Help...no brakes!! - Renault Forums :: Independent Renault forum

Brakes/Hubs Brakes, Hubs, and etc

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post #1 of 6 (permalink) Old 10th September 2016 Thread Starter
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Help...no brakes!!

I was happily driving along yesterday in our old 1990 Renault Trafic T1100D camper & noticed the brake pedal seemed to have more travel than usual before the brakes started working & then it seemed to be going right to the floor & altho' the brakes still came on, I needed to use the handbrake too!! No warning light came on. Fortunately it happened near home. I assumed there was a leak somewhere but couldn't see one & the fluid level in the master cylinder seems fine. I'm thinking its either the servo or some sort of internal leak in the master cylinder...can anyone suggest checks I can do to find out what's causing this? If its the master cylinder, has anyone used this kit...
Renault Trafi | eBay ... 485ff8a512
to replace the seals etc...
thnx for any tips on this...
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post #2 of 6 (permalink) Old 10th September 2016
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Re: Help...no brakes!!

A servo fault would generally stiffen the brakes, hard pedal but little effect.

Do the brakes stiffen up if the pedal is pumped?
If so I'd be suspicious of a minor leak but one has let air in the system.

If just low on power, long on travel, could be master cylinder or a stuck shoe/pad or adjustment.

Can't discount master cylinder but first the system needs a good looking at
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post #3 of 6 (permalink) Old 10th September 2016
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Re: Help...no brakes!!

hi


personally I don't like to advise re brakes, as due to the safety element and not actually seeing the vehicle for my self.


I would suspect the master cylinder but would give the whole system a good wheel off inspection too.


If your mechanical knowledge and expertise is not up to this, for the safety of yourself and others get it looked at by a garage.


Al
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post #4 of 6 (permalink) Old 11th September 2016 Thread Starter
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Re: Help...no brakes!!

thnx for the tips etc...I did these checks on the servo...
BRAKE BOOSTER OPERATION TEST WITHOUT A TESTER

and all seemed fine...but the weird thing is that the brakes are back to normal now!!...I'll give the wheel cylinders, shoes, calipers & pads a good look over this week & hopefully renew the brake fluid too
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Last edited by Marcas; 11th September 2016 at 10:20 PM.
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post #5 of 6 (permalink) Old 11th September 2016
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Re: Help...no brakes!!

Would deffo recommend brake fluid change, it sounds like your brake fluid is failing, and when getting the brakes hot the fluid is not working,,.
Old fluid = water, anything over 5% water, then give your symptoms
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