205 Diesel brake problem

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Clive
Posts: 1
Joined: 11 Sep 2002, 21:03

205 Diesel brake problem

Post by Clive » 11 Sep 2002, 21:18

Hi, I have a 1987 205 GRD that has developed a problem with the braking system, namely at low revs it seems that the servo vacuum pump is not working correctly as the brake pedal becomes very hard & doesn't travel as far as usual.I suspect that the vacuum pump is on its last legs but before I shell out for a new one I wondered if anyone had any other ideas as to another reson for this happening.
Many thanks
Clive

Dave Bamber
Posts: 627
Joined: 25 Feb 2001, 03:17

Post by Dave Bamber » 11 Sep 2002, 23:36

Had a similar problem on an old Lada years ago. Turned out to be the rubber pipe between the manifold and servo had collapsed, stopping the vacuum. Could be something like that. Or maybe it could be the one-way valve that connects the pipe to the servo. Worth checking before you lash out on a new pump.
Berlingo HDI Wicked<img src=icon_smile_evil.gif border=0 align=middle>Red

kevin
Posts: 129
Joined: 13 Aug 2002, 18:06

Post by kevin » 12 Sep 2002, 16:50

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Hi, I have a 1987 205 GRD that has developed a problem with the braking system, namely at low revs it seems that the servo vacuum pump is not working correctly as the brake pedal becomes very hard & doesn't travel as far as usual.I suspect that the vacuum pump is on its last legs but before I shell out for a new one I wondered if anyone had any other ideas as to another reson for this happening.
Many thanks
Clive

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kevin
Posts: 129
Joined: 13 Aug 2002, 18:06

Post by kevin » 12 Sep 2002, 16:58

I had similar problems with a 309 diesel, try looking at the condition of the drive belt for the vacuum pump and the hoses.
I eventually fitted jubillee clips to the hoses to ensure a tight fit to the pipes coming out of the top of the pump. There is a replacement diaphram available from the dealers, it is sometimes as cheap to fit a second hand unit as, in my case, the aluminium valve block at the top of the housing had broken.
Try the clips on the hoses and work from there.