Dhx 5.0 propedal knob issue

So is it just the knob, or is the shaft moving up with the knob (and it is the smaller pp not the boost)?

Is the bolt bottoming/tightening? Detent bearings and springs clean and in the proper place?

Any chance you got some dirt up in the pocket in the knob that the shaft goes in so the knob is not sitting on the shaft correctly?

..........

Perhaps it matters how far the PP shaft is turned in/out when you take the knob off? We'll pull one apart at the shop tomorrow afternoon and report with results.

Haha. We had the same results. Even with the set screw tightened the PP knob was "floating" on the BBs. We also run little to no pro-pedal so the knob was turned counter clockwise all the way. There is a lot of endplay on the exposed PP adjustment shaft:
out

in


Just turn the shaft all the way in, and make sure the milled key in the PP knob is oriented to fit the profile of the shaft, then use the set screw to pull the shaft into the cutout on the knob ...all the while keeping the springs and BBs steady.

Trying to push the adjuster onto the shaft doesn't work as well because of the shaft endplay, the shaft rotates as you tighten the set screw and becomes misaligned with the cutout in the knob.
Let us know if that helps.

I second BrooklynMachines finding, the shaft is a bit of a bugger to keep aligned while putting things back together, but seats just fine if you take care.

The knob is keyed to the shaft. rotate it slowly until it seats on the shaft then tighten the screw.

I'm surprised no one actually figured out the issue.

The problem is that the shaft and knob interface is a little silly - because it provides two ways for the shaft to seat, and only one is correct. When oriented incorrectly, the shaft will still seat (making you think you did it right) but bottom out too early - resulting in the gap and play. The solution is to note that orientation, lift the knob off the shaft carefully, and reinstall it rotated 90 degrees. Lift the shaft up into the knob with the screw while you tighten it, otherwise the shaft may rotate again while you are tightening the screw and unfortunately the default way for it to seat again seems to be the wrong way.

If you did it correctly there should be no up-down free play, and minimal gap - no more than 0.5mm anyway at a rough guess.

theres a thing called a manual. look around on the fox website inder the tech stuff and see, ther should be a pdf for the 5.0