GEN 1 Both front calipers need replacing

[matrix243]

Wheel just won't spin freely. Doesn't drag real badly but, in neutral, started, spins about 1/4 rotation. Put a clamp on pads to pull in and spins. Checked bleeder and barely dribbles out so not line pressure problem. Guessing the piston just won't retract enough. Everything is clean. Slide pins are fine, regreased slider plates and cleaned/checked/greased piston seal.

Can't believe they could fail after only 90k miles. Most of the trucks life has been street and sitting. I've been off work sitting at home for 5 out of the 10 years of its life. I have a feeling all this salt thats used here is causing more problems then just rust. Not sure how it could get into a caliper though without fluid leaking.

 

[CoronaRaptor]

How do you know it's not the brake lines? Odd that both calipers are seizing at the same time, but it would be odd for both brake lines as well. Mine are still original after just over 150,000 miles, but I have S/S lines on mine. Have you ever flushed the brake system? I woud get new calipers, paint them pretty like and new brake lines, if problem persist ask @FordTechOne , lol.

 

[Nex]

Could have rust built up on the caliper piston causing it to stick on the seal while retracting into the caliper housing. Have you taken the calipers off and checked the wheel bearings?

 

[The Car Stereo Company]

i have been through 4 sets of calipers. not a big deal to change them

 

[CoronaRaptor]

i have been through 4 sets of calipers. not a big deal to change them

No weekend pics?

 

[The Car Stereo Company]

forgot. sorry. but i didnt burn through any rotors or calipers over this past weekend

 

[matrix243]

How do you know it's not the brake lines? Odd that both calipers are seizing at the same time, but it would be odd for both brake lines as well. Mine are still original after just over 150,000 miles, but I have S/S lines on mine. Have you ever flushed the brake system? I woud get new calipers, paint them pretty like and new brake lines, if problem persist ask @FordTechOne , lol.

True. Could use a flush I bet. The trick is if the bleeder doesn't trickle and some what shoots fluid meaning line pressure holding piston. Mine just trickles. Just seems odd there's nothing you can do except rebuild or replace.

 

[matrix243]

Could have rust built up on the caliper piston causing it to stick on the seal while retracting into the caliper housing. Have you taken the calipers off and checked the wheel bearings?

Took apart and cleaned multiple times. No rust and piston seals look good. I assume if the bore has rust/corrosion it would be leaking. Spins fine when pistons manually retracted.

 

[Nex]

Trickle down with someone holding the brake pedal down or no?

 

[matrix243]

Trickle down with someone holding the brake pedal down or no?

No pedal pressure. Follow this. Mine has exact same amount of rust