Brakes on my F250

[Donald]

So I examined the caliper. At least the pins. Both moved in and out freely. No binding. Pulling them out, one was still lubricated and the other dry with a rust looking powder on it. Not rusty or pitted. Just a rust looking powder.

The kind of failure I had with one pad wearing down to nothing and the pad backing plate falling out while other pad does not look like it has much use typically comes from a problem with the caliper pins.

So still unanswered questions.

 

[Clarkbug]

Do they sell a narrow wire brush to get in-between stud and hub? Clean our any rust?

Lisle tools sells a brake brush for that purpose, or 3m sells a roloc disk.and tool meant to fit over a wheel stud to clean out that area with a drill or angle grinder.

Also, you could have had some rust jacking that held your outer pad in place and only allowed the inner pad to move and wear. Explains why your pins are free but your caliper became the wear surface...

 

[JohnnyG]

Wow that's the most extreme wear I've ever seen! Seriously happy that you got home safe. And mildly impressed with the Ford caliper for standing up to that.

You'll have to check out "Just rolled in" on Youtube. They have videos of brake discs worn through to the vent channels!
Makes you wonder in amazement!

 

[Donald]

Today I did the brakes on the other side (that had not failed). Both inner and outer pad had maybe 2/3 of original pad thickness. No real need to do them other than to do both sides at the same time and I had all the parts.

I am still not 100% clear on why the passenger side failed as they did. Neither caliper pin was seized but one was lubricated and the other dry. Looking back at my maintenance log an indie shop did them and replaced the caliper. Assume rebuilt caliper. Did the rebuilding process fail to properly lube one caliper pin?

Does anyone pull the pin out of a new or rebuilt caliper to double check it's properly lubricated?

 

[bdcardinal]

Caliper pistons falling apart isn't uncommon on Super Dutys. I am gathering parts for a brake job on my dually and I will absolutely check the lube on the pins when I do the job. Just trying to build motivation since the rear rotor replacement is so involved on a dually.

 

[Donald]

Caliper pistons falling apart isn't uncommon on Super Dutys. I am gathering parts for a brake job on my dually and I will absolutely check the lube on the pins when I do the job. Just trying to build motivation since the rear rotor replacement is so involved on a dually.

I have my tires rotated at a local indie shop. I will just ask him to check brake pads with each tire rotation.

Tires are heavy and I am 72. Cannot do all the things I could do at 25.