Super Major Brakes

icom102 · Post by **icom102** » Sun Sep 12, 2010 9:17 am

Put new brakes on the Sm yeserday but the o/s keeps sticking both in forward and reverse is this hard to fix ?

Dandy Dave · Post by **Dandy Dave** » Sun Sep 12, 2010 1:38 pm

What do you mean by O/S??? Dandy Dave!

icom102 · Post by **icom102** » Sun Sep 12, 2010 1:42 pm

O/s as in off side off the tractor

icom102 · Post by **icom102** » Sun Sep 12, 2010 2:58 pm

Ok it seems when i brake and release the pedel the brake is not coming off if i hit the caseing a few tips of a hammer it releases mmm

Tractorbob3 · Post by **Tractorbob3** » Sun Sep 12, 2010 10:55 pm

Without wishing to be insulting - have you adjusted the brakes since you fitted the new linings/discs? I had a similar problem and it was because I had backed off the adjusters all the way and not then re-adjusted them properly. As a result, the ball bearings were riding right to the top of the grooves and lodging there. My instinct (because I didn't know what was happening) was to slacken the brakes off further - which was the opposite of what I needed to do. Try re-adjusting and see what happens. Good luck!

icom102 · Post by **icom102** » Sun Sep 12, 2010 11:10 pm

cheers will do

muz · Post by **muz** » Fri Sep 17, 2010 9:50 am

I dont mean to state the obvious, but I take it all the linkages are lubricated and free, as the 'z' type links sit below the footplate and are prone to getting a lot of water and mud on them, I have to strip mine off and clean them up every couple of years on my 62 Sm

icom102 · Post by **icom102** » Fri Sep 17, 2010 10:31 am

Yes alls free when the brake sticks if I tap the caseing with a hammer the brake releases

Supermanuel · Post by **Supermanuel** » Mon Oct 25, 2010 3:41 pm

Four alternative reason for the brakes.

Somebody has turned off material from the brake housing to compensate worn linings and the discs are no more free to rotate with new linings.

Out of adjustment. Backing bolt not adjusted correctly or the spring outside fully compressed.

The expander springs are weak.

Ball race is worn on expander. Balls hv made cavities.

Post by **Brian** » Mon Oct 25, 2010 5:25 pm

Super brakes stuck on brand new tractors. I was trying to sort the same problems back in the 1960's.

The problem was there on all tractors that fitted that design of brake. Sometimes it seems they are too good at gripping. I have tried new springs and balls, even new actuator plates and have never really cured the problem.

I suffer from the same problems with Nuffy and have tried everything I can to get them to operate correctly. They will work for a short time, then, if you leave her standing for a week, its back to sticking brakes. At the moment, she stops, fast, and the brakes free 85% of the time.

If the brakes are used constantly, then they do not give problems until they get dust on the drive splines that causes the discs to stick.

I do not think the asbestos free liner materials help too much either

Grani · Post by **Grani** » Mon Oct 25, 2010 8:40 pm

On my Roadless the left side has the problem. I am use to it now and I get it to work by driving the first 10m in low gear and with diff lock on, braking hard on the left at the same time. Then it works for the rest of the day.

Post by **Brian** » Mon Oct 25, 2010 9:52 pm

And I thought I was the only one to work that trick!

Supermanuel · Post by **Supermanuel** » Sat Oct 30, 2010 2:43 pm

I have never had problems with Super brakes when correctly adjusted.

If the brakes need some heating to work properly, there are some similarities with clutch disk having some drops of oil. May be diff lock pin seal is leaking?

icom102 · Post by **icom102** » Sun Oct 31, 2010 11:38 pm

One side still jamming on when i brake but the other side workes ok i changed the springs and ball bearings in the actuatior on the side thats locking and its still doing it

Supermanuel · Post by **Supermanuel** » Mon Nov 01, 2010 4:43 pm

Nothing happens without a reason. Try to change parts from left to right, first the actuator if no improvement try with the disks.

This to identify which part is causing the jam. If I remember correctly the actuator can also be inverted.

Kim · Post by **Kim** » Mon Nov 01, 2010 4:46 pm

I had a similar problem on one of my Nuffys. Cleaning and polishing the actuator balls and cleaning the races they ride in and then giving the balls and races two coats of liquid silicone(letting dry between coats) solved the problem for me. Also, I coated all linkage pins with never seize compound. Good stuff but DON'T get it on the brake surfaces!