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Registered
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If master cylinder seal fails, what happens?
If the seal tears, do you lose your brakes entirely and drive into a wall?
Just wondering about the shelf life of this part.
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1986 Bosch Icon Wipers coupe. Last edited by sugarwood; 05-27-2017 at 11:10 AM.. |
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Fleabit peanut monkey
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Let's just say compromised. Your pedal will be soft but you can pump it up quickly to where it feels better.
There may be levels of being compromised? However, you have a dual braking system. One side can go ti*s up, in the ditch, and the other side (seal) will stop you. I am running my 1981 seals.
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1981 911SC Targa |
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Registered
Join Date: Aug 2008
Location: sectors R&N, SE Pa
Posts: 3,117
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+1 w/ Bob there.
Mine didn't go catastrophic, but I suspected an issue, investigated and addressed it a couple years ago. I found a small leak, and I never noticed it before I looked under the frunk carpet and looked under the dash below the steering column (or, beneath the master brake cylinder but in the cabin - there is a little plastic plug, and the bf dripped extremely slowly). I found it by accident when I was refreshing my pedal cluster. My brakes seemed ok, but my clutch was a bit tough btw (slave cyl) and I thought I might be leaking fluid albeit very slowly. But I never found any on the ground. Instead, the black carpet took some, and the rest dripped to the smuggler box and into infinity. And we aren't talking a lot. I replaced it, the master clutch and clutch slave cylinders, some old lines and even the reservoir as well. Brakes are fine and clutch pedal action is lighter btw. I can't answer your shelf life question, but you can use me as a data point.
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Dan '87 Targa Carrera 3.2 - Fabspeed Cat Bypass, M&K Muffler, SW Chip Venetian Blue |
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Functionista
Join Date: Jul 2011
Location: CO
Posts: 7,717
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They fail slowly in my experience. But we once had a car in where someone had added power steering fluid or oil by mistake. Owner reported it failed quickly. Ended up replacing all rubber based components.
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Jeff 74 911, #3 I do not disbelieve in anything. I start from the premise that everything is true until proved false. Everything is possible. |
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