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Soft Brakes 94 1500

dreamingmuscle

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2004GMC1500CC Enthusiast

2004GMC1500CC

Posted
Posted
Everything is good at the wheels to include the Dot 3. Slight pull to the left when braking.

 

 

If it's not at the wheels where else could the problem be.

 

Glen

If the lines are original I would highly suspect them.

dreamingmuscle Enthusiast

dreamingmuscle

Posted
  • Author
Posted
Everything is good at the wheels to include the Dot 3. Slight pull to the left when braking.

 

 

If it's not at the wheels where else could the problem be.

 

Glen

If the lines are original I would highly suspect them.

 

 

Front lines were changed maybe three years ago. Rear line just two weeks ago (brakes were soft before then).

 

I had a rust leak in the rear section of hard line and went ahead and replaced the rear line while I was there. Ran a quart of fluid through the lines before I was happy that all the air was out.

 

There is some light damp spots between the masters reservoir and the cylinder. Is that normal?

 

Glen

Nytemare Senior Enthusiast

Nytemare

Posted
Posted

Are you sure the new lines, now that they dont leak, arnt too much for the break cylinders out back. Pull off the rear drum and see if something is leaking inside.

 

My money is on the 14 year old master cylinder though.

dreamingmuscle Enthusiast

dreamingmuscle

Posted
  • Author
Posted
Are you sure the new lines, now that they don't leak, arnt too much for the break cylinders out back. Pull off the rear drum and see if something is leaking inside.

 

My money is on the 14 year old master cylinder though.

 

 

 

I'm sure the new lines are not leaking I'm kind of anal that way. I do need to check the rear pistons. Haven't checked them since I installed new shoes two years and 10k miles ago.

 

I'm leaning toward the master cylinder too.

 

Glen

Nytemare Senior Enthusiast

Nytemare

Posted
Posted

I didn't mean the new lines may be leaking, I was saying that now that they are not leaking your pushing more pressure to the rear breaks and maybe the seals cannot take it anymore.

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