Whirlpool Dryer Repair & Maintenance Kit 4392065, Replaces 279708, 279709, 279860, 279948

Dryer Repair Kit, Maintenance Kit, Drum Support Kit, Drive System Kit, Drum Roller Kit, Belt and Pulley Kit, Wear Component Kit

279708, 279709, 279860, 279948, 4392065RC

LEV4634JQ1, LEV4634JQ2, LEV4634JT1, LEV4634PQ0, LEV4634PQ1, LGV4634JQ1, LGV4634JQ2, LGV4634JQ3, LGV4634JT1, LGV4634JT2, LGV4634PQ0, MDG20MWTGW1, MED6205RF0, MED6205RR0, MEDB700BW0

Is it worth replacing all the parts in the kit or just the one that's making noise?

Replace everything in the kit. The drum support rollers, idler pulley, and drive belt all wear at similar rates because they're all under constant load and friction every time the dryer runs. If the rollers are thumping, the idler pulley bearing is likely worn and the belt is stretched. Replacing only the thumping rollers means you'll be opening the dryer again in a few months when the pulley starts squealing or the belt breaks. The kit costs less than buying each part individually, and you only need to disassemble the dryer once. One teardown, all parts replaced, and your dryer's drum support and drive system is restored to like-new condition. The repair takes 30–50 minutes either way — whether you replace one part or all four. It's the same disassembly process. The only additional time is snapping in the extra components, which adds about 5 minutes total.

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Whirlpool, Maytag, KitchenAid, Kenmore, Amana, Crosley, Roper (verify by model)