Another Pug 306 Brake Problem....
Discussion
My wife has had the 306 HDi for 9 years and in that time I have constantly been returning to the rear calipers that seem to seize on a daily basis.
I've changed calipers, removed the sliders, I've tried copper slip, high melting grease, oil and light oil peetrating fluid. Currently, one side is fine and slided nicely on 10W/40.
The other side is on light penetrating oil (after trying oil) the caliper slided back and forth quite easily by hand without the pads in. The pads slide on the carrier, BUT when I try to use the brakes, it sticks, needs a gentle tap or lever with a screw driver to free it. On the road it seems like the wheel is locked. Frees off on the road eventually but by then the car has slowed down going down hill and the wheel is hot!
Trouble is the car doesn't need discs on the rear.
I've changed calipers, removed the sliders, I've tried copper slip, high melting grease, oil and light oil peetrating fluid. Currently, one side is fine and slided nicely on 10W/40.
The other side is on light penetrating oil (after trying oil) the caliper slided back and forth quite easily by hand without the pads in. The pads slide on the carrier, BUT when I try to use the brakes, it sticks, needs a gentle tap or lever with a screw driver to free it. On the road it seems like the wheel is locked. Frees off on the road eventually but by then the car has slowed down going down hill and the wheel is hot!
Trouble is the car doesn't need discs on the rear.
Are the pads moving freely in the carriers? When I had this problem on a Mondeo (which are notorious for rear brakes seizing up), the calipers were fine but I had to remove the pads from their carriers with a hammer!
Once the pads were out, I thoroughly wire brushed the carriers and filed the mating surfaces slightly smoother, and re-assembled it with a little copper slip on the edges and backs of the pads. No further problems in the final year I owned the car.
Once the pads were out, I thoroughly wire brushed the carriers and filed the mating surfaces slightly smoother, and re-assembled it with a little copper slip on the edges and backs of the pads. No further problems in the final year I owned the car.
Two idea`s?? (1) have a look at the brake pressure regulator (if fitted)it will be on the o/side of the rear subframe.Check that the lever moves by hand and is nice and "springy",not seized.(2)The rear flexible brake pipes can collapse inside,the brake fluid does not "return" causing the rear brakes to hold pressure and stay on.
To check this theory,when the rear brakes are hot and binding,undo a bleed nipple to see if that releases the brakes??.I`ve had this many times on the old 405`s but never a 306?In fact never had much trouble with these calipers which are the same as the old 205GTi,all simple stuff.As long as everything is free and put together correctly??
To check this theory,when the rear brakes are hot and binding,undo a bleed nipple to see if that releases the brakes??.I`ve had this many times on the old 405`s but never a 306?In fact never had much trouble with these calipers which are the same as the old 205GTi,all simple stuff.As long as everything is free and put together correctly??
Brake lube, didn't know about that, what is it actually though
Penetrating fluid was an experiment to clean out any crud TBH
The pads free enough in the carrier all cleaned up
Hadn't thought about the hoses crumbling internally
Don't think it could be a brake balance as one side is ok
Tend to think its the hose....
Cheers
Penetrating fluid was an experiment to clean out any crud TBH
The pads free enough in the carrier all cleaned up
Hadn't thought about the hoses crumbling internally
Don't think it could be a brake balance as one side is ok
Tend to think its the hose....
Cheers
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