just 2 cents worth.
i wouldn't hold or try to depress the peddle all the way to the floor. just give it a couple good pumps about mid stride. then hold the last one in mid stride and open the bleeder just a bit till fluid runs with no noticeable air. pump again and open the bleeder again to confirm no air. tighten down and move to the next long line which is driver side rear. each time you pump and open check the m.c. to be sure there is enough fluid to do a complete cycle. every thing should be fine.
of course if you need to do it by yourself you could invest in a pump.
1972 350sl Red/Blk 117k
1988 420sel charcoal/Blk 140k
1987 420sel gold/tan 128k
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