Pull to left when brake hard (1 Viewer)

[keithianminton]

Just had both knuckles rebuilt, new brake pads and rotors, new tie rod ends, and alignment. Tracks straight but when I brake hard I get major pull to left...had problem awhile back seemed to fix self then started pulling to right...now after work back to pulling left...do I need to bleed the brake lines...thoughts...

 

[DougAustinTx]

Even after all the new parts, first check for fluid leaks on the inside of all 4 tires. If leaking, you'll see streaks radiating outward. If no leaks, I would consider replacing the brake hoses. They can be blocked internally, and even worse, they can create a one way valve that holds pressure on a caliper even after you let your foot off the brake. Other possibility is sticking caliper pistons. I have had someone stand beside the roadway as I drove by and hit the brakes pretty hard. The observer can tell you which wheels locked up, and which ones didn't. Sometimes it's a matter of eliminating the possibilities. If it's your rear brakes acting up, make sure they are both adjusted equally with a slight drag with no pressure on the brake pedal (and the hoses back there may be the culprit). Good Luck
Doug

 

[Engineer8000]

New pads require the caliper pistons to be pushed in, they can become stuck there and not work.

 

[GatorPlater]

Hey Keith
What year is your truck? Stock Disk up front or conversion front and back?
If conversion, what master cylinder, calipers, etc.?
If conversion, did you do it or a shop? (I would guess shop since you said 'i just had done')

 

[keithianminton]

Hey Keith
What year is your truck? Stock Disk up front or conversion front and back?
If conversion, what master cylinder, calipers, etc.?
If conversion, did you do it or a shop? (I would guess shop since you said 'i just had done')

1978, stock front disc and rear drum.

 

[GatorPlater]

Alright, I would start with a full bleed all the way around, new fluid and then do a recheck for pulling.

 

[franklin40]

i’m guessing a piston in the right caliper is stuck and won’t cause enough brake power on that side. i agree though with above posts that when it’s a brake issue it’s worth going through the whole system to make sure it’s working. bleed with new fluid, check pads once you’ve checked the pistons. i had that happen to me so put new callipers up front and it fixed the pull. also if you have pulsing brakes it’s a good time to get the rotors turned but that means pulling the hubs apart.