I have a Drill press 16 Speed, Model BT1001A and
This is a difficult question. There are Euro, American and Chinese motors used, the most common is the chinese one phase motor at 110 volts. This is again complicated by the fact the chinese changed the hookups between 1999 and present models. In 1999 the Grizzly type clones from China had a six screw terminal block with the supply wires being: BLUE, BROWN, BROWN, BLACK, GREEN/YELLOW. with U1=BLUE, V1=BRN, Z1=nil, Z2=BRN, U2=BLK, V2=nil and you could reverse the direction of rotation by reversing the two brown wires on V1 and Z2. The new chineese wiring has made some changes to this and can be viewed on the details of any eBay site selling new Grizzly metal lathes of the 12X36 size of which they make about 9 varieties, keep reviewing each one, there are about two ads that give actual pictures of the new terminal blocks they use which have two flat bar jumpers right in the block and they use different terminals within the six on the motor.
My example is for a 1999 Chineese electric motor for the AT-400 Lathe/Drill/Mill which uses a generic
WANNAN 1 phase electric motor 3/4 HP, 1700 rpm, 11.0 Amps, 110 Volts, Date 99/7
American and Euro wiring tends to have other colors like white, orange, etc. and up to twelve of them so you have to research the exact motor, where it was made, and what date to get the right info. then you have to draw diagrams to match your switch wire hookup to the plate which is on the motor just beside the terminal block. Mine had two reversing switches and two motors plus another switch which selected between power to the mill or power to the lathe. Using the above color codes it worked right the first time only because I researched and then charted out every wire and did continuity testing to ensure functionality without worn-through or loose contacts. Also, unplug the machine and leave unplugged overnight before touching the wires as the capacitors carry a big charge at high voltage and hold it a long time.
