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Hard brake pedal


 
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dickiem

from United Kingdom

Joined: 13 Oct 2009
Posts: 8
Location: Yorkshire,
United Kingdom

PostPosted: Sun Oct 18, 2009 6:11 pm Reply with quote

Hi,

I have a 1999 Peugeot Partner van with a brake problem.

Over the last couple of days I've noticed the brake pedal become hard on several occasions. First time I noticed was when I set off from cold to do a 3 point turn and the pedal felt hard. Second time, i'd coasted a short distance in neutral and when I applied the brakes the pedal was hard. Third time, I was braking from about 40mph coming to a junction and the pedal gradually became harder. Sudden braking gives a normal pedal and good stopping power. Pedal feels fine if the engine has been revving a bit but seems to go hard at nearer tick over RPM...any ideas?
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JonB

from United Kingdom

Joined: 09 Apr 2005
Posts: 590
Location: Cleveland,
United Kingdom
Thanked: 24 times

PostPosted: Sun Oct 18, 2009 6:14 pm Reply with quote

Not a pro but sounds a bit like the servo needs checking.
Reason being, if the engine is not running the pedal will go hard, when running the pedal gets softer. If that makes sense.
JonB
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dickiem

from United Kingdom

Joined: 13 Oct 2009
Posts: 8
Location: Yorkshire,
United Kingdom

PostPosted: Sun Oct 18, 2009 6:17 pm Reply with quote

That was a thought I had JonB but not sure where the servo is to check, last time I checked a servo the brake master cylinder was fixed to it but that doesn't seem to be the case on the van icon_redface.gif
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Burnerman

from United Kingdom

Joined: 07 Feb 2008
Posts: 11371
Location: Northumberland,
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PostPosted: Sun Oct 18, 2009 6:21 pm Reply with quote

The vacuum for the servo is provided by a pump driven from the nearside end of the camshaft...check for pipes split, missing etc. To check the servo - engine off, press the brake pedal a good few times - it will rise to the top. Keep pressure on the pedal then start up. The pedal should fall a bit if vacuum is being supplied to the servo. Cheers John
PS If this isn't a diesel vehicle, ignore the first bit! J icon_smile.gif
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dickiem

from United Kingdom

Joined: 13 Oct 2009
Posts: 8
Location: Yorkshire,
United Kingdom

PostPosted: Sun Oct 18, 2009 6:25 pm Reply with quote

Burnerman wrote:
PS If this isn't a diesel vehicle, ignore the first bit! J icon_smile.gif


It is a diesel John yes, I will check the pipes tomorrow. So where is the servo on these things...is the master cyliner not mounted to them nowadays?
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KingboyD

from United Kingdom

Joined: 02 Sep 2006
Posts: 411
Location: Cheshire,
United Kingdom
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PostPosted: Sun Oct 18, 2009 6:40 pm Reply with quote

Check the vac pump is sucking, if it isnt before you replace it check the oil feed to it, if its getting a good supply of oil then its prob new pump time.
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dickiem

from United Kingdom

Joined: 13 Oct 2009
Posts: 8
Location: Yorkshire,
United Kingdom

PostPosted: Sun Oct 18, 2009 6:48 pm Reply with quote

KingboyD wrote:
Check the vac pump is sucking, if it isnt before you replace it check the oil feed to it, if its getting a good supply of oil then its prob new pump time.


Thanks guys, will have a look tomorrow night...hope it's something simple...and cheap icon_biggrin.gif
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Burnerman

from United Kingdom

Joined: 07 Feb 2008
Posts: 11371
Location: Northumberland,
United Kingdom
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PostPosted: Sun Oct 18, 2009 7:27 pm Reply with quote

Aye, the master cylinder is bolted direct to the servo. Hopeless to get to though icon_confused.gif John icon_smile.gif
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