Brakes need 2 pumps to get anything

Suspension, steering, brakes, wheels & tires

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Redcrew71
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Brakes need 2 pumps to get anything

Post by Redcrew71 »

hi..71 f250 all original. need to pump 2x to get some brakes wondering which part I should start with the booster or ?
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1972hiboy
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Re: Brakes need 2 pumps to get anything

Post by 1972hiboy »

Where you start is getting the truck off the ground wheels and drums off and visually inspecting everything before throwing parts at it. You could have a wheel cylinder leaking causing air to get into the system. you could have brake shoes out of adjustment, or a combo of both. Regardless, id say get your eyes on all four corners before coming up with an action plan.
Rich
1973 f350 super c/s 460/c6 22k orig miles
1972 f350 srw crewcab special 390
1972 f250 4x4 sport custom 390fe Red
1972 f250 4x4 custom 360 FE " Ranger Ric"
1972 f250 4x4 custom 84k og miles 390
1971 f250 4x4 sport custom 56k og miles. 360
1970 f250 4x4 428 fe hp60 205 d60
Dont eat yellow snow.....
Redcrew71
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Re: Brakes need 2 pumps to get anything

Post by Redcrew71 »

hmmmm....well I have brakes after 2 pumps so cant be a leak can it?
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1972hiboy
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Re: Brakes need 2 pumps to get anything

Post by 1972hiboy »

If the truck is new to you it would be a good idea to get your eyes on it since you may not know the history. Your truck has a dual reservoir master cylinder. you could just be pumping up and using the front or back. You may try making sure sure all the brakes are adjusted correctly, loose drum brakes will take alot of slack out of the pedal if loose.
Rich
1973 f350 super c/s 460/c6 22k orig miles
1972 f350 srw crewcab special 390
1972 f250 4x4 sport custom 390fe Red
1972 f250 4x4 custom 360 FE " Ranger Ric"
1972 f250 4x4 custom 84k og miles 390
1971 f250 4x4 sport custom 56k og miles. 360
1970 f250 4x4 428 fe hp60 205 d60
Dont eat yellow snow.....
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DuckRyder
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Re: Brakes need 2 pumps to get anything

Post by DuckRyder »

What happens if you give it 2 pumps to get brakes and then hold steady pressure? Does the pedal sink slowly or stay up?

Agree though, put eyes on all four corners and bleed the system... retest.
Robert
1972 F100 Ranger XLT (445/C6/9” 3.50 Truetrac)

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Redcrew71
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Re: Brakes need 2 pumps to get anything

Post by Redcrew71 »

thanks...will be diving in this weekend
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