2nd Gen Non-Engine/Transmission Brake Pull 2001 Dually

[DBardeen]

I have read numerous posts regarding brake pull on this and other sites, but have yet to discover a smoking gun as to the cause. I have replaced the calipers (loaded NAPA) twice, replaced rotors (NAPA), rear drums turned to insure they are concentric, rear shoes (NAPA), front brake hoses (Mopar) and rear wheel cylinders (NAPA GM 1-Ton), and the truck still pulls left. The problem seems to be temperature sensitive. The truck will stop straight when cold and after several braking attempts the pull returns. I thought the problem might be in the suspension as I've installed a new 2003 style track bar and DSS, but when one adds the temperature sensitivity back into the equation one must rule this out. I've even switched the front tires from side to side to make sure I didn't have a tire not to spec. (Really grasping). Truck has been aligned and tracks straight on all road surfaces until brakes are applied. Any ideas would be greatly appreciated. HELP!

 

[redram]

I have read numerous posts regarding brake pull on this and other sites, but have yet to discover a smoking gun as to the cause. I have replaced the calipers (loaded NAPA) twice, replaced rotors (NAPA), rear drums turned to insure they are concentric, rear shoes (NAPA), front brake hoses (Mopar) and rear wheel cylinders (NAPA GM 1-Ton), and the truck still pulls left. The problem seems to be temperature sensitive. The truck will stop straight when cold and after several braking attempts the pull returns. I thought the problem might be in the suspension as I've installed a new 2003 style track bar and DSS, but when one adds the temperature sensitivity back into the equation one must rule this out. I've even switched the front tires from side to side to make sure I didn't have a tire not to spec. (Really grasping). Truck has been aligned and tracks straight on all road surfaces until brakes are applied. Any ideas would be greatly appreciated. HELP!

Have you checked the brake lines (flex lines)?

Was it a four wheel alignment?

Brake proportioning valve?



wheel bearing tighter on one side?



Just grasping at straws... .

 

[DBardeen]

I did replace both rubber brake hoses and performed a 4 wheel alignment. Have not checked the brake proportioning valve. I kind of ruled that out as the problem is side to side versus front to rear. Am I missing something? Thought about the wheel bearing, but both sides spin freely, maybe one is going bad and worsens with temperature? Believe me I'm open to any ideas!

 

[redram]

If one caliper in the front is applying higher pressure or reacting faster - this would cause a pull and may only happen under hard braking (hot rotors).

I had a pull to the right due to a rear caliper reacting slowly.



No rear axle seal leaks causing a burnishing on one drum?



????