DLGX3571V Dryer Belt Replacement – How to Replace the Drum Belt
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Understanding the Problem
What this is and why it matters: The dryer drum belt (also called the drive or flat belt) wraps around the drum and connects to the motor pulley. When the belt is worn, glazed, stretched, or broken the drum will not tumble even if the motor runs, or you'll get squealing, slipping, or a burning rubber smell. Step-by-step diagnostic and replacement instructions: 1) Safety first: Unplug the dryer or turn off the circuit breaker and, for gas dryers, shut off the gas supply. Always work with power removed. 2) Confirm the belt is the problem: Open the dryer door and try to rotate the drum by hand. If the drum spins freely without resistance or spins easily while the motor sounds like it runs, the belt is likely broken or off. A visual inspection through the front opening can also reveal a snapped belt or glazing. 3) Gather tools and parts: Basic tools typically include a screwdriver set (Phillips and flat), 5/16" or 1/4" nut driver, socket set, long-nose pliers, and a replacement drum belt. Optional: work light and magnetic tray for fasteners. 4) Access the belt: Depending on model variants, remove the top panel (release clips at front or remove screws at rear), then remove the front panel/door assembly to expose the drum. On many LG models you remove two screws under the top to lift it, then release the front panel clips and unhook the door switch connector. 5) Remove the drum: With the front panel off, the drum will sit supported on rollers. Lift the drum out of the cabinet (you may need to loosen or remove the bulkhead/air duct). Take note of the drum orientation and how the old belt routed around the drum and motor pulley. 6) Inspect related parts: Check idler pulley, motor pulley, drum rollers, and front/rear glides for wear or damage. A seized roller or damaged glide can cause rapid belt wear and should be replaced if rough or loose. 7) Replace the belt: Loop the new belt around the drum ribs (if ribbed) in the same orientation as the old belt. Position the drum back into the cabinet and route the belt around the motor pulley and idler. Pull the idler to apply tension and ensure the belt seats correctly on the drum. Rotate the drum by hand to confirm smooth movement and correct belt tracking. 8) Reassemble: Reconnect the door switch (if disconnected), reinstall the front panel, secure the top panel, and reattach any screws. Restore power and run a short test cycle to confirm the drum tumbles quietly and normally. 9) Final check: Verify there are no rubbing sounds, no slipping, and no burning smell. If you still hear squeal or see slipping, recheck belt alignment and inspect the idler and motor pulley for wear. Safety note: Always disconnect power and gas before beginning repairs. If you are unsure about any step, or if gas connections must be disturbed, consider hiring a qualified technician. Keep hands and loose clothing away from moving parts when testing.
Common Symptoms
Drum will not turn but motor runs; loud squealing or rubbing noises; burning rubber smell; intermittent tumbling; machine tumbles slowly or slips under load.
Common Causes
- Worn, glazed, stretched or broken drum (drive) belt
- Belt slipped off the pulleys or improper routing
- Worn idler pulley, drum rollers or motor pulley causing belt damage
- Foreign object caught between drum and cabinet increasing belt wear
Popular Parts That Fix This Problem
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Helpful Repair Tip
Confirm the belt is faulty by opening the front and turning the drum by hand: a broken belt will let the drum spin freely and you may see a loose/broken strap or missing rib. Also look for glazing or rubbing marks on the belt and check idler pulley resistance.
Frequently Asked Questions
How long does it take to replace the dryer belt?
For a DIYer with basic tools, belt replacement typically takes 30–90 minutes depending on model and your familiarity. Allow extra time to inspect and possibly replace rollers or the idler if worn.
Can I use a universal replacement belt instead of an OEM belt?
You can use an aftermarket/universal belt if it matches the exact length, width, and ribbed/smooth profile required by your dryer. However, using a belt matched to your model (OEM or verified aftermarket) ensures correct fit and longer life. Always verify the belt specs against your dryer model tag before purchasing.
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