Dispatch Brakes (Hard pedal)

[njl555]

Hi all Newbie here

I have a 2003 dispatch 2.0 hdi, driving home today the brake pedal has gone very hard and can only just stop the van.

Feels like there is no servo asisstance?

Pulled off the pipe to the vaccum pump and the pump is sucking i would off though it would of come off with a phsssss sound but nothing?

The brake fluid level is ok and checked all the other vaccum pipes for splits, and the large one to the servo, all ok.

Anyone had this problem before?

Many thanks Neil

[wright]

sounds like a vacum pump to me, see if it is sucking with engine running

[njl555]

Hi
Yes the vaccum pump is sucking with engine running i can feel it on my finger.

[wright]

make sure the pipe is not blocked or damaged, is there a valve on the pipe is it doing its job? it is possible that the pump is not pumping enough

[njl555]

Have removed the vaccum pipe from pump to servo and sucked and blown down it and the return valve is working ok.
How much suck should the pump have, it sucks on my finger and can pull it off again?
Cheers Neil

[njl555]

Hi all
Vaccum pump ok, valve ok.
In the process of changing servo unit, have removed the master cylinder, removed left engine mount and dropped down engine to access brake bar and undone. Unbolted 4 nutson servo plate holding it on and undone brake bar at right hand side, can pull servo forward but cannot disengage link from servo as i am doing it from feel as no room, there is a pin holding it in with a clip does anyone know how to remove clip and pin as i am stuck.
Any advise would be ace.
Cheers Neil

[Lulu76]

Hi I have to change the servo on my 2005 dispatch!
I know this was few years ago this thread was created I’m hoping you can tell me how you managed to change the servo and the procedure thank you