bleeding brakes on a 1989 gmc r3500
#1
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bleeding brakes on a 1989 gmc r3500
recently replaced the front passenger brake line after it collasped on me.and i found out i have no clue how to blleed the rear brakes.i can bleed the front brake calipers but i dont know about the rear brakes.do they have a bleeder screw to?
#2
Retired
On the backside of the brake drum, just above the brake line should be a bleeder screw.
Considering the age of the vehicle, those bleeder screws are probably seized in pretty good. I'd be careful trying to crack those bleeders.
Considering the age of the vehicle, those bleeder screws are probably seized in pretty good. I'd be careful trying to crack those bleeders.
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#3
Senior Member
True Car Nut
squirt them with wd40, a few light strikes around where the bleeder is and sometimes it will come loose. make sure you are using a good six point socket or wrench. if i am working on an old vehicle that hasent been messed with i nomally go and get new ones first and replace them because most times they come out but the hex part strips and you have to use vise grips
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wes104 (06-16-2014)
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#6
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brakes
see what im having problems is i changed the front passenger brake line and only bled the front two calipers .and know when ever i stop the back brakes act like they don't work.like if you stop with the front tires in a mud pit and back tire on dry ground it wont stop it just slides and back tires will just roll.. I've followed the lines and they go from the master cylinder to a valve right below the radiator and it branches out.i cant jack it up right know to trace them the rest of the way because grounds to wet.and thank you all for the help so far.
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wes104 (06-16-2014)
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