Bridgeport Series 1, table power feed.

[DaedalusParticipant @daedalus]

I have acquired an Adcock Bridgeport Series 1 with a 16 speed belt drive, (4 on the belt, 2 speed motor and 2 back gear), 48″ table and chrome ways, basically for free, just had to pay to have it moved. The 6F power feed for the table is not working. The Erskine controller board seems to be OK, although the DC voltage is on the high side with my Fluke meter at around 137V. There also seems to be a 7V output as well. Not sure what that might be. Does anyone have a manual for this board so that I can see about adjusting the voltages. I do have a wiring diagram but it is in such poor condition that I cannot read it. A full wiring diagram for the whole machine wouldn’t go amiss.

Also what should the resistances be for the motor armature across the brushes and across the field windings? I’m getting about 1.8ohms and the field is 1150ohms which seems a bit on the high side. Nothing is down to earth or otherwise a problem with a 500 volt insulation test.

And finally the only number I can find on the machine is on the front left way on the Y axis which is P1777, apparently the number on Adcock machines should be inside the rear cover, but nothing to be found there.

Thanks in advance guys.

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