Brakes - severe scoring on *one* rotor... - Ranger-Forums - The Ultimate Ford Ranger Resource

Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

LinkBack Thread Tools Search this Thread
Old 07-05-2014
Thread Starter
Join Date: Jun 2014
Location: Oklahoma City, OK
Posts: 6
Brakes - severe scoring on *one* rotor...


I've been investigating complaints from my son about some slight "pulsing" in the brakes in our 08 Ranger, which made me suspect the rotors. While I drove the truck myself and couldn't quite sense the "pulsing" to be as severe as my son suggested, a visual inspection of the rotors indicated the driver-side rotor to be rather significantly scored - easily sensed with the "back of the fingernail" trick. Not just a single score, but several "ridges," almost as if a prior pad replacement went too long and the brads in the backing material came in contact with the rotor surface. In contrast, the passenger side rotor was smooth.

Given the one rotor appears to me to be toast, and we don't have any other service history for the vehicle (used/new-to-us), I think I'm just going to go ahead and replace the pads, rotors, and bearings across the front.

Does the obviously dissimilar rotor wear suggest anything else worth considering other than the pad going too far? And does the path of replacement as I described seem reasonable? Truck has 73K miles on it, and 3K of those are ours.

Reply With Quote
Old 07-06-2014
pearlkid9988's Avatar
Join Date: Dec 2008
Location: Newnan Georgia
Posts: 828
Could be a bad pad depends on how much the previous owner rode the brakes my stock pads lasted 90k and had decent life left in them when i changed them out but its all about the driver. Also its pretty open in there i got some fine road gravel up in mine and it cut groves in the rotor like what your describing so that may be the issue for you.
Reply With Quote
Old 07-16-2014
Thread Starter
Join Date: Jun 2014
Location: Oklahoma City, OK
Posts: 6
Thought I'd update this thread just for information's sake.

Went ahead and replaced both front rotors and all the pads. Turns out the inside face of the passenger side was just as scored as the outside of the driver's side. The pads, although fairly new, had already taken on the scoring from the rotor, so its hard to know if the previous driver let pads go too far and score the rotor, replaced the pads, then let the scored rotor scar the pads, or what.

To be sure, the left-front wheel had been worked on before - it didn't have the same axle/bearing packing grease as the right-front wheel.

Anyway, I put in the new rotors and pads, and after having driven it quite a bit over the last few days I think the pulsing is gone. Think we're in good shape!
Reply With Quote
Old 07-17-2014
Jrevans2002's Avatar
Join Date: Apr 2008
Location: Chicago, Ill
Posts: 560
I'd replace the glide pins and rubber bushing then grease them. The caliper is not squeezing on both sides of the rotor like it should.The lower glide pin has a small sleeve that fits over the pin near the end that goes into the caliper bracket. It brakes down or swells to a point that it wont let the caliper close evenly so the in side pad does all the work. Don't use a syntheti lube, someone posted his findings that the synthetic lube cause the sleeve to swell. You can't get these things just about anywhere. Some say they change them every time they do the brakes, I just did mine last year at 47,000 miles and lube them every time I rotate the tires. GM has the same set up and I found a "Service Bulliten" on it about the problems they cause if not greased often.
Attached Thumbnails
Brakes - severe scoring on *one* rotor...-getimage.php.jpeg   Brakes - severe scoring on *one* rotor...-getimage-1.php.jpeg   Brakes - severe scoring on *one* rotor...-unknown.jpeg  

Last edited by Jrevans2002; 07-18-2014 at 08:06 AM.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Brakes! Rotor and pad questions! Redrider11 General Technical & Electrical 13 02-15-2012 09:23 PM
Expo 8.8 can't get one rotor off. nickskates4lyfe Drivetrain Tech 7 10-15-2011 12:12 AM
Replaced Rotor, One Problem bmx4life General Technical & Electrical 3 08-09-2008 11:26 AM
New Rotor and brakes tideguyinva Suspension Tech 2 08-02-2008 08:13 PM
Severe Off-Road Vehicle? l2en General Ford Ranger Discussion 5 06-16-2006 12:11 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -6. The time now is 11:09 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.