Update on rear brake binding ???

[macabethiel]

Rear Brakes Getting Hot

Right, I've change the cylinder and a new set of springs, wheel turns freely with it all adjusted up so then took for a spin and drum is still getting hot. Back home I decided to clamp the flexy brake hose and release the pressure from the bleed nipple on cylinder so basically the hydralic side of the brake is disabled but the drum is still getting hot so am I looking at a bad drum or wheel bearing ??? But what I don't understand is when the car is up in the air it's fine and will a bearing really make the drum too hot to touch after only 3 or 4 mile drive ?

Its a daft question but how hot is your hot ? Are you talking hot brake drums with smelly hot brake shoes or just hot to the touch ?

Can't see that distorted drums are anything to do with it.
If you have no binding on the drum when its off the ground and you rotate it by hand I can't see the adjuster causing an oval drum to bind they are not that good.

Has this just come on out of the blue or has something been done to this hub?

If the bearing was overheating you would normally hear it and feel it when you jack it off the ground and rotate the wheel.
Has someone over tightened the bearing nut ?
Not sure on yours if its an adjustable bearing with a split pin or a pre-set torque with a collapsable spacer ?

 

[elty001]

Had a similar issue on my old terrano and it turned out to be a knackered hand brake cable.
It was jamming up but not all the time.sometimes if would release and some times it wouldn't.
It's a bit of a head scratcher this one:nenau

 

[John B]

Thanks for your help everyone, I've completely disconnect the hydralic side of things and it still does it. The shoes were put on in April this year and shortly after it got hot. The reason why this has all come to light is because the handbrake was binding so I striped it down and added a spring from the arm on the shoe to the shoe itself to return the handbrake arm. The handbrake is working fine and I don't think it's the cable as the drum gets hot even with the handrake completely slack. The shoes are made by mintex and I noticed that the lining on the two shoes are a different thickness. On both sides the shoe with the thickest lining is facing forwards.

 

[John B]

Its a daft question but how hot is your hot ? Are you talking hot brake drums with smelly hot brake shoes or just hot to the touch ?

Can't see that distorted drums are anything to do with it.
If you have no binding on the drum when its off the ground and you rotate it by hand I can't see the adjuster causing an oval drum to bind they are not that good.

Has this just come on out of the blue or has something been done to this hub?

If the bearing was overheating you would normally hear it and feel it when you jack it off the ground and rotate the wheel.
Has someone over tightened the bearing nut ?
Not sure on yours if its an adjustable bearing with a split pin or a pre-set torque with a collapsable spacer ?

It's getting hot so that the brakes start to bind, to the point you can feel it stop the car on its own when in traffic etc

 

[macabethiel]

Clutching at straws but suspect wrong brake linings.

 

[spautoparts]

Had the same problem with my T2. Turned out to be a seized handbrake cable. Changed it and the problem went away

 

[John B]

Clutching at straws but suspect wrong brake linings.

Is there more than one type then mate?

 

[micktheshed]

Just a thought: are your drums way oversize through wear as this can cause digging-in of the leading shoe which may then stick on?
Suggest you also chamfer the leading edge of both (all) shoes as this can relieve the above problem.
Just to clarify if the shoes are sticking on: when you come to a halt can the car be pushed forward or backward, if not does it free-up after being driven a short distance in reverse WITHOUT applying the brakes (this may un-stick them)?
If it's def. not the cable I would then suspect hyd. lock somewhere, sticking adjuster or the wheel bearing.

Clutching at straws here, but are the shoes free to move on the backplate? Try lightly greasing all the contact points with copper grease. Are you certain that the shoes are fitted exactly as they should be? Get someone else to check if pos. it's a silly point but everything needs to be eliminated ....& we are all getting so desperate on here!

 

[tobias]

Change the brake piston in hub it's sticking open when braking hyd lock???