Thread: Uneven Brake Wear

the first cause is the sliding pins not being adequately lubricated... (if thats the calipers you have

the second is a sticking piston. pull down the caliper clean replace seals and dont be shy with the brake fluid compatable rubber grease.

Hi, just make sure all the caliper pistons are moving freely, that the pads are not sticking in the caliper and clean all dirt and corrosion from calipers. Use copper grease on the edges of the pads when you put new ones in.use new pins and springs and you should solve that problem.

Just for info, the Rangie has twin piston calipers.
The caliper is not sliding.

The only thing I could think of is the piston is not retracting after a brake application, and the pad is slightly rubbing.
This would indicate stuffed seals wouldn't it?

Oh, all pistons retracted easily when fitting the new pads.

Originally Posted by kie4

Hi, just make sure all the caliper pistons are moving freely, that the pads are not sticking in the caliper and clean all dirt and corrosion from calipers. Use copper grease on the edges of the pads when you put new ones in.use new pins and springs and you should solve that problem.

Didn't think of that.
Will disassemble them on the weekend and investigate.
Thanks

Originally Posted by Ralf_the_RR

Had to change the rear brake pads on my 79 Rangie last night.

Both sides had maximum wear on the inside pad, while the outside pad still had plenty left in them.

What can cause this, and what can I do to fix it?

That used to be a well known event for classic rangies (was even mentioned in the Vic RR club book "torque tips??" back in the early 80's)

I just used to swap the inside to the outside on a regular basis to get max life.


Martyn

the caliper is two parts bolted together........the brake line is connected to the inner half......and the outer half is fed through a passage between
the two halves.......when you hit the brakes....it pushes on the pistons on the inner half of the caliper first......
till they hit the rotor......and then the pressure continues through the passage to the outer pads.......


this all happens way too quick for it to be measured......but with all the applications of the brakes......
if the inner pads hit the rotor that split second before the outers do......you will have them start to wear out sooner......


how many brake applications do you think you get out of a set of pads.......?

you will probably be surprised to find youve already pressed the brakes ten times before you even reverse out of the drive.......

Originally Posted by Bushie

That used to be a well known event for classic rangies (was even mentioned in the Vic RR club book "torque tips??" back in the early 80's)

I just used to swap the inside to the outside on a regular basis to get max life.


Martyn

So, I'm not alone. Last time I changed them I don't recall the uneven wear.
Oh well. Might adopt the "swap them" at a regular interval (yearly).

Originally Posted by DEFENDERZOOK

the caliper is two parts bolted together........the brake line is connected to the inner half......and the outer half is fed through a passage between
the two halves.......when you hit the brakes....it pushes on the pistons on the inner half of the caliper first......
till they hit the rotor......and then the pressure continues through the passage to the outer pads.......

Mr Bernoulli and his theorum disagrees with statement.

A bit of air trapped near the second piston might cause this to happen.
mmmmmmmm. May need a little tiny bleed!

Originally Posted by DEFENDERZOOK

this all happens way too quick for it to be measured......but with all the applications of the brakes......
if the inner pads hit the rotor that split second before the outers do......you will have them start to wear out sooner......


how many brake applications do you think you get out of a set of pads.......?

1,487,251 last time I counted


Thanks for your comments guys.

Looks like I might have to pay a bit more attention, and will adopt the swap em system.