Brakes keeps locking up after serviced

[Runner71]

Serviced the 11" front drum brakes. What did I do wrong? keeps locking up, should the front not have the auto adjustable cable?

 

[Don Frelier]

Those look correct.
Do you have any ridge on the inside edge of the drum where the shoes run?
If so take it off with a file or grinder.

 

[Runner71]

Those look correct.
Do you have any ridge on the inside edge of the drum where the shoes run?
If so take it off with a file or grinder.

Not that was grabbing my attention, cleaned it with brakecleaner and a wirebrush, did not swap the brakepads.. guess I just have to pull everything again. Serviced it all when Installed Aeroflow Line lock on the car - manual 4speed. All the brakelines and brakehoeses, new also. It worked great before I serviced it all, installed the line lock for easier burnouts on sticky tires.

 

[Sam69sat]

Did you lube the contact points where the brake shoes rub on the backing plates?

 

[pnora]

The green spring is in the wrong hole. When you say lock up what exactly do you mean? Skids or wont turn? Are you sure the rear are working?

 

[Runner71]

The green spring is in the wrong hole. When you say lock up what exactly do you mean? Skids or wont turn? Are you sure the rear are working?

Should the green spring be in the bigger hole underneith? They work flawless when I bleed and test brake with the wheels in the air, but when I go for a test drive it won't release after breaking.

 

[Runner71]

Did you lube the contact points where the brake shoes rub on the backing plates?

View attachment 1303534

Did not grease those spots, maybe I should?

 

[pnora]

Should the green spring be in the bigger hole underneith? They work flawless when I bleed and test brake with the wheels in the air, but when I go for a test drive it won't release after breaking.

The smaller hole behind the adjuster screw.

 

[Runner71]

The smaller hole behind the adjuster screw.

Okay so the longer end off the spring goes behind the adjuster. Did not have the auto adjuster on before, was only a shorter but much "beefier" spring over the adjuster screw earlier also

 

[Sixpactogo]

Did you replace the Master cyliinder? I'm wondering if it is not releasing all the way. When the brakes are locked up, try loosening the master cylinder from the firewall to see if they release. If so, you will need to shorten the push rod some.

 

[Runner71]

Did you replace the Master cyliinder? I'm wondering if it is not releasing all the way. When the brakes are locked up, try loosening the master cylinder from the firewall to see if they release. If so, you will need to shorten the push rod some.

No did not replace the Master cylinder. It stops great just wont release like it did before I replaced all the stuff.

 

[MIKESPOLARA]

No did not replace the Master cylinder. It stops great just wont release like it did before I replaced all the stuff.

Sounds like a hydraulic lock up to me. Something in your mod may be off

 

[R413]

Sounds like the line lock is the problem.

 

[Runner71]

Sounds like a hydraulic lock up to me. Something in your mod may be off

Sounds like the line lock is the problem.

Yeah that's what I was thinking but cant figure out what causing it. I hear it locking and releasing when I push the buttom. If the car sits for a longer time the break pressure fade and the car roll on it's on again in N.

 

[Runner71]

Maybe I should take off the little "T fitting" they want u to add and just mount it between the Master and the pressure block

 

[pnora]

Maybe I should take off the little "T fitting" they want u to add and just mount it between the Master and the pressure block

To me I would just bypass the solenoid and see what it does. By some chance is the solenoid marked in and out?

 

[Runner71]

To me I would just bypass the solenoid and see what it does. By some chance is the solenoid marked in and out?

Yes, it's mounted as shown up. Brakes probably works fine if I bypass it but I want the line lock on sticky tires

 

[69a100]

How old are your hoses? With old hose the internal lining will separate from the outer, and when you hit the brake that inner hose will collapse and not release because of the vacuum created causing a lock up condition. AMHIK Good Luck

 

[Runner71]

How old are your hoses? With old hose the internal lining will separate from the outer, and when you hit the brake that inner hose will collapse and not release because of the vacuum created causing a lock up condition. AMHIK Good Luck

That i am aware off. Just replaced all the hoses and brakelines, thats why im clueless. Must be something with line lock valve

 

[pnora]

Yes, it's mounted as shown up. Brakes probably works fine if I bypass it but I want the line lock on sticky tires

View attachment 1303595

You need to try something and that is the most logical. If they work ok after bypassing the solenoid then there must be a defect in it.