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Sinking brake pedal. A few questions. 700 1989

posted by  NJC on  Thu Jun 29 08:31 CST 2006
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last visit: Sun Jul 24 13:42 CST 2011
[RELATED]

When stopped at light, I am experiencing the steady sinking brake pedal. I'm assuming master cylinder internal seals. A few questions:

- I want to plug all three exit (ABS) lines on Master cyl to isolate leaking seals (as per FAQ). Does anyone know the thread sizes of brake line to master cyl?

- Since this car has ABS I will be introducing air to the ABS unit as well. Will simple wheel bleeding alleviate air in ABS unit?

- Finally could someone please verify proper bleeding sequence for 1989 745 with ABS? FAQ was not conclusive.

I did note the caution of line-clamping when bleeding ABS too. Thanks to FAQ (again and again and again).
--
Norm Cook; Vancouver BC; 1989 745T 212,000KM






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