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Brake oddity
Posted: Sun Mar 27, 2005 11:14 pm
by Dion
My pressure switch for brakelights (on master cylinder) cracked and started leaking. Before this the brakes worked fine. I removed it and drilled and tapped it so I could plug it internally. After this I had the same problem I've heard here several times. Brakes go almost to floor. One pump and brakes were back. Let sit 2-3 min. First pump straight to the floor again. I bled them several times on level ground, bled master cylinder first of course and still had the same problem. I don't know why I tried this but I put SUZI on a steep downward incline and re-bled master cylinder. Now I have brakes from about 1/2" pedal travel and so far still do. I don't know if this helped or if this is a fluke. Just thought I'd pass this on. (Oh yeah, for brake lights I installed a normally closed switch under the steering placed so the brake pedal pressed the switch when pedal was released as soon as pedal is pressed bingo...Brake lights.) Let me know if you try the bleeding technique and have any success, or if it does nothing for you. The brake problem was driving me nuts and as far as I can tell. It's a very short drive.
Dion
Posted: Mon Mar 28, 2005 5:50 am
by Jimny
That is wild! I will try that if I run across that problem.
Posted: Mon Mar 28, 2005 10:35 am
by stevec
Wow, that's interesting...Did you just rebleed the master cylinder on the incline, or did you do the wheels too? Sounds like it could've been air up in the sending unit. How steep was the incline? Sounds like one could jack up the back end in the garage and do it.
Posted: Mon Mar 28, 2005 3:40 pm
by Smuz
Yeah, interesting. I'm gonna try that as soon as I get Wilson in the shop.
brake bleed
Posted: Mon Mar 28, 2005 11:06 pm
by Dion
It was about as steep as two sets of ramps (you know the cheepo's that you get at walmart) with the back tires up on the ramps. I just bled the master cylinder on the incline, the brakes worked all day today. No problems.
Dion
Posted: Sun May 01, 2005 4:54 pm
by Trev Aus
I've done the same when bleeding troublesome single circuit brakes it can help get the trapped air up to the bleed nipple you can also clamp off the rear brake hose with a clamp & bleed the front then take the clamp off & bleed the rear.
My mate uses 2 clamps so your only bleeding one wheel at a time, this is mainly when you've lost all the fluid.
I made a tyre valve in an old master cylinder cap, put a hand push bike pump on & give 3 pumps, then just go to each wheel & the air pours out, just keep the fluid up to it.
Trev
Aus