Brakes sticking on intermittently?

[The motor guy]

So I installed a new seal.kit in tbe hydro boost a few months back. Then a few days ago I had a new steering box and power steering pump installed. After that its like the brakes are slow to release. Wasnt this bad before the steering box and power steering pump.was replaced. Looking at the brake pedal it seems to release normally. Ive heard the brake line hoses can swell and shrink causing the fluid to return back slowly? Is this true?

 

[HemiBenny]

Yes, the rubber lines can appear perfectly fine, but may have internal damage, restricting the flow back once the brakes are released.

Jack it up and have someone press and release the brakes, then try to turn each wheel to see which one is sticking. Remove the wheel, then have them press and release the brake. As soon as they release the brake, crack open the bleeder to see if it shoots brake fluid out with any force.

 

[The motor guy]

Yes, the rubber lines can appear perfectly fine, but may have internal damage, restricting the flow back once the brakes are released.

Jack it up and have someone press and release the brakes, then try to turn each wheel to see which one is sticking. Remove the wheel, then have them press and release the brake. As soon as they release the brake, crack open the bleeder to see if it shoots brake fluid out with any force.

I'll dont habe anyone to do that, but ill replace them since I bet they're original from 1999

 

[The_Jeff]

What's the last thing you messed with, the power steering, which is part of the hydro boost system. Look into that.

 

[HemiBenny]

I'll dont habe anyone to do that, but ill replace them since I bet they're original from 1999

I would have the shop that just replaced the power steering pump and steering box look into it if it started right after they did the work. They should warranty the work if it’s related.
If all of that checks out, figure out if it’s possibly a bad line or caliper.

 

[The motor guy]

I would have the shop that just replaced the power steering pump and steering box look into it if it started right after they did the work. They should warranty the work if it’s related.
If all of that checks out, figure out if it’s possibly a bad line or caliper.

I think its the drivers side rear brake shoe hanging up. Benefits of living on a gravel road. Tire locked right up tapping the brakes at about 8mph. Just went out for a late night snack and discovered this just now. Time to take it to another shop because the last one messed these drum brakes up. Or never fixed them should I say...That isnt the same shop that do the power steering and steering box replacement.

 

[The motor guy]

Okay. I drove my other dodge diesel today and the pedal retracts the same as the one that has the brakes dragging. Does that mean its probably more of a hardware issue? Like a stuck caliper or a hose? I guess it could all be that one brake shoe. Honestly, its only like less than 5mph that its an issue, and its not all the time..usually when first started and cold. You barely hit the pedal and it stops very easily. Once you get some speed its fine and the amount of pressure the pedal needs is perfectly normal

 

[Snagglefoot]

I’m wondering if is something with the hydroboost system you rebuilt with the seals. If you’re stumped you can always buy a new hydroboost. I’m also wondering about the accumulator on the hydroboost. Might it be causing the issue. Regarding changing the hoses, make sure when you start the hose connection into the port, that the hose is not constrained against any component in any manner. It will cause cross threading.

 

[Snagglefoot]

The way the accumulator works on a hydroboost is that is stores pressure in the event that one loses engine power and the power steering pump cannot provide pressure to the brake system. In that event the accumulator provides pressure for a “ Hail Mary” application of the brakes. Not sure how if it can accidentally apply pressure when the brakes are released.

 

[The motor guy]

The way the accumulator works on a hydroboost is that is stores pressure in the event that one loses engine power and the power steering pump cannot provide pressure to the brake system. In that event the accumulator provides pressure for a “ Hail Mary” application of the brakes. Not sure how if it can accidentally apply pressure when the brakes are released.

So the way to test that is see if you still have a soft pedal for a couple pumps with the engine off i guess

 

[The motor guy]

The way the accumulator works on a hydroboost is that is stores pressure in the event that one loses engine power and the power steering pump cannot provide pressure to the brake system. In that event the accumulator provides pressure for a “ Hail Mary” application of the brakes. Not sure how if it can accidentally apply pressure when the brakes are released.

What does that have to do with a sensitive brake pedal at less than 5mph?

 

[Snagglefoot]

I once did the rear brakes on a 93 Chevy. I replaced the brake shoes but reused the drums. Their curvature did not match and the shoe got jammed and locked the wheel on one side at low speed.

 

[Snagglefoot]

What does that have to do with a sensitive brake pedal at less than 5mph?

You’re probably dealing with a coincidence rather than a cause and effect situation.

 

[The motor guy]

You’re probably dealing with a coincidence rather than a cause and effect situation.

You mean like they decided to start hanging up the same time I had this work done? That would be the story of my life lol. I honestly dont see anything abnormal with the way the pedal retracts