What You Need to Know Before Starting
The drum belt on a Whirlpool dryer typically lasts between three and seven years, depending on how often you run the machine. When it breaks, the drum stops turning even though the motor still runs. You will hear the motor but see the drum sitting still. Replacing it yourself costs between $30 and $80 for the belt alone, versus $200 to $400 if you call a repair technician.
The job takes one to two hours for someone doing it for the first time. You will need a screwdriver (usually Phillips), a socket wrench or nut driver, and possibly a putty knife or flathead screwdriver to pry trim pieces. The belt itself is a rubber loop that wraps around the drum and connects to a pulley and idler wheel. When any of these three parts wear out, the belt slips or breaks.
Before you order a replacement belt, check your dryer's model number. It is usually on a sticker inside the door frame or on the back of the unit. Whirlpool dryers come in different sizes and configurations, and the wrong belt will not fit. Search your model number plus "belt" to find the exact part you need.
Key Takeaways
- The drum belt wraps around the drum and connects to a pulley and idler wheel; when it breaks, the drum stops turning but the motor still runs.
- You will need a Phillips screwdriver, socket wrench, and the correct replacement belt for your specific model number.
- The front panel or lint trap housing must come off first to access the belt, drum, and pulley assembly.
- The idler wheel often wears out at the same time as the belt, so inspect it while you have the dryer open and replace it if it is cracked or hard.
- Reassembly is the reverse of disassembly, but take a photo of the belt path before you remove the old one so you install the new belt correctly.
Unplug the Dryer and Remove the Front Panel
Unplug the dryer from the wall outlet before you touch anything inside. This is not optional. Even though the drum does not turn when the belt is broken, the heating element and motor can still run and cause injury.
Open the dryer door and look for screws along the top edge of the front panel, just inside the door opening. Most Whirlpool dryers have two screws here. Remove them with a Phillips screwdriver. Next, look at the bottom of the front panel where it meets the base. There are usually two more screws or clips here. Remove those as well.
Once the screws are out, gently pull the front panel toward you. It may be tight because of the felt seal around the drum opening. Work it out slowly and set it aside in a safe place. You now have access to the drum, belt, pulley, and idler wheel.
Take a Photo and Remove the Old Belt
Before you touch anything, take a clear photo of how the belt sits on the drum, pulley, and idler wheel. The belt path matters, and a photo is faster and more reliable than trying to remember or sketch it later.
The belt loops around the outside of the drum and then down and around the idler wheel and pulley. To remove it, you will need to lift or move the idler wheel out of the way. The idler wheel is a small wheel held in place by a spring or bracket. Locate it—it is usually on the right side of the drum—and unhook the spring or loosen the bracket so the wheel moves away from the belt. This releases tension and lets you slide the old belt off the drum.
Once the idler wheel is out of the way, pull the belt off the drum and the pulley. The old belt will come out in one piece. While you have the idler wheel exposed, spin it by hand. If it does not spin freely, or if it is cracked or hard, replace it at the same time. A worn idler wheel will wear out your new belt quickly.
Inspect the Pulley and Drum
With the belt off, look at the pulley—the wheel at the bottom of the drum that the belt wraps around. Spin it by hand. It should turn smoothly and quietly. If it is cracked, worn flat on one side, or does not spin, it needs to be replaced. A damaged pulley will shred a new belt.
Check the drum itself for damage. Look inside the drum opening and run your hand along the inside surface. You should not feel any rough spots, cracks, or sharp edges. If the drum is damaged, the belt will wear out again quickly. Drum replacement is a larger job and may not be worth doing at the same time as a belt replacement, depending on the age of the dryer.
If the pulley or drum is damaged, order those parts now along with your belt. If everything looks good, you are ready to install the new belt.
Install the New Belt
Take the new belt out of the box and hold it up to the light. You will see a groove or ribbed pattern on the inside surface. This groove must face the drum. The smooth side of the belt faces outward.
Start by wrapping the belt around the drum. Pull it tight and make sure it sits evenly all the way around. The belt should not bunch or twist. Once the drum is wrapped, guide the belt down and around the pulley at the bottom. The belt should sit in the groove of the pulley, not on top of it.
Now move the idler wheel back into place and re-engage the spring or bracket. The idler wheel should press against the belt with firm tension. If the spring is weak or the bracket is loose, the belt will slip. Make sure the idler wheel is seated correctly before you move on.
Reassemble the Front Panel and Test
Before you close up the dryer, rotate the drum by hand a few times. It should turn smoothly and the belt should not slip or make noise. If it feels rough or the drum does not turn, stop and check your belt path against the photo you took earlier.
Once the drum turns freely, slide the front panel back into place. Line up the screw holes at the top and bottom and insert all four screws. Tighten them snugly but do not over-tighten, as you can crack the plastic.
Close the dryer door and plug the unit back in. Run a test cycle with no clothes inside. Listen for unusual noises and watch to make sure the drum turns. If the drum turns smoothly and quietly, the belt is installed correctly. If you hear squeaking, grinding, or the drum does not turn, unplug the dryer and recheck your work.
When to Replace the Idler Wheel and Pulley at the Same Time
The idler wheel and pulley wear out together with the belt because they all work as one system. If the idler wheel is cracked, hard, or does not spin freely, replace it when you replace the belt. A worn idler wheel will cause the new belt to slip and wear out in a few months.
The pulley is less likely to fail, but if it is visibly damaged or does not spin smoothly, replace it too. Buying all three parts at once costs more upfront but saves you from opening the dryer again in a few months. Most repair kits sold online include the belt, idler wheel, and sometimes the pulley together for this reason.
Frequently Asked Questions
How do I know if the belt is actually broken?
If the drum does not turn when you start the dryer but you hear the motor running, the belt is broken or slipped off. You may also hear a squeaking or grinding sound before it breaks completely. Open the dryer door and try to turn the drum by hand. If it does not move at all, the belt is the problem.
Can I replace just the belt, or do I have to replace the idler wheel too?
You can replace just the belt if the idler wheel spins freely and is not cracked. However, if the idler wheel is worn, it will wear out the new belt quickly. Inspect it while you have the dryer open. If it is hard, cracked, or does not spin, replace it at the same time.
What if the drum still does not turn after I install the new belt?
Check that the belt is wrapped around the drum correctly and that the idler wheel is pressing against it with firm tension. Make sure the belt is sitting in the groove of the pulley, not on top of it. If the drum still does not turn, the pulley may be damaged or the motor may have failed. A damaged pulley requires replacement.
How long does a new belt last?
A new belt typically lasts three to seven years, depending on how often you use the dryer and whether the idler wheel and pulley are in good condition. If you replace a worn idler wheel at the same time, the belt will last longer because the idler wheel will not drag on it.
Do I need any special tools?
You need a Phillips screwdriver, a socket wrench or nut driver (usually 1/4 inch), and possibly a flathead screwdriver or putty knife to pry trim pieces. Most people have these tools at home. You do not need a multimeter, special belt tool, or professional equipment.