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pulling to the right

Bbs383ci

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my blazer pulls to the right when braking. Harder you brake the worse it pulls.

what could cause this?
 
If the steering wheel doesn't jerk to right, it will the rear brakes.
Right rear working better than left.
Could be adjustment, or oil seal failure and saturated linings.
Air pressure in tires can can have some influence as well.
 
A rubber brake hose can fail internally and restrict the flow of fluid to that brake caliper or wheel cylinder also,so if the left front one was not letting equal pressure be applied,then the right front wheel will have more braking power and make it pull to that side--a caliper piston seizing up or the caliper failing to slide properly on its mounting bolts can do this too..

If the front end alignment is off,it could only show up while braking too.

I had a puzzling pulling to one side issue on a '79 C10 I had--I replaced the hoses,pads,and it still pulled to one side while braking..
I then decided to replace the calipers,and I found out there are two different ones depending on the GVW ,one has a bigger piston,but still took the same pads as the smaller version,and will bolt up the same..the truck had one of each on it,someone must have swapped on a used one ,possibly off a C20 ,and being mis-matched,it caused the truck to pull when I applied the brakes..
 
If it pulls right under braking it can be the left front brake not doing it's job either. Caliper could be stuck or the piston is stuck in the bore.

On the front the brake pull is going to follow the brake that works.

Can be rear too like what was said above, but don't overlook the front.
 
Thanks for the replies and video!!!!

once i get off this shutdown ill do some more inspecting on the braking system.
 
my blazer pulls to the right when braking. Harder you brake the worse it pulls.

what could cause this?
The steering setup causes this. As the springs compress, they push the steering right.
Go to 3:20 in the video
I am wondering if front gas shocks help? I have that problem on my 78 Blazer. I am currently running Rancho adjustable front shocks on hard setting. What do you think?
 

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