The 4 most common part(s) or condition(s) which cause the symptom Dryer stops turning during cycle are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 2118676
The dryer drive motor turns the drum and the blower wheel to exhaust the air. If the dryer stops the motor might be defective. If the dryer stops and the dryer motor makes a humming noise there might be something caught in the blower wheel, or the drum might be binding. Try removing the belt from the motor and checking the blower wheel for obstructions. Also try rotating the drum by hand with the belt off, it should rotate freely. If the drum doesn't turn freely, determine what is causing it to bind. The dryer motor can't be tested easily. If the drum turns freely and the blower wheel is clear, and yet the dryer still keeps stopping mid-cycle the motor may be defective. it will need to be replaced. It is not serviceable.
RepairClinic Item # 1480353
This dryer has drum support rollers. There will always be two supporting the rear of the drum, and on some models there may be two supporting the front of the drum. The rollers must spin freely to work properly. If the roller axles are worn out the rollers may not spin freely which can overload the motor and the dryer stops. If the dryer stops mid-cycle, remove the belt and spin the drum, it should spin freely. If not, check the rollers and roller shafts.
RepairClinic Item # 400518
This dryer has drum support rollers. There will always be two supporting the rear of the drum, and on some models there may be two supporting the front of the drum. The rollers must spin freely to work properly. If they are worn out or start binding the motor can get overloaded and the dryer stops. If the dryer stops mid-cycle, check to be sure the drum turns freely with the belt removed. If not, check the rollers. Do not lubricate the rollers or roller shaft, lubrication will attract lint and cause the roller bearings to wear out faster. If the rollers don't turn freely, replace them. The roller shaft can often be reused, unless it has worn down. Clean the shaft thoroughly before installing the new rollers.
RepairClinic Item # 1309
The front of the dryer drum is supported by small pieces of plastic-like material. As the drum rotates, it slides on these plastic pieces. If the dryer stops mid-cycle, it may be that one or more of these plastic slides or glides has worn out. When they wear out the drum can start binding and put strain on the motor. The motor then shuts down and the dryer stops. Check the glides for wear and replace as needed.