G’day all

I’ve been working on rebuilding the stepper units on the playfield and thought I’d post some pics of the end results.

In my last posts I mentioned how one set of wiper fingers fell to bits when I removed it from the stepper unit. Well the pics in this post show how I repaired it. I bought a pack of M2 size machine screws from Dick Smith, these packs include various length screws, nuts, flat washers, spring and shake proof washers.. just the thing to repair this wiper arm I thought! I selected a couple of screws of appropriate length and fitted two short lengths of heatshrink tubing, just long enough to poke through the wiper arm screw holes… thus insulating the screws from the wiper fingers! I fitted the screws through the holes, the heatshrink made them a perfect fit, added a flat washer and a spring washer to each one, plus some loctite for good measure.

Pics show the results.