Maytag Drive Belt‑Isolator Kit (MAH5500BWW) — What Part Fixes This Problem?
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Understanding the Problem
What this kit is and what it fixes: The Maytag Genuine OEM Drive Belt‑Isolator Kit (MAH5500BWW) contains the drive belt and the isolation component(s) used on belt‑driven Maytag top‑load washers. It solves problems caused by a worn, stretched, broken or misaligned drive belt and by failing isolators that let the tub contact the cabinet or create excessive vibration/noise. Step‑by‑step diagnostic and repair steps: 1) Confirm the symptom: Run a short drain/spin cycle and listen/feel. Common symptoms are squealing, grinding, washer won't agitate or spin, or strong vibration during spin. Note exactly when the symptom occurs (start, during spin, during agitate). 2) Unplug and prepare: Unplug the washer or switch off the breaker. Move washer away from wall to access the back (or top, depending on model). Have basic tools ready: socket set, nut drivers, flat & Phillips screwdrivers, putty knife, work light, replacement kit. 3) Visual inspection: Remove the back access panel (or tilt the washer per model instructions). Inspect the drive belt for cracks, glazing, fraying, missing chunks or slack. Inspect isolators/bumpers for cracks, flattening, missing rubber, or separation from mounting points. 4) Manual test of belt: With power off, rotate the tub by hand (through the agitator or tub). Observe belt tension and track on pulleys. A good belt should be snug and track centered on pulleys. Excessive slack or slipping under hand force indicates a bad belt. 5) Check motor and pulleys: Inspect motor pulley and transmission pulley for wear, gouges or play. If pulleys are damaged, replacement beyond the belt kit may be needed. 6) Remove old components: If belt and/or isolator are bad, remove the old belt (usually by slipping it off the motor pulley and transmission/drive pulley). Remove and replace isolators or bumpers per model location (top mount, tub mount or underside). Keep track of any shims or mounting hardware. 7) Install new isolators: Fit the new isolation bumpers/isolators into their mounting holes and secure with provided hardware or OEM screws. Ensure they seat fully and evenly so the tub is supported correctly. 8) Install the new belt: Route the new belt over the transmission/drive pulley and motor pulley per the original path. Ensure proper tension—belt should be snug but not overly tight. If your model uses a belt tensioner or idler, ensure it is positioned correctly. 9) Reassemble and test: Reinstall access panels, restore power, run an empty test cycle (spin only and agitate/spin) to verify quiet operation, correct spinning, and no rubbing or excessive vibration. Watch the tub during spin for centering and even rotation. 10) Further action if problem persists: If noise, slipping, or no‑spin continues after replacing the belt and isolators, inspect/replace the motor coupling, transmission, motor bearings, or suspension/shock absorbers as applicable. Persistent misalignment or wobble may point to chassis or bearing failure. Safety note: Always disconnect power before working on the washer. Use correct tools and support the cabinet/tub securely when removing fasteners. If you're unsure about handling the transmission or motor, consult a professional technician.
Common Symptoms
Squealing during spin, washer won't agitate or spin, visible belt damage or slack, banging/vibration during spin, tub rubbing against cabinet or bottom.
Common Causes
- Worn, stretched, glazed, or broken drive belt
- Deteriorated isolation bumpers/isolators allowing tub contact or misalignment
- Worn motor/transmission pulleys or misalignment causing belt slip
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
A quick confirmation: with power off, spin the tub by hand and watch the belt on the motor pulley — visible slipping, glazed belt surface, or a belt that slides off the pulley are surefire signs the belt/isolation needs replacement.
Frequently Asked Questions
How do I know if I need the belt‑isolator kit or the motor coupling/transmission?
If the washer hums but the tub doesn't turn or only slips under load, first inspect the belt and isolators. A broken or worn belt and bad isolators usually show visible damage and allow the tub to wobble or rub. The motor coupling typically fails on direct‑drive machines (plastic couplers) and often results in no movement at all with a humming motor; if the belt and pulleys look good and the motor turns freely but power isn't getting to the transmission, the coupling or transmission may be the issue. Do the visual/manual spin tests first to isolate the faulty component.
Can I install the MAH5500BWW kit myself and how long will it take?
Yes — a homeowner with basic mechanical skills and common tools can usually replace the belt and isolators. Allow about 45–90 minutes depending on access and model. Make sure the washer is unplugged, you have the correct replacement kit for your exact model, and follow the step‑by‑step instructions above. If you find damaged pulleys, bearings, or internal transmission issues, those repairs are more complex and may require a professional.
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