How to Replace 40045001 Washer Idler Pulley Wheel on Whirlpool & Maytag Washers — Step-by-Step

Your Maytag SAV2655AWW starts making a grinding noise during the spin cycle, then suddenly stops spinning altogether. You open the cabinet and find the belt's gone slack — your idler pulley wheel has seized. This $15 part fails more often than most people realize, and when it does, your washer either won't agitate or spins so slowly it leaves clothes soaking wet.

What You Need Before Starting

This repair takes about 20-30 minutes if you've never done it before. Plan for 10 minutes if you're comfortable working on appliances.

• 1/4" nut driver or socket
• Flathead screwdriver
• Needle-nose pliers (optional, for spring tension)
• Work gloves (those springs bite)
• Shop towel

Difficulty: Easy to Moderate

Time Required: 20-30 minutes

Safety First

Unplug your washer completely before you start. Not just turning it off — actually pull the plug from the wall. The idler pulley sits near the motor and belt system, and you don't want anything moving while your hands are in there. If your washer's been running, give it 10 minutes to cool down. That drum can hold heat longer than you'd think.

Step 1: Access the Cabinet and Locate the Pulley

You'll need to remove either the front panel or tip the washer back to access the bottom, depending on your model. Most Amana ALW-series and Maytag SAV-series washers let you access from the front. Remove the screws securing the lower front panel — usually two at the bottom corners and sometimes clips at the top. The idler pulley sits on a spring-loaded arm near the motor, keeping tension on the drive belt.

Step 2: Release Belt Tension

Here's where people struggle. The idler arm is under spring tension, so you can't just pull the belt off. Push the idler arm toward the motor to create slack in the belt, then slip the belt off the motor pulley first. Once that's free, you can work the belt off the idler pulley wheel. Some models like the Crosley variants have a really stiff spring — use pliers if your fingers aren't getting enough leverage.

Step 3: Remove the Failed Idler Pulley

The pulley wheel mounts to the idler arm with a single bolt or clip. On most Whirlpool-manufactured washers (which includes Maytag, Amana, and Crosley), it's a 1/4" hex bolt. Remove it, slide off the old pulley, and check the mounting bracket. If there's belt residue or metal shavings, clean it with a shop towel. A seized pulley often leaves black dust everywhere.

Step 4: Install the New 40045001 Pulley

Slide the new pulley onto the idler arm shaft. Make sure it spins freely before you bolt it down — if it doesn't, you've got a defective part. Tighten the mounting bolt snug but don't overtorque it. The pulley needs to spin on its bearing; you're not welding it in place.

Step 5: Reinstall the Drive Belt

Route the belt around the drum first, then around the idler pulley wheel. Push the idler arm toward the motor again to create slack, then stretch the belt onto the motor pulley. Let the spring pull the idler arm back — you should feel solid tension. Spin the drum by hand a few rotations. The belt should track smoothly without riding up the edges of any pulley.

Testing After Installation

Reattach the cabinet panel and plug in your washer. Run an empty cycle on the highest spin speed setting. Listen for any squealing, grinding, or rattling. The washer should accelerate smoothly into the spin cycle without hesitation. If you hear clicking, the belt might not be seated properly on one of the pulleys — unplug and recheck your work.

Frequently Asked Questions

Why does the idler pulley fail on these washers?

The bearing inside the pulley wheel seizes over time, usually from water exposure or just wear. When it can't spin freely, the belt starts slipping, which creates that burning rubber smell. Eventually the friction heats up the plastic pulley body enough to warp it, and the belt comes off completely. It's a wear part that typically lasts 5-8 years depending on how much laundry you do.

Will this pulley work on both top-load and front-load washers?

The 40045001 is designed for top-load washers with a direct-drive motor system — models like the Amana ALW series and Maytag SAV series. Front-load washers use a completely different belt system and pulley design. Check your model number against the compatibility list. If your washer has the drum mounted vertically, this is likely the right part.

Can I just tighten the belt instead of replacing the pulley?

No. The idler pulley maintains automatic belt tension through the spring-loaded arm — there's no adjustment. If your belt's loose or the washer won't spin, the pulley bearing has failed and the wheel isn't turning with the belt. Tightening won't fix a seized pulley, and running the washer like that will destroy your new belt within a few loads. Replace the pulley first, then check if the belt needs replacing too.