan Hill, CA
Brake Fluid Flush Made Easy BY Fat Diesel. Great write-up. Thanks Andy.
Joe- Nice homemade one!
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Fleet Mechanic
Joined: Jun 2009
Posts: 1,346
Likes: 4
From: Connecticut
Got it done last night. Tried the gravity bleeding but unless i was willing to wait 4 hours it wasnt gonna work. Wife pumped while I turned the bleeders. Brakes really needed a bleed too. My truck stops soooo much quicker.... Thanks
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