Car is a 1967 Pontiac Parisienne
Sometimes when I hit the brakes
It pulls to the left
Sometimes it does not
Is that a sticky wheel cylinder?
rabbit64cs said
May 14, 2015
Check the right..set them up a tad ..make sure everything moves nice and free.
MC said
May 14, 2015
I've had that happen due to a pinched/blocked brake hose in the past, so that might be another thing to look at.
4SPEED427 said
May 14, 2015
On my Acadian it was an adjustment issue, one side was not set tight enough like Rog described.
Lefty said
May 14, 2015
does one drum get hot after a 30 min drive ?
could be not releasing properly.
i would always do the "check the drum test" after car sitting for a few months
Indian said
May 14, 2015
It can be a bunch of different things, from wheel cylinder, master cylinder, main diverter. Self adjusting shoes can be adjusted without taking wheels off, reverse car in straight line then hard on brakes, it adjusts them. Having said that, if brakes are way out of adjustment they can occasionally lock up a wheel, too tight. I've had many master cylinders go, vehicle pull left or right. Wheel cylinders tend to simply blow apart leaking everywhere. Diverter will make you exit stage left or right too. Usually when a wheel cylinder blows, your brakes will spike hard when they are applied, if cylinder is weeping, you already know how bad that is. I would pull each wheel and examine things.
4SPEED427 said
May 14, 2015
When the drum is off, check to make sure the self adjuster is not seized up. You need to confirm that applying the brakes while backing up is ratcheting the adjuster.
Some great ideas here, you've got work to do!
eeluddy said
May 14, 2015
MC wrote:
I've had that happen due to a pinched/blocked brake hose in the past, so that might be another thing to look at.
Sometimes the front brake hoses get weak and balloon out. Also a cause. Check them well as a lot of times they dont get changed unless they are leaking.
SGS Welding said
May 14, 2015
Thanks for the replies
I installed new shoes 5000km ago
And double check the adjustment often
I pulled the drum and had my son apply the brakes repeatedly
Seamed like the wheel cylinder was lazy
But with no drum we worked the cylinder in and out a bunch of times
I will test drive and report back
I hope it's that simple
timbuk said
May 14, 2015
bleed the brakes does fluid come out the bleeder evenly? each side? those rubber hoses......
cdnpont said
May 14, 2015
Beyond mis-adjusted brakes...I'd say pooched strut rod bushings.
Next would be worn control arm bushings, tie rods, intermediate or Idler.
As we all know, steering geometry can radically change with the B under hard braking with combined worn components. Even new this car is mushy.
Reason why not all the time, depends on the road crown and braking pressure at the time of application.
rabbit64cs said
May 15, 2015
cdnpont wrote:
Beyond mis-adjusted brakes...I'd say pooched strut rod bushings.
Next would be worn control arm bushings, tie rods, intermediate or Idler.
As we all know, steering geometry can radically change with the B under hard braking with combined worn components. Even new this car is mushy.
Reason why not all the time, depends on the road crown and braking pressure at the time of application.
Exactly.. A lot of time s. A brake pull has nothing to do with the brakes...worn suspension.. A frame bushings ...etc..
I know my 64 currently pulls left...because of the left upper a frame bushings worn out...
SGS Welding said
May 19, 2015
That seems to have fixed it!
I have ordered new cylinders hoses and shoes.
I may not have to install them right away.
I've had that happen due to a pinched/blocked brake hose in the past, so that might be another thing to look at.
could be not releasing properly.
i would always do the "check the drum test" after car sitting for a few months
Some great ideas here, you've got work to do!
Sometimes the front brake hoses get weak and balloon out. Also a cause. Check them well as a lot of times they dont get changed unless they are leaking.
Beyond mis-adjusted brakes...I'd say pooched strut rod bushings.
Next would be worn control arm bushings, tie rods, intermediate or Idler.
As we all know, steering geometry can radically change with the B under hard braking with combined worn components. Even new this car is mushy.
Reason why not all the time, depends on the road crown and braking pressure at the time of application.
Exactly.. A lot of time s. A brake pull has nothing to do with the brakes...worn suspension.. A frame bushings ...etc..
I know my 64 currently pulls left...because of the left upper a frame bushings worn out...