Won't spin or agitate
Parts commonly needed when your Samsung dryer has this issue. Recommendations are based on repair patterns and may not diagnose your specific problem.
Verified Components
Parts
2Part numbers confirmed across multiple retailers for DV400GWHDWR
Repair tips for this issue
From the service manual for Samsung DV40J3000E Series Dryers (2014)
From the service manual
Good to know
3 technician insights for the Samsung DV40J3000E Series Dryers (2014)
Belt must be centered on drum during reassembly
When reassembling the drum belt after drum removal, the belt must be located in the middle of the drum. An off-center belt will cause tracking issues, uneven wear, noise, and potentially premature belt failure. The manual specifically warns about this during drum reassembly.
Fan nut direction is reverse of typical — CW to remove, CCW to assemble
The blower fan nut on this dryer has reverse threading compared to what many technicians expect: turn clockwise (CW) to remove the nut, and counterclockwise (CCW) to assemble/tighten. This is explicitly called out in the disassembly instructions for the motor assembly. Using the wrong direction will damage the nut or motor shaft threads.
Clothes too wet from washer — not a dryer problem
When customers complain about long drying times or clothes not drying, one common cause is insufficient spin-out by the washer. Clothes entering the dryer excessively wet will take significantly longer to dry regardless of dryer function. Before diagnosing the dryer, check if the washer is completing its spin cycle properly.
Seeing an error code on your display? Look up your error code → for more specific diagnostic information.