Brakes- having to pump?
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Senior User
Joined: Oct 2009
Posts: 187
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Brakes- having to pump?
My brakes have felt the same since I've had the truck. But lately, I figured out that if I pump them a few times before the.re needed I have much better brakes. Which leads me to believe that I've got brake issues. Would it be the booster or air in the lines. I don't see any leaks anywhere and I replaced the master cylinder about 2 months ago. I did bench bleed it when I installed it. Since I didn't step on the pedal while replaceing the mc, I didn't bleed the brakes. I thought it was ok since it felt the same as before.
At this point the truck stops pretty good, but stops much better when I pump the brakes. Where do I start?
At this point the truck stops pretty good, but stops much better when I pump the brakes. Where do I start?
More Turbo
Joined: Jun 2012
Posts: 540
Likes: 1
Bleed 'em.
Any time you swap a major component like that you have to ensure no air is in the lines. Start at the wheel furthest away (passenger rear) then work you way towards the MC. MAKE CERTAIN you check the level of fluid in the reservoir every few pumps and add as needed or you will create work for yourself by pumping air in. Get a buddy to help and make sure they understand to only push the pedal and release it when you tell them (i.e. coordinate with opening and closing of the bleeder valve) so you don't suck air in at the wheel cylinders.
Any time you swap a major component like that you have to ensure no air is in the lines. Start at the wheel furthest away (passenger rear) then work you way towards the MC. MAKE CERTAIN you check the level of fluid in the reservoir every few pumps and add as needed or you will create work for yourself by pumping air in. Get a buddy to help and make sure they understand to only push the pedal and release it when you tell them (i.e. coordinate with opening and closing of the bleeder valve) so you don't suck air in at the wheel cylinders.
Posting Guru
Joined: May 2010
Posts: 1,867
Likes: 3
From: Alton, MO
I like gravity bleed. Open the bleeder of the wheel farthest away and let it flow until new fresh fluid runs out. Then work your way back towards the master farthest wheel to nearest wheel. Also check adjustment of the rears if a disc/drum truck. If 4 wheel drum adjust all the wheels.
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Don Vito
1948 - 1956 F1, F100 & Larger F-Series Trucks
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Oct 31, 2016 10:41 AM
