brakes

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vvthredders
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brakes

Post by vvthredders »

please can someone explain why my rear brake calipers on a 1995 xantia vsxtd appear to have no power. i have bleed them but the fluid appears to be under no pressure at all
alexx
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Post by alexx »

Almost impossible, if rear wheels are on the ground and rear of the car on the correct height, because rear suspension is source of pressure for rear brake circuit.
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AndersDK
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Post by AndersDK »

To bleed rear brakes - simply have suspension set to highest height.
Dave Burns
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Post by Dave Burns »

If you have the back end jacked up and wheels off the ground with the ride height set to normal, there will be no pressure in the rear brake circuit, you must as Anders says have the suspension on the high setting if the rear wheels are off the ground.
The reason is as Alexx has said, rear brakes get their pressure feed from the rear suspension circuit, this enables the rear brakes to be load sensetive.
Dave
alexx
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Post by alexx »

Exactly. If you have the back end jacked up, rear suspension will fully extend (to rebound-stops). Height corrector will 'think' that the car is too high and release all the pressure from rear suspension, trying to lower the rear end to correct height.
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