Jump to content


Photo

300tdi braking problem


  • Please log in to reply
5 replies to this topic

#1 breezecloe

breezecloe

    Newbie

  • New Faces
  • Pip
  • 4 posts

Posted 30 June 2007 - 05:41 PM

Hi

When we apply the brakes on our discovery there is a loud hissing/whooshing type noise which sounds like its coming from the brake pedal itself. Also the brakes are not working very well now either. Does anyone have any ideas please? Im thinking servo, vacumn pump?

Thanks

#2 BogMonster

BogMonster

    Old Hand

  • Moderators
  • 11,863 posts
  • Location:Third rock from the Antarctic - 5141.8'S 5750.5'W

Posted 30 June 2007 - 07:17 PM

internal leak in the servo would be my guess if it only happens when you press the pedal down, if it is whooshing all the time it could be the pump
2002 Discovery II 4.0 V8 auto • 2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab

#3 breezecloe

breezecloe

    Newbie

  • New Faces
  • Pip
  • 4 posts

Posted 30 June 2007 - 11:28 PM

internal leak in the servo would be my guess if it only happens when you press the pedal down, if it is whooshing all the time it could be the pump






It only happens when you depress the pedal, how can i test for an internal leak? or should i just go and buy a new servo?

Thanks

#4 BogMonster

BogMonster

    Old Hand

  • Moderators
  • 11,863 posts
  • Location:Third rock from the Antarctic - 5141.8'S 5750.5'W

Posted 01 July 2007 - 02:09 PM

It only happens when you depress the pedal, how can i test for an internal leak? or should i just go and buy a new servo?

Thanks

The difference is if everything is ok it should be a gentle squish like a cowpat between your toes, if it sounds like you have just slashed a tyre it will mean there is a problem :)

The servos are sealed units I think, so there is not really any way of proving the cause of the problem without sawing a hole in it to see if the diaphragm is split, and after that you will need a new one anyway...
2002 Discovery II 4.0 V8 auto • 2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab

#5 JimAttrill

JimAttrill

    So important that they banned 50 000 IP addresses to shut me up

  • Settled In
  • PipPipPip
  • 2,908 posts
  • Location:S 2601.3' E02758.5 1373m Johannesburg, South Africa

Posted 01 July 2007 - 06:10 PM

Push on the pedal, start the engine. If pedal goes towards the floor, the servo is ok. If pedal stays where it is, it is stuffed.
1996 Defender 300Tdi 110 csw

#6 breezecloe

breezecloe

    Newbie

  • New Faces
  • Pip
  • 4 posts

Posted 01 July 2007 - 08:40 PM

The difference is if everything is ok it should be a gentle squish like a cowpat between your toes, if it sounds like you have just slashed a tyre it will mean there is a problem :)

The servos are sealed units I think, so there is not really any way of proving the cause of the problem without sawing a hole in it to see if the diaphragm is split, and after that you will need a new one anyway...



Thanks,will give a try.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users