Question about 1987 Toyota Pickup
I replaced the booster and master cylinder. The front brakes bled properly with pumping and then falling to the floor when the fluid was released, however the back brakes would not do this. I got all of the air out of the line (as far as I can tell) but still have no pressure behind my brake pedal. My manual mentions something about a check valve but I'm not sure where that might be or if there is another solution to this?
When you bleed brakes you always have to start at the farthest away,back passenger tire then back passenger side then from passenger side then front driver side then to the master cylinder ,you need someone helping you when your doing this who knows what they are doing to pump the brakes and bleed them in that order
Posted on Jan 16, 2013
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Posted on Jan 02, 2017
SOURCE: Tacoma front brakes do not work
it sounds like you are not bleeding in the right sequence around the truck and also the vehicle has to be level. but start at the RR,LR,RF,LF and also make sure the push rod for the master cylynder is actually engaging.
Posted on Jan 20, 2009
i try to help you, firts refill brake fluid container,open purge valve in one wheel front only,wait few minutes when drops fluid, close this valve and open other wheel, same procedure, finally repeat this in each 4 wheels
Posted on Jul 14, 2009
Assumeing you have no big leaks in the new brake lines witch you would see because there would brake fluid all over the ground I would say you didn;t bench bleed the new master cylinder There is air in this part when you buy it and you need to get it out before it will work Heres how you do it first you need a kit it consests of plugs that you screw into the holes that the brake lines go into but they have fittings for hoses to plug on to them you put the master cylinder into a vice screw the plugs into the holes put the hoses on the fittings and put the other end of the little hoses into the cylinder resivior fill the resiviors with brake fluid then take some kind of a tool i like to use a 6 inch 3/8 ths socket extentoin because not sharp but you could use a screw driver And push the piotion in from the back of the unit repeataly until you see now more air bubbles coming out of the two little hoses that are in the resiviors like ten or so pushes Then reinstall hook up the lines and bleed at wheel cylinders with wheel cylinder bleeding always start at the fertist wheel and work your way back to the closetes wheel Its not as hard as it may sound good luck
Posted on Nov 11, 2010
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