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PowerBleeder question 200 1987

posted by  someone claiming to be LeeMonster on  Mon Oct 11 10:05 CST 2004 [RELATED]

Soon I'll be replacing my master cylinder and flushing the brake system. I plan on 'bench bleeding' the mc, and then use the Powerbleeder to flush the system. Before I begin any work on my car, I like to 'visualize' all the steps in the process, so I can anticipate where I may run into trouble. My question is regarding the Powerbleeder. The instructions say to fill the mc tank with clean fluid, fill the PowerBleeder, attach the cap and pressurize the tank, What about the air that will be in the Powerbleeder tube? Won't that be forced into the mc tank? I'm thinking the air will remain at the top of the mc tank and won't enter the brake system, but I don't know for sure. Am I obsessing over nothing? Thanks in advance for your help.








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    PowerBleeder question 200 1987

    posted by  scorch on  Mon Oct 11 15:00 CST 2004
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    I just used the power bleeder for the first time, and yes there was air in the line that you are speaking of, as well as the fluid. It turned out to not be a problem, since the power bleeder kept plenty of fluid in the reservoir at all times so that no air got in the system during bleeding. That's all you have to worry about really, that the reservoir stays full or mostly full. I have to say that the power bleeder was a major improvement in life from the old days of getting my wife out to pump on the pedal and keep the reservoir full.

    I have found that because of the dual hydraulic system in the Volvos, with the funky bleeding sequence, it is much easier to do the job if the car is on jacks with the wheels off.








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    PowerBleeder question 200 1987

    posted by  Trev29 on  Mon Oct 11 10:54 CST 2004
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    last visit: Fri Oct 17 05:56 CST 2014
    [RELATED]

    Before you start bleeding the calipers make sure the pedal has firmed up after installing and filling the new MC. If the pedal drops to the floor you still have air in the MC and caliper bleeding won't help.

    Air rises so will exit out of the fluid in the reservoir if you don't rush things (ie. give bubbles chance to leave fluid).

    --
    1980 245 Canadian B21A with SU carb and M46 trans







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