Dishwasher racks do not slide smoothly; they stick or derail during loading.

Safety first: Turn off the dishwasher; no electrical work is needed.

Step-by-step checks:

• Inspect wheels: Pull out upper and lower racks fully and check all wheels for flat spots, cracks, or missing clips. Replace damaged wheels.
• Clean rails: Wipe the rail tracks with a damp cloth to remove food particles or scale.
• Check rail stops: Ensure end stops are present and not broken; missing stops can cause racks to derail.
• Rack frame: Straighten any bent sections carefully or replace the rack if severely deformed.

Properly functioning wheels and rails will allow smooth rack movement.