problem with the brakes

[yota_loyalist]

i got a problem with my brakes
i have to pump them up for good brake, like they need to be blead, the pedel holds after i pump it up
i rebiult the rear brake cylinders
bleed the system like a million times
it holds so i dont think its the booster or master
and the calipers are good,
is it the porportioning valve or what?

[4Hummer]

Have you adjusted your rear's ? Theres an adjustment dial you can get at from behind, Or you can try reversing the truck and yanking the P-Brake several times
:snail:

[Rockcrawlintoy]

air in the brakes. rebleed the whole system.

Drew

[NavyDood]

Bleed in this order.

left rear
right rear
right front
left front
porportioning valve

[480v]

most break shops don't even know about the proportioning valve around here.

[yota_loyalist]

most break shops don't even know about the proportioning valve around here.
good idea thanx didn't think about bleeding the proportioning valve.