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Old 04-11-10, 16:06
FarCanal's Avatar
FarCanal FarCanal is offline
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Default Brake load sensing valve seized?

Brake load sensing valve/Brake pressure regulator has seized, so I have 'little or no effort' on the rear nearside and offside brakes.

I've drowned it in WD40 and belted it with various blunt instruments but can't seem to get it shifting, any 'tips of the trade' or have I got to shell out 70 for a new one?

J.
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  #2  
Old 06-11-10, 17:21
simon.athey simon.athey is offline
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Default Re: Brake load sensing valve seized?

im having same problem any ideas, did you get it free'd up?
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  #3  
Old 06-11-10, 17:53
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go-ferret go-ferret is offline
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Default Re: Brake load sensing valve seized?

I just failed the MOT on this very thing causing little effort on the rear brakes...(after advisories every year for the last 5)...bit the bullet and had the job done...so worth it.

63 odd quid plus vat from gsf. 90 quid labour at a "good but not very cheap" garage.

amazing difference to how the van stops now though...i didn't realise that the brakes could be as good as they are now.

wouldn't want to play around with the valve too much though...it's a safety critical part and could be the cause of the rear overtaking the front if it's done badly.

Relish my uno !!!!!
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  #4  
Old 08-11-10, 13:17
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FarCanal FarCanal is offline
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Default Re: Brake load sensing valve seized?

I bought a replacement from GSF got it home and compared it with the one that was 'seized' and it has exactly the same travel on the 'pivot' so I've greased it up and bled the rear brakes (A big air lock came out) so I'm hoping it's freed itself up with all the bashing I gave it.

Re-test tomorrow so we'll see! if it still fails I'll be off to get it done at a garage!

J.
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Old 08-11-10, 13:20
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AndyMo AndyMo is offline
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Default Re: Brake load sensing valve seized?

where is the valve located you got any pictures my rear brakes have seemed to stop working i assume i have the same problem....
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  #6  
Old 08-11-10, 17:06
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FarCanal FarCanal is offline
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Default Re: Brake load sensing valve seized?

I'll try and get some in the light tomorrow...

Just reversed at speed (cul-de-sac, no traffic or pedestrians *pc correct disclaimer*) and slammed the anchors on and the back dipped sharply so I'm thinking the back brakes are definately working.. we'll see tomorrow.

J.
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  #7  
Old 08-11-10, 17:08
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FarCanal FarCanal is offline
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Default Re: Brake load sensing valve seized?

it's right smack in the middle of the rear 'arms' with a T-peice going out to springs that are attached to the bottom of the arms (if that makes sense?)
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  #8  
Old 09-11-10, 00:33
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AndyMo AndyMo is offline
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Default Re: Brake load sensing valve seized?

I know exactly what your on about never looked at it closely I always thought it was a handbreak cable.... I'll have a look at mine when the weather drys up a little
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  #9  
Old 09-11-10, 06:35
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FarCanal FarCanal is offline
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Default Re: Brake load sensing valve seized?

The handbrake cable is just in front of it..
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  #10  
Old 09-11-10, 10:07
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FarCanal FarCanal is offline
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Default Re: Brake load sensing valve seized?

It passed! Apparently it only has to move very slightly, I now have full brakes on the rear.
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