How do you change the power brake booster?? The bolts inside the cab on the firewall are easy enough to figure out as is detaching the master cylinder, but how do disconnect the "plunger" or whatever the part is called that's connected to the brake pedal??
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unbolt the nuts holding the master cylinder to the power brake booster and move it gently to one side without undoing the brake lines. next unbolt the bolts holding the booster to the firewall and vacume line and remove. install in reverse order.
Slide the tube nut wrench over the brake line to the master cylinder connection. The master cylinder is normally on the driver's side of the engine bay and mounted on the firewall. Orient the wrench so that it fits over the tube nut on the end of the brake line.
2Disconnect the brake line. Turn the nut counterclockwise to remove. Note the location of each brake line. There are four lines total, and they need to be put back in the same location when reinstalling the lines. You may want to mark them with masking tape and permanent marker.
3Unplug the master cylinder cap electrical plug.
4Remove the brake master cylinder to brake booster bolts with a socket wrench.
5Back the master cylinder off the brake booster.
6Unbolt the bolts holding the brake booster to the firewall on your vehicle.
7Pull the cotter pin out of the brake pedal to brake booster connecting pin with a pair of pliers. This is done inside the vehicle down in the driver side foot well.
8Pull the brake pedal to brake booster connecting pin out to disconnect the brake pedal from the brake booster connecting arm.
9Mark and remove the vacuum hoses on the brake booster and slide the booster off the firewall.
10Install the new brake booster. Installation is the reverse of removal
Remove the brake master cylinder from the front of the booster, then unbolt the unit from the firewall. there should be two nuts in the engine compartment and two bolts under the dash. The easiest way to the pedal rod is to remove the dash panel. then it pretty easy to get to the rod and the bolts. disconnect the vacuum line from the booster and it comes of the firewall. Replace it in the opposite order.
The power brake booster is fastened to the firewall with studs and nuts that are located up under the dash. You'll need to remove the master cylinder first, then locate the studs and nuts which are on either side of the brake pedal arm. Use a deep socket to remove the nuts, then pull the booster from the firewall.
Press brake pedal several time to exhaust pressure from accumulator, Clean dirt from hydrulic line connections at booster and at master cylinder.Disconnect hydraulic lines from booster and plug all openings. Note; in most cases it is not necessary to disconnet master cylinder brake lines to remove booster.Remove and support master cylinder.Disconnect booster push road from brake pedal. remove booster to firewall nuts from inside vehicle.Remove booster and gasket