[6pack] Brake MC

[im sloane]

I have heard stories about someone bleeding the breaks, (not loved LBC but their daily driver), after replacing a caliper or wheel cylinder, and shortly thereafter experienced a master cylinder failure. The reported reason was the master cylinder was being pressed into territory that it didn't travel under normal conditions, and due to slight pitting or corrosion, the seals in the master were compromised.  The block under the pedal is reported to hopefully prevent this.  Obviously not necessary with a new master cylinder.

YMMV,
Sloane
________________________________
From: 6pack <6pack-bounces at autox.team.net> on behalf of Richard Taylor via 6pack <6pack at autox.team.net>
Sent: Monday, September 16, 2019 7:57 PM
To: 6pack list <6pack at autox.team.net>
Subject: [6pack] Brake MC

I don’t understand the logic of limiting the travel of the brake pedal, either. While this pedal shouldn’t have to travel even half of it stroke to apply full pressure to the brakes, we wouldn’t want to limit it should there be a failure in, say, half of the system. (Which would require a deeper pedal to make contact.

I don’t know if it applies to this (brake) limiting of the pedal, but there are some clutch operating systems that require a “pedal stop” so that the throwout bearing isn’t pushed out too far during the clutch disengagement. The hydraulic bearing in the Toyota 5 speed conversion would be one of them.

Dick

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