long brake travel

ONE LIFE LIVE IT. D90 · Mar 14, 2010

Hi,
I seem to be having a bit of trouble with my 300tdi brakes. There seems to be an excesive amount of brake pedal travel compared to my mates 300tdi. Mine travels untill its about an inch of the floor. Ive recently replaced master cylinder, brake pipes and brake pads. And the system is definatley free of air because its been bled about 20 times. One thing i have noticed is the rear calipers only seem to be braking on half the disk on each side or even less than that. They are not using the full width of the disk and surface rust from not being used is still present even after a 20 mile run. Has any body got any ideas, im new to this landy stuff and im a bit puzzled on this one to be honest.

Thanks alot, josh.

Bobs110 · Mar 14, 2010

Hi, my 300tdi was the same for a long time, I eventually discovered that the pistons in the calipers were corroded and so not operating evenly, it is possible to replace just the pistons and seals and clean up the calipers but mine were so bad I decided to change all the calipers and pistons. It was expensive but I'm glad I did it now as the difference was amazing.

CROWBLIND · Mar 14, 2010

Hi
Souns like your pistons have partially siezed.
Not that expensive to do really, if you are a diy guy
http://www.beamends-lrspares.co.uk/...s/RearBrakes/RearDiscBrakesNon-ABS/index.html
Just clamp your rear flexi hose off when you remove your calipers to get pistons out, this will prevent fluid loss.

part number:STC1281

hope this helps

Atb
CB

ONE LIFE LIVE IT. D90 · Mar 15, 2010

Thanks alot guys.

But if my calipers were seized or partly seized, would that be why i have such long brake pedal travel. Or is that another problem?

CROWBLIND · Mar 15, 2010

This could be due to air in the system. Once you have changed the pistons and seals, bleed the system starting with the rear nearside then rear off, front near and finally front offside. Hopefully this should cure the problem.

landowner · Mar 15, 2010

Might be wise to check the brake servo, my 110 has long brake travel and I know the servo is on the way out so hoping that a servo change will sort it as I have tried everythin else as in new pads, shoes and front calipers.

Bobs110 · Mar 16, 2010

a warped disk could also give extra pedal travel

kernowdragon · Mar 16, 2010

Bobs110 said:
a warped disk could also give extra pedal travel

a warped disk also often gives pulsing through the pedal. If they're floating calipers (which I think they are on the rear of a 90) then they could be seized on their guide pins. A strip, clean and replace with a dolop of copperslip would cure that.

long brake travel

ONE LIFE LIVE IT. D90

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Bobs110

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CROWBLIND

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ONE LIFE LIVE IT. D90

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CROWBLIND

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landowner

Pensioner Pete

Bobs110

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kernowdragon

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