What to match when replacing an EM motor

Match the voltage (usually 50 or 24 V AC), the spin direction (an AC motor's direction can't easily be reversed), the RPM, the shaft diameter (most often 1/4, 5/16 or 3/8 inch) and length, the threaded mounting holes on the gearbox, the winding resistance, and whether the output shaft is on the same side as the motor frame or opposite it.

Systems

• Electro-mechanical

Related tips

• Rewinding a burnt EM motor winding
• Splitting, cleaning and re-greasing an EM motor gearbox
• Motor coasts past its stop: broken armature spring

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)