Maytag Dryer Drum Not Turning — Belt, Motor, Idler Pulley Diagnosis (MED/MGD Series)

Common Symptoms

• Motor hums or runs normally but the drum does not rotate
• Loud bang or thump heard just before drum stopped turning
• Drum is easy to spin freely by hand with the door open (indicates broken belt)
• Clothes come out hot but completely damp — drum was stationary the whole cycle
• Squealing or grinding noise before drum stopped — roller or bearing failure
• Dryer starts, runs briefly, then shuts off — motor thermal overload tripping

Most Likely Causes

1. 1

   Broken Drive Belt (WP661570) — Most Common

   The drive belt WP661570 is a long, thin ribbed belt that wraps around the drum, over the idler pulley, and around the motor pulley. When it snaps, the motor runs freely but the drum stays still. A broken belt is confirmed by opening the dryer door and trying to spin the drum by hand — if it spins with almost no resistance, the belt is broken. The belt typically lasts 8–12 years; overloading the dryer or running with a seized idler pulley or roller dramatically shortens belt life.

2. 2

   Seized or Worn Idler Pulley (WP691366)

   The idler pulley WP691366 maintains tension on the drive belt and keeps it from slipping. When the pulley bearing wears out or seizes, it either shreds the belt (causing the belt failure above) or creates a loud squealing noise under load. A seized idler pulley makes the motor work much harder and can trip the motor thermal overload. Test by reaching inside the drum opening after removing the front panel — press down on the idler pulley arm with the belt removed and confirm the pulley spins freely and smoothly.

3. 3

   Worn Drum Support Rollers (WP349241)

   Maytag dryers use two drum support rollers at the rear (and sometimes two at the front) to support the drum as it spins. Worn rollers cause a thumping or rumbling noise and eventually make the drum hard to rotate. A severely worn roller can cause the drum to sag and drag against the drum housing, stalling the motor. Remove the drum and inspect each roller — worn rollers show flat spots, cracked rubber, or the shaft has become rough. Replace all rollers as a set even if only one looks bad.

4. 4

   Failed Drive Motor (WP279787)

   The drive motor WP279787 powers both the drum (via the drive belt) and the blower wheel. Motor failure is indicated when the motor hums but does not turn at all (start winding failure or seized bearings), or when the motor trips its thermal overload protector repeatedly. Before condemning the motor, confirm the belt, idler pulley, and rollers are all free — a seized mechanical component forces the motor to stall under load and appears as a motor failure. Test the motor windings with a multimeter: the start and run windings should show resistance, not OL.

5. 5

   Blower Wheel Obstruction

   The blower wheel mounts directly to the drive motor shaft on Maytag dryers. If a sock, dryer sheet, or lint mass gets lodged between the blower wheel and the housing, it can lock the motor shaft and prevent both the blower and drum from rotating. Access the blower wheel through the front panel after removing the drum. Spin the blower wheel by hand — it should spin freely without wobble. Obstructions or a cracked blower wheel that has shifted on the shaft will prevent rotation.

Quick DIY Checks

1. 1Confirm belt failure vs. motor failure: open the dryer door and try to rotate the drum by hand. If the drum spins very freely with almost no resistance — the belt is broken. If the drum is hard or impossible to rotate by hand, a roller, bearing, or blower obstruction is causing drag. If the drum spins with moderate resistance (normal friction), the belt is intact and the motor may have failed or the motor thermal overload may have tripped — unplug the dryer for 30 minutes and try again (thermal overload resets on cool-down).
2. 2Unplug the dryer and access the interior: on most Maytag MED/MGD front-load-style dryers, remove the front panel by releasing the two spring clips at the top of the door panel (insert a flat screwdriver into the slots just below the top panel) or by removing the screws around the door opening. Once the front panel is removed, the drum, belt, idler pulley, and rollers are visible. Lay a towel on the floor to protect the front panel when you set it aside.
3. 3Inspect the drive belt (WP661570): with the front panel off, look for the drive belt draped loosely inside the drum housing or coiled at the bottom — a broken belt will have fallen off. If the belt is still on the drum but appears frayed, cracked, or glazed, replace it. To install a new belt: route it around the drum (ribbed side against the drum), then thread it under the idler pulley and around the motor pulley using the Z-path routing — pull the idler pulley arm toward the motor pulley to create slack, slip the belt over the motor pulley, then release the arm.

1. 4Inspect and test the idler pulley (WP691366): with the belt removed, press on the idler pulley by hand and spin it. A good idler pulley spins smoothly and quietly. A worn pulley will wobble, squeal, or feel rough. Check the pivot arm for cracks or worn pivot points. If the pulley doesn't spin freely or shows visible wear, replace it. Since the belt is already off, it's good practice to replace both the belt and idler pulley as a set — they typically fail around the same mileage.
2. 5Inspect the drum support rollers (WP349241): reach inside the drum opening and locate the two rear drum rollers (small rubber wheels on shafts at the rear of the drum housing). Spin each roller by hand — it should spin freely and smoothly. Remove the drum by lifting the front edge off the drum glides and sliding it forward to clear the rear rollers. Inspect each roller for flat spots, cracked rubber, or a rough shaft. Replace all rollers as a set. Also inspect the felt drum seal around the front drum opening — worn felt causes drum drag and heat loss.
3. 6Check the blower wheel for obstructions: with the drum removed, locate the blower wheel mounted on the motor shaft at the rear right of the cabinet (access by reaching past the motor or removing the back panel on some models). Spin the blower wheel by hand — it should rotate freely and be firmly attached to the motor shaft. Check inside the blower housing for sock lint clogs. Remove any obstruction with needle-nose pliers. If the blower wheel is cracked or wobbling, replace it.
4. 7Reassemble and test: reinstall the drum on the rear rollers, reinstall the belt with correct Z-path routing, reinstall the front panel, and reconnect the door switch wiring harness. Plug in the dryer and run a 10-minute air-fluff (no heat) cycle. Stand beside the dryer and listen for normal tumbling — the drum should rotate steadily without squealing, thumping, or vibration. If squealing persists, recheck idler pulley tension. If the drum still doesn't rotate, the drive motor WP279787 may need replacement.

Repair vs Replace

Recommended Tools & Parts

• Maytag Dryer Drive Belt (WP661570)

  Replacement drive belt for Maytag MED and MGD electric and gas dryers. WP661570 fits MED5630HW, MGD5630HW, MED6230HW, MGD6630HW, and many related models. Ribbed belt routes around the drum, under the idler pulley, and over the motor pulley. Replace whenever belt is frayed, glazed, or snapped.

  $12–$20

  Buy on Amazon →

• Maytag Dryer Idler Pulley (WP691366)

  Replacement idler pulley and tensioner arm for Maytag MED/MGD dryers. WP691366 maintains belt tension and transfers power from motor to drum. Replace when pulley is rough, squealing, or wobbling. Best replaced with the drive belt as a set.

  $15–$25

  Buy on Amazon →

• Maytag Dryer Drum Support Rollers (WP349241)

  Replacement drum support rollers for Maytag dryers. WP349241 fits rear drum rollers on MED and MGD series. Replace all rollers as a set when worn, flat-spotted, or causing thumping. Includes shaft and retaining clip on most kits.

  $20–$40

  Buy on Amazon →

• Maytag Dryer Drive Motor (WP279787)

  Replacement drive motor for Maytag electric and gas dryers. WP279787 powers both the drum and the blower. Replace only after confirming belt, idler, and rollers are not causing motor stall. Test motor windings with a multimeter before ordering.

  $60–$120

  Buy on Amazon →

Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

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