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Thread: problem wityh brake piston? Series 3

  1. 4th October 2005, 06:58 AM #1
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    problem wityh brake piston? Series 3

    Ok, i'm having trouble with brakes at the moment. The whole system is adjusted and bled, however the front RH wheel seems to be braking far stronger, to the point of locking when coming to a slow stop on gravel.

    I'm not really sure what is causing the problem, but I suspect it's a piston. is there any tests that I can do to isolate the problem ot to help diagnose the problem?
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  2. 4th October 2005, 08:21 AM #2
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    Did you bleed the brakes in the correct order?

    I don't know about series, but on my 110 the brakes were 2 circuit and if you didn't bleed in very specific order the brakes had problems.


    Cheers

    Simon.
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  3. 4th October 2005, 09:08 AM #3
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    I did bleed them in the correct order, but I did have trouble with that particular wheel, maybe that's where the problem lies!!!
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  4. 4th October 2005, 09:58 AM #4
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    Oh well, that's about the limit of my expertise. Don't go over-tightening that one bleed nipple and stripping it. Nothing quite so embarassing as having to get a new thread put in.


    Not that it ever happened to me. [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]

    Cheers

    Simon
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  5. 4th October 2005, 11:16 AM #5
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    Originally posted by Phoenix
    I did bleed them in the correct order, but I did have trouble with that particular wheel, maybe that's where the problem lies!!!
    I'd start by checking the flexible line to that wheel, you may find that it is breaking down and will allow the fluid through under pressure but when you lift your foot off the brake the fluid can't return fully, resulting in thast brake coming on harder and faster with the next application.

    Is the brake binding even slightly ?

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  6. 4th October 2005, 01:23 PM #6
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    You don't say whether you have had the brakes apart or not. If not, and possibly even if you have, the most common reason for this symptom is slight contamination of the linings with either brake fluid or oil.

    Otherwise my guess is a seized piston in the opposite side so it only has one shoe working. You can check this without any disassembly - back off the adjusters one at a time and check pedal movement - no increase in pedal movement means that piston is not moving.
    John

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  7. 4th October 2005, 01:51 PM #7
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    flexible line....

    gets my number 1 vote

    had the same problem on mine.....
    2007 Discovery 3 SE7 TDV6 2.7
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  8. 4th October 2005, 02:00 PM #8
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    Flexi Line might be the culprit as well, I removed a pile of fishing line that i'd picked up the other day from that side. Also some fresh brake fluid wouldn't go astray.

    How do you dispose of old brake fluid out of curiousity?
    1994 Discovery TDi
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    2010 Discovery 4 TDV6
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  9. 4th October 2005, 02:01 PM #9
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    Oh, and I haven't had the brakes apart either. I've had the pads off on the opposite end of the axle, but that's only because the wheel fell off ops:
    1994 Discovery TDi
    2004 Discovery 2 TD5
    2010 Discovery 4 TDV6
    1961, Series 2 Ambulance. 108-098 - Eden

    Registry of Ex Military Land Rovers Mem. 129
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  10. 7th October 2005, 07:49 PM #10
    Hellspawn Guest
    Originally posted by Phoenix

    How do you dispose of old brake fluid out of curiousity?
    I just put it in an old fluid container labelled "old brake fluid". Usually I wait until I take the used motor oil along to the local recyclables depot, I hand the "old brake fluid" container to the attendant. I have no idea what he does with it but I've done my bit for the environment. :wink:
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