Increased pedal travel after new calliper but no air?
Discussion
Good evening gents,
Today I replaced the front nearside brake calliper on my Mk1 Focus TDDI as the piston had seized (rubber boot had been punctured at some point and allowed the piston to corrode).
The job went well as did the fitting of a new axle set of brake pads.
However I now have an interesting problem which, I suppose, may go away as the new pads bed in but I am not so sure. The fault is that with normal driving, the pedal appears to have a significantly greater amount of pedal travel than it did previously. Braking performance is as it should be and the car pulls up straight, but the pedal's position for when it is firm and acting the brakes also seems to vary depending on how quickly it is pressed. If the handbrake is applied, the pedal is firm near the top of its travel as would be normally expected. No pedal sinking can be experienced once pressed and held. It can be pumped up a little when there is large travel but not much.
I did fully (I think) bleed the corner which had a new calliper fitted and to the point of no further air appeared to come out. Is there anything special or unusual about these cars to which I should be made aware of when it comes to its braking system? Or has the sticking calliper somehow masked another problem in the braking system with such as with the rear brakes?
In the morning I will give the corner with the new brake calliper another round of bleeding to see if there is air still trapped in the mean time, but should this fail I would value your ideas.
Regards,
Today I replaced the front nearside brake calliper on my Mk1 Focus TDDI as the piston had seized (rubber boot had been punctured at some point and allowed the piston to corrode).
The job went well as did the fitting of a new axle set of brake pads.
However I now have an interesting problem which, I suppose, may go away as the new pads bed in but I am not so sure. The fault is that with normal driving, the pedal appears to have a significantly greater amount of pedal travel than it did previously. Braking performance is as it should be and the car pulls up straight, but the pedal's position for when it is firm and acting the brakes also seems to vary depending on how quickly it is pressed. If the handbrake is applied, the pedal is firm near the top of its travel as would be normally expected. No pedal sinking can be experienced once pressed and held. It can be pumped up a little when there is large travel but not much.
I did fully (I think) bleed the corner which had a new calliper fitted and to the point of no further air appeared to come out. Is there anything special or unusual about these cars to which I should be made aware of when it comes to its braking system? Or has the sticking calliper somehow masked another problem in the braking system with such as with the rear brakes?
In the morning I will give the corner with the new brake calliper another round of bleeding to see if there is air still trapped in the mean time, but should this fail I would value your ideas.
Regards,
I'd make sure the rear shoes are adjusted properly then let the pads bed in and see what it's like,i "think" your probably onto something with the seized caliper masking a rear shoe adjustmant issue, i see a lot of cars where the rear shoe adjustment fails to keep up with the wear, it's the main reason manufacturers went to calipers at the rear (bringing with them thier own issues of rusting calipers).
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