Remove the two nuts that hold the master cylinder to the booster. Unplug the brake fluid level switch if it has one.
Remove vacuum line from booster (goes from booster to intake manifold).
Slide master cylinder forward off of booster studs. The brake lines should flex enough to allow this without removing them from the master cylinder. This will prevent having to bleed the brakes later.
Get a flashlight and look at the brake pedal. There is a clip that holds the pedal to the booster rod. Remove the clip and slide the rod off of the brake pedal. Be careful not to damage the brake switch or wiring.
There will be 4 nuts holding the booster to the firewall. Remove the nuts and the booster should be removable.
Re assemble in reverse order. Make sure the master cylinder seats properly into the booster rod when reinstalling. Don't forget to hook your vacuum supply line back up.
This is just a general overview, your vehicle may differ from what i described.
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