Technical Front brakes sticking on

[enery8]

I have had all new brakes fitted to the front axle. That is discs, calipers, flexible hoses and pads. Additionally, I had the servo reconditioned. First trip out there was a burning smell and within 13 miles the front brakes overheated and stuck on (eventually they released). I have had a few suggestions of what may have caused this but wonder if the members of the forum might have any ideas.

Thanks in advance for any info
Bill

 

[cris1117]

Hi Bill. Is it both sides sticking or just one side?

 

[enery8]

Hi Chris,
Yes it is both sides

 

[varesecrazy]

I have had all new brakes fitted to the front axle. That is discs, calipers, flexible hoses and pads. Additionally, I had the servo reconditioned. First trip out there was a burning smell and within 13 miles the front brakes overheated and stuck on (eventually they released). I have had a few suggestions of what may have caused this but wonder if the members of the forum might have any ideas.

Thanks in advance for any info
Bill

need more info..,

what kind of driving,
10 miles of moroway,
or up and down hills ?

so - it smelt HOT,
were BOTH sets of hubs equally HOT..??

I'd suspect a bleeding issue,
is it ABS equipped..??

 

[enery8]

Thanks for your answer and suggestion.
Driving on normal roads, town and bypass. Yes hills involved. Both hubs equally hot. ABS? daft as it may seem, don't know.
Thus far suggestions include, bleeding issue, servo to master cylinder adjustment and garage used old sliders in my new calipers. Incidentally, he hasn't looked at it yet!!.

 

[oigle]

There is a valve in the master cylinder that is supposed to hold a small amount of pressure in the lines to the wheel cylinders. If it is faulty, it could hold too much pressure and hold the brakes on lightly.

Ian

 

[CDK]

"Additionally, I had the servo reconditioned."

That could be it! If the servo keeps pressing against the plunger in the master cylinder, enough hydraulic pressure builds up to keep the front brake pads firmly against the discs.
To some mechanics "reconditioning" means taking something apart and putting it back together in a different order.

 

[varesecrazy]

Thanks for your answer and suggestion.
Driving on normal roads, town and bypass. Yes hills involved. Both hubs equally hot. ABS? daft as it may seem, don't know.
Thus far suggestions include, bleeding issue, servo to master cylinder adjustment and garage used old sliders in my new calipers. Incidentally, he hasn't looked at it yet!!.

has it been looked at yet..??

 

[enery8]

Went to the garage yesterday after getting advise servo repair people who suggested re-setting the servo to master cylinder connection. Garage removed master cylinder and found the push rod adjusted to be loose so tightened it and put some thread seal on it - so we shall see.
Also fitted my new air suspension - looking good.
Cheers all.

 

[enery8]

Finaly got this sorted. The refurbished servo had been adjusted wrong so was not allowing the fluid to drain back into the resurvior (sp) adjusted the length of the servo push rod and that seems to have fixed it. Advise from refurbisher is to fit the master cylinder so that when it is fitted there is no resistance to the push rod, but it must stay almost in contact with the master cylinder push road, a minimal gap. Hope this makes sense.