Attex brake disc noise?

[RocketHurricane]

I've got a 400 Chief with the big brake discs that are mounted on each side of the T20 and are loose on the shaft. They don't spin at all but you can shake them from side to side and they kind of act like a cymbal. When the Attex is moving and you use a lateral - for example you are moving and you pull back on a lateral abruptly to brake there is noise as that side of the T20 stops. Like wise there is a noise if you push the lateral forward quickly. I think the noise is from the brake disc bang around on it's loose mounts. If you apply the brake peddle so that it is lightly gripping the disc, and then operate a lateral as before the noise doesn't occur. Anyone run into this kind of thing? I originally thought maybe the chains where loose and that was causing the noise, but they don't seem to be.

Any thoughts on how to tighten up those discs mountings?

[dave phelps]

Is the t20 loose in the mounts and moving around maybe??

[Don]

The discs on the Chief/Thunderchief were loose fitting by design. I'm assuming that's so the mechanical calipers don't have to move too far and alignment isn't so much of a problem. The noise can be annoying, but I don't think it will cause any harm (mechanically, anyway- emotionally is another matter).

[smudvapor]

I had that problem too. It can help get rid of it by adjusting the caliper up to there isn't as much travel in the brake pedal. That way the discs sort of float between the pads and the pads act as a sort of dampener on the brakes. Just don't adjust too tight. You don't want them to grab and wear the pads out. Another thing I had was when the chains are too loose they can actually hit the side of the disc when you turn and they tighten up. Loose or worn out chains can sometimes do this.

[RocketHurricane]

I thought it was a loose chain at first. I've tightened it up a bit but haven't had the machine out yet to see if that eliminated the noise, or some of it.

I had that problem too. It can help get rid of it by adjusting the caliper up to there isn't as much travel in the brake pedal. That way the discs sort of float between the pads and the pads act as a sort of dampener on the brakes. Just don't adjust too tight. You don't want them to grab and wear the pads out. Another thing I had was when the chains are too loose they can actually hit the side of the disc when you turn and they tighten up. Loose or worn out chains can sometimes do this.