In reply to Patrick Boekstjins

Sometimes goes like that - no replies, I mean.

I suppose everyone thinks that everyone else will offer comments or
advice and then no-one does.

All I can contribute is that I specialise in restoring Steck PEDAs. The
last but one has a Motora. This machine was run off a mains dropper to
cope with UK voltage. The dropper consists of two wire-wound resistors,
wound on slabs of slate. This is buried between two of the uprights at
the back of the piano.

When I bought the piano, the previous owner warned me that although it
had worked well, the mains dropper had a tendency to scorch the wall
paper!!

The motor itself was working but ineffective as its inner gasket which
is, as you know, something like a miniature washing machine door gasket,
was perished and crumbled. I cleaned and re-greased the bearings and
then scratched my head as to how to replace the gasket. A request for
help on MMD brought no replies (surprise, surprise!!).

So I cut a piece of half inch rubber tubing lengthways and slipped it
over the motor flange. Then I stuck it back in with a large quantity of
silicone bath seal.

This works very well and the motor pulls about 45".  I have now had
this player running for at least two hours at a time and although the
dropper and motor run pretty hot, I have detected no damage to the
piano and my workshop wall remains unscorched!!

The motors are known to run very hot and on occassion the grease can
melt and run down through the motor and ruin everything.

This machine had proved to be a real problem and incidentally the
following may be a useful warning to others.

I had a real job regulating this machine and despite my best efforts,
it was not up to my usual standards. However, it did play reasonably
and for the money I was asking, was a good deal.

However, I finally discovered that the rotary selector
Duo-Art / Standard switch was faulty in that someone had added extra
milled channels in the moveable plate. I can not imagine why, unless it
was a vain attempt to correct defects.

I swapped it for another unadulterated plate and the machine sprang to
life anew.

Good luck with your pump, Peter.

Best wishes

Nigel Perry