Driver front brake locking

Did you check the other side as well? Also, did you check the rears? That could cause a push to the front.

Roy

Did you bleed the system?

Is there an even flow with the bleeder open on both sides?

Roy

If all the brake system is working and the calipers are working and you have new pads and rotors as well, that leaves a possible suspension issue causing the pull.

Have you or anyone checked the suspension for something worn out or loose?

Roy

Hi there,

Thank you for the donation,

You will need to do a few tests first to try and diagnose why this is happening, first, go for a drive and get the brakes hot, try and get them to the point that they are dragging, as they will be very hot, take care as you will need to then crack the bleeder and see if it is residual brake line pressure holding on the brakes, if so you may have faulty front brake hoses as they can deteriorate internally and close off like a valve and retain pressure, this more so if excess pressure is uneven at the front brakes, if there is no excess pressure I would be having the calipers overhauled as they may be binging up, this is a fairly common problem.

Mark (mhpautos)

I would have it checked but I doubt it. I still think you have something in that wheel that is causing the caliper to lock up.

Roy

You are welcome.

Always glad to help.

Roy

Suspect a leaking wheel cylinder

Suspect a sticking parking brake cable. If no other brake work has been done when this problem started, try flexing the cable in the casing in front of the wheel. You can also try pulling down on the cable in front of the casing, then watching to see if it retracts by itself. If flexing the casing stops the problem, suspect a rusty cable. Over adjustment will do this too.

If the cable doesn't appear to be the cause, remove the brake drum and look at the shoes. Both of them must be against the large anchor pin on the top. If they are, look at the parking brake strut rod between the two shoes. You should be able to push it at least 1/16" to compress the anti-rattle spring. If either of these are not correct, they will cause grabbing brakes. The parking brake cable is still the likely cause, but grossly under-adjusted brakes can cause this condition too if the automatic adjuster cable is broken. You would also notice a lower than normal brake pedal.

Look for contamination from axle grease, and a disconnected or rusted link from the rear axle to the height-sensing proportioning valve.

If work was recently done to the brakes, suspect the wrong shoes in the wrong locations. The shoe towards the front of the truck must be a lot shorter than the one towards the rear.

If this only happens during the first stop of the day, especially on dirt roads, it could be normal rust buildup on the drums overnight from humidity in the air. Not much you can do about that.

Caradiodoc

Could be the brake hose collasped internally acting as a check valve won't hurt to investigate

Never saw this problem in 26 years working on cars, then saw it on two vehicles in two weeks. The first was one of my Caravans that sat outside all winter.

Look for a metal bracket attached to the center of the rubber brake hose. Rust builds up inside where it's crimped around the hose and pinches it off. Use a channel lock pliers to open the crimp just a little. You can prove this is the problem by opening the bleeder screw. There will be a tiny spurt of brake fluid and the caliper will release.

Caradiodoc