Those running a t-case parking brake

[dremu]

or other driveshaft-ish mounted brake... I'm curious how close to the rotor the caliper/pads should be, and how much the pads should wiggle.

I went what I thought was cheap and got a rotor from TSM that mounts to the yoke on the back of my 2WD TH400, and their mechanical caliper. i suspect I will regret this decision as it's been neither all that cheap nor remotely easy, but that's as may be. Too late now

Anyway, when I had it mounted up once the pads were dragging a bit and got waaaay warm, like I could smell them, just going around the block.

I've changed the mounting, as the rotor had too much play anyway, and I *think* the pads are pretty loose now ... but I was curious if any of y'all had experience with this and had any real-world information to pass on.

-- A

 

[ryan22re]

Dunno on the looseness part, but what I would try to do is use some pad spreading springs (don't know the technical term). Ifs Toyota's with the 4 piston front calipers (and ford escorts I think), had two springs that pushed the pads away from the rotors. Depending on how your caliper is, you could probably drill two small holes in the backing plates of the pads and install the springs.

Something like this:

http://www.4x4wire.com/toyota/maintenance/bleedingbrakes/caliper.jpg

 

[ntsqd]

Those springs don't seem to do much more than attempt to control rattles. I've run Patch with and w/o them with not much difference in anything.

Looking at the TSM page on the caliper in question it looks like there are already springs there to do that. My guess is then either too much rotor run-out, the caliper (& bracket) aren't square to the rotor, or the operational range is too narrow.

 

[dremu]

Those springs don't seem to do much more than attempt to control rattles. I've run Patch with and w/o them with not much difference in anything.

Looking at the TSM page on the caliper in question it looks like there are already springs there to do that. My guess is then either too much rotor run-out, the caliper (& bracket) aren't square to the rotor, or the operational range is too narrow.

Yep, it has springs. Initially I had the rotor on the business end of the yoke, which just, umm, was dumb, and I do not wish to be reminded of doing it. Runout was severe.

The rotor is now on the tranny (i.e. flat ) side of the yoke, and runout is rather less ... I had trouble getting my dial indicator to stay put upside down, even with the magnetic base, but I think it's better.

The caliper and bracket are of debatable squareness to the rotor, and that was another fear of mine. I did at least square up all the bits whilst welding them, and mounted it as square as I could ... I should try the thing again, with this new mounting, and see how it goes.

Worst case, I'll just carry some of my scrap 4x4 pressure-treat around to use as wheelchocks

Thanks guys!

-- A