How to Install a Dryer Belt – Step-by-Step Guide
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Understanding the Problem
A broken or slipped dryer belt is the most common reason the drum won't turn. The belt wraps around the drum and connects to the motor via the idler pulley to create tension. This guide shows you how to confirm the belt is the problem and replace it safely. 1) Safety & prep - Unplug the dryer. If it's a gas dryer, turn off the gas supply and unplug the unit. Work in a well-lit area. Wear gloves and eye protection. - Gather tools: nut driver or screwdriver set (usually 1/4", 5/16" or Phillips), socket set (7/16" or 1/2" common), a putty knife (to release spring clips on top models), and the replacement belt. 2) Confirm the belt is bad (quick checks) - Try to rotate the drum by hand (with power off). If it spins freely with no resistance or you hear a clicking or flapping noise, the belt is likely broken or off the drum. - Look through the lint trap/door gap for visible belt damage (frays, missing ribs, snapped belt). 3) Accessing the belt (common methods) - Front-access dryers (most modern): Unplug, open lint trap, remove screws holding the lint housing/front panel, then tilt/remove the front panel. Lift the drum out slightly to expose the belt and idler. - Top-access dryers (some models): Remove the top panel (release spring clips with putty knife or remove screws), then lift the top and access the drum from above. - Rear-access dryers: Pull the dryer away from the wall, unplug, remove the rear panel to access the motor/roller area and route the belt around the drum from the back. 4) Remove the old belt - Note the routing of the belt before removal or take a photo. On most dryers the ribbed side of the belt faces the motor pulley/idler; the smooth side contacts the drum outer surface. - Release tension from the idler pulley (push it toward the motor to relieve tension) and slip the belt off the motor pulley first, then off the drum. 5) Inspect related parts - Check the idler pulley, motor pulley and drum support rollers for wear, wobble, flat spots, or noisy bearings. Replace any worn parts now; a new belt will fail prematurely if the idler or rollers are bad. 6) Install the new belt - Feed the new belt through the cabinet (if rear-access) or place it around the drum groove so the ribs face the motor/idler. Position the belt approximately centered in the drum groove. - Loop the belt around the motor pulley and under the idler pulley. Pull the idler to apply tension and ensure the belt seats properly on the motor pulley grooves. - Rotate the drum by hand a few times to confirm the belt tracks in the groove and the tension feels firm (no slipping). 7) Reassemble - Reinstall the front/top/rear panel and any screws you removed. Replace the lint screen and plug the dryer back in (and turn gas back on for gas dryers). 8) Test run - Run the dryer empty on a no-heat or air-only cycle for 2–3 minutes. Listen for unusual noises and confirm the drum turns smoothly and with normal speed. Safety note: Always unplug the dryer and turn off the gas supply before starting. If you smell gas after reassembly on a gas dryer, stop, turn off gas, ventilate, and call a technician or gas company.
Common Symptoms
Drum doesn't turn, motor hums but no rotation, squealing or scraping noises, visible frayed or snapped belt.
Common Causes
- Worn, stretched, or snapped drum belt
- Faulty/ seized idler pulley or drum rollers causing extra wear
- Belt came off the drum due to improper routing or missing tension
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
Before disassembly, try turning the drum by hand—if it spins freely or you see shredded belt pieces inside the cabinet, the belt is almost certainly the issue.
Frequently Asked Questions
How long does replacing a dryer belt take?
For most DIYers it's a 20–45 minute job if you have the right belt and basic tools. Time increases if you need to replace rollers or the idler pulley too.
Can I reuse my old dryer belt?
No. If the belt is worn, frayed, or stretched it's best to replace it. Reusing a damaged belt risks another failure and may damage other components.
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