F250 pulls left when braking...just a bit - Ford Powerstroke Diesel Forum
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Old 10-16-2013, 02:16 PM
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F250 pulls left when braking...just a bit

Now, there's more to this story but I'll give the basics:
08 f250 CC 6.4. 50k miles, assuming all OEM brakes. New wheels/tires but tires done twice due to a separate issue. Braking issue is still there, exactly the same. Lets rule out wheels/tires.

Now normally, IMO, when braking and you get a pull to the left, the right caliper is dragging at some point, be it pins or caliper.

Here's the main detail. This started after the LEFT front caliper hung up on me. It only did it once and for about a mile and released after a stop. It got hot and I smelled and felt the pull as I was driving. Full stop and it went away, never happened again.

100% certain it was the left caliper.

Pads are visibly worn to my eye without removing the wheel and inspecting. I was going to just do new rotors and pads but it got me thinking, why would it pull left after this event?

I should add, this is not noticeable until speeds above 50 mph.
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Old 10-17-2013, 07:24 AM
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Hmm.

Maybe, what's the best choice for pads/rotors? Autozone is the same price for standard rotors/pads as online for slotted/dimpled with pads.
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Old 10-29-2013, 06:34 AM
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no ideas here?
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Old 10-29-2013, 07:00 AM
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did you pull the wheels and check the calipers/grease the pins/lube the pads?

The idea is you self diag-ed that you have a stuck caliper, which is probably why no one responded.
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Old 10-29-2013, 07:04 AM
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I have not pulled it, my wheel lock was misplaced until recently. I guess it could be a partially/sticking pin. It just doesn't create heat or anymore brake dust than the left.

I just found it odd the left hung briefly and it pulls to the right at high speed braking.
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Old 10-29-2013, 07:23 AM
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I hear ya, and I'd think it was odd too but I'd also pull down and service all 4 corners before it locked for good.

You could have a piston issue on the left and a slide hanging on the right... there is no telling.
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Old 10-29-2013, 12:30 PM
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Dragging pins usually cause pull issues, also look for non smooth parts on the inside side of the rotor ...another sign of sticking pins...sounds like they need new pins/grease (good grease) and I would also bleed the whole brake system and replace with new fluid...old rubber/dirt in the fluid can damage the caliper and make it stick...and overheated fluid from stuck brakes should be changed out anyway...
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Old 10-30-2013, 08:31 AM
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Put the front end in the air and here's what I found.

1. right side has more drag on the wheel when spinning when compared to left. I could get a revolution out of both but the drivers(left) was a bit easier. I do run 35's on 20's.

2. Pulled right(pass) wheel. Pulled pin bolt and the pin is smooth as can be. in and out. No resistance at all. It moved freely with the rubber plunger.

3. Pads looked thick.

4. Rotors looked smooth and rotated smoothly.

I did see something, as the axle enters at the spindle/tube entrance area, there is a large o-ring that is just floating there. Dry all around.
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Old 10-30-2013, 09:30 AM
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O-ring is just a axle dust seal, no big deal, you might have a wheel bearing or hub issue ...and U-joints can bind and cause all sorts of funky steering drags and pulls...

Last edited by rt_hawk; 10-30-2013 at 09:31 AM. Reason: Stupid auto correct
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Old 10-30-2013, 09:36 AM
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It looked like a dust seal but I haven't had one of these apart so I didn't know for sure.

I'd like to fix the issue with the pulling but TBH, it doesn't do it driving around town, it only occurs/noticeable when over, say 60mph and you get on the brakes. Truck drives smooth and straight at 40 or 90 mph.
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