1st gen Sequoia rear disc parking brake

[ozarkmud]

Hi all,

My first generation Sequoia has rear disc brakes and a useless parking brake. I feel nervous doing more work to it without fixing the parking brake.

From what I understand, the parking brake is some kind of nested drum?

There was very little tension. I adjusted and ended up maxed out my adjusters, and still am not getting any bite. Looked like they had maybe never been adjusted before.

I can't recall having parking brake issues on any rear drum Toyota. Are the discs more problematic? Why don't they just have a cable operated caliper on the disc? Seems goofy to have discs with drums...

Not really sure what I'm doing with this. I thought most modern drums were self adjusting. I wonder if these parking brakes are not.

Thank you!

 

[gnob]

Yes they are mediocre at best.
Have you torn the rotor off to inspect the parking brake shoes? I've seen the shoes separate before.
A property working brake should hold the vehicle.

 

[ozarkmud]

Yes they are mediocre at best.
Have you torn the rotor off to inspect the parking brake shoes? I've seen the shoes separate before.
A property working brake should hold the vehicle.

Just got it on stands and got a wheel off. I thought there was a gear to adjust through one of the two holes passing through the rotor, into the drum area?

I'll have to pull the caliper and the rotor to see what's going on.

Edit: Getting the caliper off was easy. The rotor is very, very stubborn though. One of the M8 threads for aiding removal is too rusted to use. The other one I've put some torque into, and no luck. I've used an old can of Liquid Wrench where the rotor goes around the axle end, and have been beating on it for a while. It's not freeing up. Any suggestions?

 

[gnob]

Put some load on the working screw. Use penetrant and maybe heat. Tap the lug face of the rotor and try to work it off.

 

[ozarkmud]

I got them off... The bolt moved it slower than I thought, but it worked. The other side had two good threads, so much easier.

I've figured out what's wrong.

No brake shoes!! Why??

I guess this clears things up. Will have to look into what parts I need.

Also, never seen this kind of rust spot on the back side of a disc before. Any ideas? Does it seem alright? I would've thought it would've been smoothed out by now.

 

[gnob]

Always nice when the problem is obvious. Lol