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Old 05-27-2013, 04:14 AM   #1
rfuerst911sc OP
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brake failure indicator light- she's flickering

Yesterday I took my 1976 R90/6 out for a nice drive, weather was great and she ran fine. But I noticed at idle the brake failure light was flickering on and off. Front and rear brakes are working fine, they have good feel with nothing out of the ordinary that I can see/feel. What is the purpose of this warning light ? What is it telling me ? Now that I think about it maybe I should go check to see if the brake light ( bulb ) is working.
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Old 05-27-2013, 05:09 AM   #2
Bill Harris
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This isn't a trick question, is it?

It means that you brakes are about to fail. On that vintage it's probably driven by the brake fluid level in the reservoir, so I'd guess it means that the brake fluid is low.

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Old 05-27-2013, 05:10 AM   #3
Horsehockey
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The "brake failure" light is actually a "low fluid" light. The flickering indicates a couple possibilities: I'd start with removing your fuel tank to access the master cylinder reservoir. Fluid level good? Now examine the two wires to the cap: any chance one of them is loose or making contact with the bottom of your fuel tank? Intermittent contact will short it out and cause a flickering. There are a couple other possibilities, but I'd start with those two.
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Old 05-27-2013, 08:37 AM   #4
Kai Ju
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And the reasons that the fluid level is low is either worn pads, which is unlikely, or that the M/C is leaking, which is likely.
Your frame paint will tell you.
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Old 05-27-2013, 09:04 AM   #5
Bill Harris
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I'll bet it is worn pads, at the least:

Quote:
Originally Posted by rfuerst911sc View Post
09-23-2012
rfuerst911sc OP
Joined: Jun 2012
Oddometer: 56

R90/6 front brake pads
Since purchasing my new to me 1976 R90 I have thought that the front brake performance could be better. It seems to be working fine just not what I'm used to on previous bikes. Still has the under tank master cylinder that was rebuilt per documents provided by seller. Has the single disc rotor. When I had new tires installed three weeks ago the shop said you will need new pads soon but don't have to do it right now. So my question is regarding the pads, are there specific brands and compound type that will give better brake feel/performance ?
--Bill
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