bleeding brakes/ proportioning valve

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Apr 4, 2017 | 09:15 AM

dthut

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Mountain Pass

Joined: Mar 2015

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bleeding brakes/ proportioning valve

hey guys,
what is the proper brake bleeding procedure with the proportioning valve?
79 f250 2wd

Apr 4, 2017 | 09:55 AM

meangreen92

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Joined: Jul 2005

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Should be bleed the rears as normal, and then push in and hold down the metering valve pin and bleed the fronts, After the fronts are bled, release the pin and it should pop back up.

Apr 4, 2017 | 11:06 AM

ultraranger

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Joined: Apr 2011

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From: El Dorado, Arkansas

Depends on what GVW your F250 is rated for and what brake valve you have. If your truck is under 6900# GVW, you should have a cast iron Kelsey-Hayes brake valve. If that's the case, the pin is pulled outwards when bleeding the front brakes.

If your F250 is rated over 6900# GVW, you should have a brass Weatherhead brake valve. If that's the case, the pin would be pushed inwards.

Apr 9, 2017 | 09:48 AM

dthut

Thread Starter

Mountain Pass

Joined: Mar 2015

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to push the pin in.. am i just pushing in it as it sits? or do i need to turn that brass nut? it pushes in about a 1/16

Apr 9, 2017 | 10:29 AM

ultraranger

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From: El Dorado, Arkansas

Quote:

Originally Posted by dthut

to push the pin in.. am i just pushing in it as it sits? or do i need to turn that brass nut? it pushes in about a 1/16

Only the pin gets pushed and held in (on a truck rated 6900# GVW or greater) while bleeding the front brake circuit. Do not turn the nut.

Apr 9, 2017 | 01:21 PM

dthut

Thread Starter

Mountain Pass

Joined: Mar 2015

Posts: 184

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Quote:

Originally Posted by ultraranger

Only the pin gets pushed and held in (on a truck rated 6900# GVW or greater) while bleeding the front brake circuit. Do not turn the nut.

just to confirm i'm doing this right, do i push and hold the pin while someone pumps the brake? and then realease the pin and open the bleeder screw on calipar?
im a little confused on the sequence

thanks