Thorens TD124 MKII idler wheel and stepped pulley problem

[billinrio]

The idler wheel of my Thorens TD124 MKII (ser#83443) isn't properly engaging the stepped pulley at any of the speeds. As I've tried to show in the drawing, the idler wheel contacts too high



I've checked both the owner manual and service manual, but find no mention of any idler wheel/pulley alignment. I only have one thin nylon washer below the idler wheel and I don't think I should run it without any washers at all. The manual shows both felt and nylon shims beneath it.

Thanks for any advice.

[kevinkr]

Verify that nothing is stuck/sticking in the speed stepping mechanism, and idler arm, and make sure that the cam that sets the pulley height is fully seated with washer, and c-clip in place.

You can raise the intermediate pulley slightly by loosening the lock nut and turning the set screw slightly clockwise to raise the intermediate pulley.

[billinrio]

Thank you for your reply. I've tried to loosen the lock nut, and it doesn't budge. I sure don't want to apply too much torque and end up breaking it! I have no access here in the tropics to penetrating oil. In envy people who can just walk down to the nearest hardware store (I suppose that nowadays in the U.S. I should say drive over to the nearest Home Depot).
i'm not sure where to locate the "the cam that sets the pulley height ... with washer, and c-clip".