DLEX3470V Dryer Drum Rollers & Belt — What to Replace and How to Diagnose
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Understanding the Problem
When an LG DLEX3470V dryer starts making loud squeaks, grinding noises, or a rhythmic thumping during a cycle — or the drum stops turning properly — the most common culprits are worn drum rollers/shafts and a stretched or frayed drive belt. Over time rollers develop flat spots or worn bearings, shafts can wear where they contact the roller, and belts can crack or slip. These failures cause excess drum wobble, extra friction, and abnormal noises. If you ignore worn rollers or a bad belt, the damage can worsen: the drum can wear the cabinet or seals, motors and idlers can be overstressed, and loads will no longer dry evenly. Replacing the set of 4 drum rollers/shafts along with the drive belt is a common preventative and corrective repair that restores smooth, quiet drum rotation and extends the dryer’s life.
Common Symptoms
Squealing or grinding noises, loud thumping each drum revolution, visible drum wobble, belt fraying or breakage, drum not turning under power, uneven drying or increased drying times.
Common Causes
- Worn drum rollers or flat spots on rollers causing rough rotation and noise
- Worn or bent roller shafts that no longer ride smoothly in the roller bearings
- Stretched, frayed or broken drive belt (or a failing idler pulley) causing slipping or stopping the drum
Popular Parts That Fix This Problem
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Helpful Repair Tip
Lift the drum edge and try rotating it by hand with the dryer off. A healthy drum should spin freely and silently; roughness, scraping, or a grinding feel indicates bad rollers/shafts. If the drum spins freely but won’t turn under motor power, the drive belt or motor/idle pulley is likely the issue.
Frequently Asked Questions
How hard is it to replace the drum rollers and belt on a DLEX3470V?
Moderate skill level. The repair typically requires unplugging the dryer, removing the top and front panel (and possibly the lint trap housing), lifting the drum slightly to gain access to the rollers and belt, and replacing the rollers/shafts and belt. Most DIYers can complete the job in 1–2 hours with basic hand tools (screwdrivers, nut drivers, possibly a socket set). Follow a step-by-step guide or service manual for safe disassembly and reassembly.
Should I replace all 4 rollers and the belt at the same time?
Yes. If one roller has failed from wear, the others are likely not far behind. Replacing all 4 rollers (and shafts) plus the belt and inspecting the idler pulley and drum seals is the most reliable repair. It prevents having to open the dryer again soon and helps ensure smooth, balanced drum rotation.
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