I have had the following MOT failures;
1) Nearside front parking brake recording little or no effort
2) Front brakes imbalanced (39%)
After being assured by the garage that a new front passenger side caliper would sort out the problem I fitted one (bought from a scrapyard - it does work).
The old caliper was definitely jiggered it was a very stutturing movement to pull/push the two sides of the caliper apart/together when removed.
After fitting the caliper and bleeding the brakes i submitted the beast for a retest, failing again but ONLY the brake imbalance; handbrake is now fine.
Any ideas? I am sure the caliper is fine mechanically otherwise the handbrake would still not work.
Any ideas will be greatly appreciated!!
Brake imbalance Xantia 1995
Moderator: RichardW
- DickieG
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Check the inside surface of the discs as they suffer rusting far more than the outside. It'll be worth removing the pads and cleaning the surfaces where the pad touches the caliper and checking that the caliper slides easily across the disc. What side is under performing?
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If it's an ABS car, are the sensors all working correctly, or has the system been hoodwinked to cover a deficiency?
First thing I'd be doing, is bleeding it all again really thoroughly with the wheels on the ground.
As a side note, I renewed my front flexes last year as they seemed to be getting on a bit (1999 car). Yours might be further deteriorated, but I am yet to see an LHM flex hose form internal blockages like a DOT4 flex hose.
First thing I'd be doing, is bleeding it all again really thoroughly with the wheels on the ground.
As a side note, I renewed my front flexes last year as they seemed to be getting on a bit (1999 car). Yours might be further deteriorated, but I am yet to see an LHM flex hose form internal blockages like a DOT4 flex hose.
- DickieG
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Is that likely with the pressure that a Hydropneumatic Citroen produces in the braking system? I'd have thought that bleeding the system in a closed loop back to the reservoir with the nipples wide open would remove any air in a Xantia system. I've never heard of anyone coming across a problem with air pockets in a Xantia at the front, rear maybe but again using a closed loop sorts those out in my experience.handyman wrote:I would also suggest getting the brakes vacuum bleed as there is an air pocket that gets trapped in the calipers.
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Hi all, no-one has mentioned it yet but are the pads bedded into the discs, a few sessions of heavy braking should guarantee full contact between pad and disc, only if both sides have equal contact area and pressure will the brakes be balanced.
Derek B.
Derek B.
our car spent Friday afternoon and Monday morning in the electrics area of the Factory!!