Back under the hood, it's time to complete the new master cylinder installation. First, we installed the adjustable pushrod in its fully collapsed position and found that it was still slightly longer than the OE pushrod. When the master cylinder was seated against the firewall, the pedal height was higher than desired so we reinstalled the OE pushrod and achieved the original pedal height. Extracting the pushrod from the old master cylinder can be a challenge. On an OE master cylinder the retaining clip holding the pushrod inside the plunger is metal and difficult to overcome. We clamped the old master cylinder in a vise and put a metal bar through the pushrod eye and hit the bar outward with a hammer. After a few whacks the pushrod came free. If the master you're working with is a rebuilt unit, the clip is usually nylon and is much easier to remove. No new clip is required as long as the pushrod doesn't come out of the plunger with the pedal arm raised to its highest extent.