How do you change the master cylinder on a 1984 VW Vanagon?

The master cylinder is behind the the speedo cluster, pull on the top cover of the cluster dash to access master cylinder. remove the screws the secure speedo cluster and unplug wire harness to light switch,dash lights ect. I used a turkey baster to remove brake fluid. using a metric open end wrench remove brake lines, then remove the to nuts off the servo that holds the master cylinder to the bus. I stuffed old rages in the dash around the master cylinder to catch fluids or nuts if they fell. Remove master cylinder by pulling it straight out of servo then once clear pull up and out of dash. Most replacement cylinder don't come with a reservior, use the old one by carefully and firmly "pop" it out and install in the replacement. reverse instructions to reinstall. once done fill master with clean DOT3 and then bleed brake lines.