Mauthe 500

[TEACLOCKS]

This Strike barral arbor bearing, bushing, hole needs too be bushed.
HOW
How would this be done with the slot in it ?
Its a good 1/8" [.125] pushed to the outside.

 

[Jeff C]

I overhauled one of these in April. Doesn't the click wheel have a shoulder that extends through to the top steel plate acting as the bearing per say? I could be wrong. One thing I did notice about this movement, I had to turn down a set of Hermle barrel caps and replace them on this movement. I also replaced all three springs, they were torn on their outer ends.

If your interesed this is what I bought for this movement. I copied this from my invoice to the customer.

T - W-18.60mm S-.48mm L-49" Barrel-39mm Merritts MS192
S - W-18.6mm S-.48mm L-49" Barrel-39mm Merritts MS192
C - W-24.21mm S-.44mm L-57" Barrel-42mm Merritts MS239

 

[shutterbug]

You're definitely missing a part (see it on both of the other wheels) and it looks like it was running a long time without it. If your new bushing is the same thickness as the plate and the same size as the original hole, it should work fine. You'll need to find or make the other part before you run it again. The bushing won't hold up any better than the original metal plate did.

 

[antiekeradio]

I believe Jeff is correct, the wear on the hole should not be a problem, because the actual front arbor bearing happens between the ratchet wheel and the removable bridge.

Also note that this only moves while winding, and any friction has no effect on performance of the clock. As long as the arbor is held in position, there's no problem at all.
Wear that does have direct impact on performance happens between winding arbor and the mainspring barrel. Especially the base of the barrel (at the side of the toothed rim) is prone to wear out.
If that happens the meshing of the gears is screwed up, and power is lost.