If your dryer motor starts humming and you decide to take the machine apart, do yourself a favor: buy the full maintanence kit before you pop the top panel. Don't just swap the motor. Once you slide the front panel off and heave the drum out of the cabinet, you have clear access to the rear support rollers, the idler pulley, and the belt anyway. Replacing them now saves you from doing this entire ordeal twice. Keep a shop vac right next to you while you work. The bottom pan around the gas burner tube and igniter is almost guaranteed to be coated in a solid blanket of lint and loose coins. Clean that entire floor out thoroughly before you mount the new motor so you don't blow baked dust straight into the fresh blower housing. One last thing that tripped me up early on: that plastic blower wheel is ussually reverse-threaded onto the motor shaft. Check the rotation arrow stamped on the plastic before you reef on it with a wrench, or you'll snap the hub right off.
Tips for tearing down an older dryer that nobody talks about
Oct 05, 2026
Last reply: 31 minutes ago
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I did this exact job on my 2008 Whirlpool Duet last November. That reverse-thread warning is spot on. Even knowing it turned clockwise to loosen, the blower wheel on mine was practically fused to the motor shaft after fifteen years of heat cycles. I ended up having to carefully split the plastic hub with a chisel and a mallet just to free the shaft, then ordered a new wheel for twenty bucks.
My only slight disagreement is on the generic rebuild kits. I bought one of those cheap off-brand bundles online that came with the belt, idler, and four rollers. The bearings in those rollers started squealing like a banshee within four months. If you are tearing the cabinet down that far, spend the extra money on OEM rollers with the proper sintered bronze bushings. Also, wipe the roller support shafts down completely dry—don't spray WD-40 or grease on them, or it just turns into a gummy paste with the stray lint.
Before anyone drops cash on a new motor just beacuse of a hum, have you ruled out a simple jam in the blower housing first? Half the time that hum is just a stray sock, bra underwire, or hard lint cake wedged against the wheel vanes. The motor tries to kick over, can't overcome the resistance, and just sits there buzzing until the thermal cutoff trips.
Also, did you check the front drum glides? If you slip the belt off and the drum doesn't spin freely by hand, a brand new motor is going to do the exact same thing.
If you actually need the motor, check the centrifugal switch contacts before tossing the old one. On the classic Whirlpool 279827 motor, carbon build-up on the start contacts will cause that exact hum, and five minutes with some 400-grit sandpaper can save you eighty bucks.
Also, when you loop that 341241 belt back over the idler arm, pay attention to the S-curve. I can't tell you how many folks route it on the wrong side of the 691366 pulley and instantly melt the plastic wheel flat the second the drum starts spinning.
Quick update — wanted to shout out the reply about the centrifugal switch. I hadn't tossed the old motor into scrap yet, so I pulled it apart out of curiosity and hit those blackened contacts with 400-grit sandpaper. Hooked it to a test lead and it fired right up without a hum! Keeping it on the shelf as a working spare now. Appreciate the tip!
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