Sounds like the brake shoes are not adjusted almost to the drums when the brakes are at rest. The brake return springs will always try to collapse the wheel cylinders if the adjusters don't limit the travel of the shoes hold them near the drum. The number of pumps it takes to move enough fluid to push the shoes to the drums depends only on how far they have to move. When the shoes reach the drums, the pedal becomes firm and stays firm. When the pedal is released the springs return the shoes to their rest position and the cycle is repeated the next time braking is required. If there were also air in the system, the cycle explained above would be the same but the pedal would always feel spongy. If it were only air in the system, one pump of the pedal would probably be enough but the pedal would always feel spongy Minnesota Marshall On Sat, 3 Jan 2004 10:57:18 -0800 (PST) William Barrie <blueweststudio@xxxx> writes: > HAPPY NEW YEAR FELLOW MEMBERS, > > I just installed a new master cylinder and I have a > problem.Here's whats happening. First, all the wheel cylinders have > been rebuilt, new lines and no leaks.I bench bled the master > cylinder following the supplyer's instructions, prior to installing. > After installing the master, I re-bled all the brake lines in the > proper order.Now, when I first press the brake pedel, it goes to the > floor and after a few pumps it is up fully.While applyingconstent > pressure to the pedel, the pedel remains firm. If I release, and > wait 30 seconds, the pedel will now go to the floor when > depressed.Three more complete line bleeds and the same result. Did I > do something wrong when I bench bled the master cylinder? > > Thank you, > > Barrie > > > --------------------------------- > Do you Yahoo!? > Free Pop-Up Blocker - Get it now > > [Non-text portions of this message have been removed] > > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > For list server instructions, go to > http://www.chrysler300club.com/yahoolist/inst.htm > > ------------------------ Yahoo! Groups Sponsor > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/Chrysler300/ > > To unsubscribe from this group, send an email to: > Chrysler300-unsubscribe@xxxxxxxxxxxxxxx > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > > ________________________________________________________________ The best thing to hit the internet in years - Juno SpeedBand! Surf the web up to FIVE TIMES FASTER! Only $14.95/ month - visit www.juno.com to sign up today!