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Old 09-06-2003, 01:45 AM
kennysin's Avatar
kennysin kennysin is offline
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Join Date: Jan 2003
Location: Singapore
Posts: 59
I have often wondered about the durability of the master pump and whether there is a recommendation for a service or replacement interval.

Most of the forum members would have cars at least 20 years old, and critical safety components with rubber seals in them surely will fail at some time. Although I regularly inspect brake pads and replace the brake fluids yearly, the issue of the master cylinder is usually ignored. The several times I broached it at my workshop, the argument is that failure is rare, and even in that event, the dual circuit setup preserves safety.

From your experience, this does not appear to be the case. Does anyone routinely include the master cylinder in the regular service?
1983 w126 280SE - daily drive
1983 w123 200 - sold
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