LG Gas Dryer Rear Drum Roller Replacement – How to Diagnose & Replace the Rear Roller
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Understanding the Problem
A worn or failed rear drum roller (drum support) causes rumbling, squealing, visible drum wobble and accelerated belt wear. The roller supports the back of the drum and spins on a shaft; when the bearing or rubber surface fails, the drum rides rough and makes noise. 1) Prepare and diagnose - Tools: nut drivers (1/4", 5/16"), Phillips screwdriver, socket set (7/16" or 1/2"), putty knife, work gloves, flashlight, shop vacuum for lint. Optional: 6mm Allen or Torx depending on model. - Safety: Unplug the dryer from power. For gas dryers, turn off the gas shutoff valve as a precaution and do not disconnect the gas line unless you are qualified. - Move dryer away from wall; disconnect exhaust duct if necessary. - Confirm symptom: rotate the drum by hand. Listen for grinding or feel rough spots. Grab the drum at 6 and 12 o'clock and wiggle — excessive vertical or horizontal play indicates worn rollers or worn shaft. - Inspect: remove lint from around the rear bulkhead and behind the drum with a flashlight. Look for flat spots or cracked rubber on the rear roller. 2) Parts & plan - Order the correct rear drum roller or roller kit for your exact LG model number (usually on the dryer door frame or rear panel). Many kits include rear roller(s), axle/shaft, and screws. - Consider replacing front roller/idler and belt at the same time if they show wear. 3) Disassembly (typical procedure — consult your model's service manual for variations) - Unplug dryer and turn off gas valve. Pull dryer forward to access the back. - Remove top panel: on many LG models insert a putty knife under the front lip to release two spring clips, then lift the top. - Remove lint filter housing or control console if it blocks access (some models require removing a couple of screws). - Remove front panel: open the door, remove screws across the front bulkhead, lift the door-switch harness if present, and tilt the front panel forward and set aside. - Remove the drum: pull the drum forward and out. You may need to lift slightly to clear the rear support lip. - Remove rear bulkhead/boot (if necessary) to access the rear roller assembly: remove screws securing the rear panel or bulkhead and lift off. 4) Replace the rear roller - Note orientation and any washers/spacers. Remove screws or the shaft holding the roller. Pull the roller off the shaft. If the shaft is worn or bent, replace it. - Clean the mounting area and remove lint and debris. Do not use grease on the roller bearing unless the new part specifically requires it — most new rollers have sealed bearings and are lubricated for life. - Install the new roller onto the shaft or into the bracket, reinstall any washers/spacers, and torque screws snugly but avoid over-tightening plastic/rubber parts. 5) Reassembly and test - Reinstall the bulkhead (if removed), reinstall the drum, ensuring the drum rides on the front glide and rear roller correctly. - Reattach the front panel, top panel and any removed brackets. Reconnect exhaust duct and push dryer back into place. - Reconnect power. Turn the gas valve back on (if you turned it off) and run a short test cycle to check for noise, wobble or rubbing. 6) Verification - With the dryer running empty, listen for smooth operation. Re-check for unusual vibration. If noise persists, inspect front drum support, idler, motor pulley and belt for wear. Safety note: Always unplug the dryer before working on electrical components. For gas dryers, turning the gas shutoff off is recommended when moving or servicing the appliance; do not disconnect the gas line unless qualified. If you smell gas after reassembly, stop, shut off the gas, ventilate and call a qualified technician or your gas utility.
Common Symptoms
Loud rumbling or squealing during operation, visible drum wobble, clothes catching at the rear, and accelerated belt wear or frequent belt breakage.
Common Causes
- Worn or seized roller bearing causing rough spinning
- Flat spots or cracked rubber on the roller surface
- Worn shaft or mounting hardware allowing excessive drum play
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at ProsourceParts.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
With the drum removed, spin the old rear roller by hand — a bad roller will feel rough, bind, or have flat spots you can feel with your fingers.
Frequently Asked Questions
How long does it take to replace the rear drum roller on an LG dryer?
For a homeowner with basic tools it typically takes 30–60 minutes. If you need to order parts or replace additional components (front roller, belt), allow 1–2 hours.
Do I need to turn off the gas or disconnect the gas line to replace the rear drum roller?
You should unplug the dryer from power before working on it. Turn off the gas shutoff valve as a precaution if you move or heavily service a gas dryer, but you generally do not need to disconnect the gas line to replace the rear drum roller. If you smell gas at any time, stop and contact a professional.
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