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Mustang Forums
2011-2014 Mustangs
Driveline/Suspension
Rear end pulls left under heavy braking
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<blockquote data-quote="JDos1" data-source="post: 15545277" data-attributes="member: 142262"><p>Caliper mount bracket is warped or you have a seized pin...or park brake cable is hanging up.</p><p></p><p>Jack the rear. Apply the parking brake and release it. After releasing, take a look at the park brake cable bracket on the caliper and ensure it is seating fully against the stop. If it is, move on to the caliper pins.</p><p></p><p>Use a 13mm to pull the caliper-to-bracket bolts off. These are 13mm. 15mm are the bracket-to-axle tube bolts, shouldn't need to remove these. Once you have those off, slide the caliper up off of the rotor. Pull out on the pins (which are what the bolts thread into. If you can't get them to pull out easily, you have a seized pin. Either drive the pin out (partially thread bolt back into it and use a slide hammer or pair of pliers to pull it out) or replace the caliper. If you pull the pins out you'll want to lightly sand them and repack the area with grease before reassembly.</p><p></p><p>The intermittent vibration doesn't really make any sense. Perhaps it is the warped rotor that makes contact, pushes the piston back into the caliper and then hydraulic pressure pushes the piston back out, making contact with the pad/rotor and recreating the vibration. Wild shot in the dark but all I can really think of with the symptoms you describe.</p><p></p><p>BMR LCA's. Contact Kelly or Dylan at BMR and ask if they still have the black bushings available. IIRC they are supposed to be more durable.</p></blockquote><p></p>
[QUOTE="JDos1, post: 15545277, member: 142262"] Caliper mount bracket is warped or you have a seized pin...or park brake cable is hanging up. Jack the rear. Apply the parking brake and release it. After releasing, take a look at the park brake cable bracket on the caliper and ensure it is seating fully against the stop. If it is, move on to the caliper pins. Use a 13mm to pull the caliper-to-bracket bolts off. These are 13mm. 15mm are the bracket-to-axle tube bolts, shouldn't need to remove these. Once you have those off, slide the caliper up off of the rotor. Pull out on the pins (which are what the bolts thread into. If you can't get them to pull out easily, you have a seized pin. Either drive the pin out (partially thread bolt back into it and use a slide hammer or pair of pliers to pull it out) or replace the caliper. If you pull the pins out you'll want to lightly sand them and repack the area with grease before reassembly. The intermittent vibration doesn't really make any sense. Perhaps it is the warped rotor that makes contact, pushes the piston back into the caliper and then hydraulic pressure pushes the piston back out, making contact with the pad/rotor and recreating the vibration. Wild shot in the dark but all I can really think of with the symptoms you describe. BMR LCA's. Contact Kelly or Dylan at BMR and ask if they still have the black bushings available. IIRC they are supposed to be more durable. [/QUOTE]
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2011-2014 Mustangs
Driveline/Suspension
Rear end pulls left under heavy braking
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