rocky61201
forum member
Learned a new trick for bleeding the clutch and thought I should share. Had to flush my brake/clutch fluid and replaced the clutch master cylinder as well. The first master cylinder I bought wouldn't build up pressure for the life of me so I figured it was defective. Exchanged it for a new one but this time I wanted to make sure it was good. Before installing in the car under the dash (which is a pain in the ass) I connected my braided clutch line to the master cylinder and then connected a small funnel to the master cylinder inlet using a small section of clear plastic half inch tubing. Zip tied that so it wouldn't slip off and then hung it up using a string so the whole thing hanged vertically. Poured the DOT 3 into the funnel and starting pumping the master cylinder by hand until I got good flow out of the clutch line. Then capped the clutch line using a vacuum cap and secured with a zip tie so it wouldn't pop off.
Started pumping by hand and then you can see the air bubbles moving up and out thru the clear plastic tube. After all bubbles were out and the master cylinder rod firmed up I capped both ends and finished the install. I got a little air in the system when taking the caps off and plugging into the master cylinder and throw out bearing but it took only a few pumps of the clutch pedal and I was GTG.
Last thing which is kinda important. The air bubbles seem to bleed out a lot faster pumping the master cylinder rod really fast in the middle of the stroke. Don't let the rod fully extend and don't push it in all of the way.
Started pumping by hand and then you can see the air bubbles moving up and out thru the clear plastic tube. After all bubbles were out and the master cylinder rod firmed up I capped both ends and finished the install. I got a little air in the system when taking the caps off and plugging into the master cylinder and throw out bearing but it took only a few pumps of the clutch pedal and I was GTG.
Last thing which is kinda important. The air bubbles seem to bleed out a lot faster pumping the master cylinder rod really fast in the middle of the stroke. Don't let the rod fully extend and don't push it in all of the way.