Dragging rear brake question
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Dragging rear brake question
I noticed the other day the right rear brakes are dragging some on my 2002 F350 (srw) what is the most likely point of failure, the caliper or the hose? I just don't want to waste money on a caliper when all I need is the hose.
Thanks, Paul
Thanks, Paul
Fleet Mechanic
Joined: Nov 2011
Posts: 1,825
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From: Land of Taxes
Could be either of the above failed or the slider pins have frozen up. Does an 02 have discs in the rear? Not being a wise guy, I dont know where the break is from drums to discs.
If the hose is bad it will release the dragging brake after it sits. A frozen caliper piston or slider pins will keep the brakes applied to some extent. Take it apart and inspect. What does the rotor look like on both sides. Inner pad excessively worn when the outer looks good? You should feel the pins when disassembling the caliper off its mount. With he caliper off and supported (dont let it hang by the hose), push the brake pedal once or twice at most to see if the piston moves out of the caliper(careful to not pop out the piston)? Or compress it with a large pair of channel locks or C clamp or the compression tool. If its real hard or doesn't move theres the problem.
FYI brake fluid should be bleed as part of periodic service. Every 50-75-100Kmax. Hoses should be replaced every so often as well. This is determined by age or by mileage. OEM hoses are cheap insurance.
If the hose is bad it will release the dragging brake after it sits. A frozen caliper piston or slider pins will keep the brakes applied to some extent. Take it apart and inspect. What does the rotor look like on both sides. Inner pad excessively worn when the outer looks good? You should feel the pins when disassembling the caliper off its mount. With he caliper off and supported (dont let it hang by the hose), push the brake pedal once or twice at most to see if the piston moves out of the caliper(careful to not pop out the piston)? Or compress it with a large pair of channel locks or C clamp or the compression tool. If its real hard or doesn't move theres the problem.
FYI brake fluid should be bleed as part of periodic service. Every 50-75-100Kmax. Hoses should be replaced every so often as well. This is determined by age or by mileage. OEM hoses are cheap insurance.
Senior User
Joined: Jun 2015
Posts: 230
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From: elkmont alabama
odds are it is the slide pins on my last f250 someone did not grease the pins and they froze and kept the caliper stuck on the rotor and I didn't catch it till I lost my rear rotor and that truck was a 2000 and my pins broke and I had to replace the bracket and pins. pins are not expensive but the bracket was hard to find
Senior User
Joined: Oct 2015
Posts: 441
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From: CDA, ID.
my bets the caliper. i had this issue couple months ago, it wasnt the slide pins for me the actual caliper pistons were rusted into place.
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Senior User
Joined: Jun 2015
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From: elkmont alabama
I guess it is all going to depend on your area of the states more up north you might have more problems with the calipers and the pistions rusting in place and more south you might have more problems with the slide pins and people forgetting to grease them but its all going to have different factors in play
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Fleet Mechanic
Joined: Feb 2004
Posts: 1,902
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From: Northern IL
Ya my driver side rear caliper kept on sticking, I took it apart re-greased the slide pins and a few months later did again. I than replaced the caliper and all is well.
Mine froze due to corrosion, also it would be a great time to flush the old brake fluid.
...Gage
Mine froze due to corrosion, also it would be a great time to flush the old brake fluid.
...Gage
Lead Driver
Joined: Jul 2004
Posts: 5,946
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From: in the woods of MA
Yeah, up north here it seems a 2-4 years is about average for replacing calipers. Mileage doesn't matter as much, usage will, especially for work trucks, 2x especially for plow trucks.
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