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+--- Thread: hard brake pedal (/showthread.php?tid=9287)
hard brake pedal - Just Sean - 27-12-2012
When I first start my car up the brake pedal is really hard but after a few minutes it how's back to normal...
Bit worrying and I'm not sure what the problem is. Car is really muddy ATM and has been stood in the rain over Xmas. Think might be something servo/mc related BT again I'm not sure...
RE: hard brake pedal - Just Sean - 28-12-2012
Any ideas?
hard brake pedal - Jonny b - 28-12-2012
Usually servo I think if its hard!
RE: hard brake pedal - Just Sean - 28-12-2012
Is the servo at the bottom of the engine bay?
RE: hard brake pedal - Ruan - 28-12-2012
Either vacuum pump or servo...
Does it go hard once running and normal if you stamp on the brake pedal a few times?
RE: hard brake pedal - gareth7 - 13-01-2013
Check the condition of the 3" braided rubber hose that's between the vacuum pump and the servo Sean.....
I had a similar problem with mine and this was the issue. If it looks slightly flat in the middle change it.......mine looked like this after I cut the braiding back, two 30mm splits on opposite sides of the pipe. Any damage won't look obvious until you cut away the braiding.
![[Image: Christmas2012014.jpg]](http://i1091.photobucket.com/albums/i395/aztechdi/Christmas2012014.jpg)
RE: hard brake pedal - gareth7 - 25-01-2013
Turns out the split pipe ( although definitely not helping matters) wasn't the only problem.....
There's a one way valve that plugs into the servo that the vacuum line from the pump connects to........I'm 99% sure the original valve on mine was sometimes sticking so I changed it for a brand new one yesterday. You could feel it hesitate to open when blowing through it. The new one would open instantly. Finger's crossed this has finally sorted it out.
Part number for the valve is...
Bosch or Bendix servo 4599 15
Teves servo 4599 25
Bitch of a job to get your hand in there to do it when it's at the top of the servo on the left hand side underneath the MC!
Made a couple of phone calls to price a new servo up, just in case.....
My factors with trade discount £260+VAT
Peugeot dealer £76+VAT
WTF!!!!
RE: hard brake pedal - Matt - 25-01-2013
(28-12-2012, 11:56 AM)Ruan Wrote: Either vacuum pump or servo...
Does it go hard once running and normal if you stamp on the brake pedal a few times?
I'm always hard, until you stamp on it