Last Updated on October 5, 2026 by Umar Farooq
A dryer timer replacement is a repair for one specific kind of machine: a dryer with a mechanical timer, which is a small synchronous motor driving a stack of plastic cams that open and close switch contacts as they rotate. If your dryer has a digital display, a sensor dry cycle and buttons rather than a dial you twist, you do not have a timer. You have a control board, and that is a different part entirely.
The myth worth killing first is that a dial which seems not to move means a broken timer. On a sensor cycle, a stationary or jumping indicator is the machine working correctly — the control is re-estimating the finish time as the load dries, so the number can go up as well as down. Dryer timer not advancing runs the test that separates the two in about one minute, and it is the page to read before this one. This page is about buying the part once you know you need it.
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Do you actually have a mechanical timer? Two seconds at the dial
Three checks, in order, and none of them needs a tool.
Does the dial physically rotate while the dryer runs? A mechanical timer’s knob turns, slowly and continuously, because the knob is attached to the cam shaft. Watch it for a minute with a timed cycle selected. If the knob is still after a minute on Timed Dry, something in the timer circuit is wrong. If it has crept round a fraction, it is working.
Can you turn the dial to any position and have the dryer behave accordingly? A mechanical timer is a selector and a clock in one. A machine where the dial is purely a selector, with the cycle length decided by electronics, is not a timer machine.
Is there a display? This is the quickest tell. Timer-controlled dryers do not report codes, because there is nothing to report them on. Whirlpool’s entire published dryer code list runs to four codes plus one catch-all — AF or F4E3 for restricted airflow, L2 for low line voltage, PF for a power failure, and the generic “F# E#” meaning the control “has detected a problem that requires service”. If your machine shows any of those, it has electronics, and dryer control board is the relevant page. If it shows nothing because there is nowhere for it to show anything, you are in the right place.
One honest note on which cycle you should be testing with. GE recommends using a timed dry cycle for small loads specifically — “If less than 5 items are to be dried, a timed dry cycle should be used for best results” — which is a reminder that Timed Dry is not a legacy setting. It is the right choice for some loads on any machine.
A dryer timer replacement is a clockwork repair on a dying design
It is worth being straight about what this part is, because the honest framing changes what you decide.
A mechanical timer is a piece of clockwork. A small synchronous motor, geared right down, turns a shaft carrying a stack of moulded cams. Each cam has a profile — lobes and flats cut into its edge — and each one rides against a spring contact. As the stack rotates, the lobes push contacts closed and let them open. One set switches the drive motor. One switches the heater. One handles the cool-down at the end of the cycle. The cycle you selected is literally carved into plastic.
It is a beautiful piece of engineering and it is on its way out. Manufacturers moved to electronic control because a board can take a reading from a moisture sensor and stop when the clothes are dry, rather than running for a fixed interval whether they are dry or not. A timer machine cannot do that, which is both its charm and the reason it is being replaced.
That matters for the purchase in two ways. First, the supply of timers is finite and shrinking, and the listings that remain are increasingly non-OEM equivalents rather than original parts. Second, a dryer with a mechanical timer is, with one exception, an old dryer — and the age of the machine is a legitimate part of the decision rather than a footnote.
The exception is worth naming because it changes the calculation entirely. Speed Queen still builds domestic dryers around a mechanical timer, which means a Speed Queen timer is a current part for a current machine rather than a legacy part for an old one. If that is what you have, the age argument below does not apply to you in the same way.
Inside the can: a motor, a cam stack and a row of contacts
Knowing the three parts inside the housing tells you which one probably failed, and that is worth knowing before you order the whole assembly.
The timer motor is the little synchronous motor bolted to the side or back of the timer body. It runs on mains and turns the cam shaft through a gear train. When it fails, the dial stops dead and the cycle never advances — the dryer will often keep running whatever stage it was on, indefinitely, because nothing is moving the cams to the off position. On many models the timer motor is catalogued as a separate part from the timer assembly, and it is frequently the component that actually failed. Check whether yours is available on its own before you order the whole thing.
The cam stack is the plastic drum of profiles. It rarely fails, but it can crack at the shaft or strip where the knob engages. A knob that spins freely without changing anything is usually the knob’s D-shaped broach rounded out, or the shaft, rather than the timer.
The contacts are the part that genuinely wears out. They are switching a motor and, on many designs, a heater circuit, thousands of times over the machine’s life. Contacts pit, carbon up and eventually stop making reliably. The classic symptom is a machine that works on some dial positions and not others, or one that runs but never heats while the heat position is selected.
Matching those three to what your dryer is doing is most of the diagnosis:
- Dial does not move, dryer runs forever. Timer motor.
- Dial moves, machine dead at one setting only. Contacts.
- Knob spins with no effect at all. Knob or shaft, not the timer.
- Dryer will not start from any position. Look at the door switch and the start switch first — dryer won’t turn on runs those three stages before any part is bought.
The cam profile is why a timer is the most model-locked part in the machine
Every part on a dryer is model-specific. The timer is the extreme case, and the reason is worth understanding because it rules out every shortcut.
The cam profiles are the cycle. The length of each stage, the order they run in, how long the cool-down lasts, which contacts close at which point — all of that is physically cut into the plastic. Two dryers from the same factory in the same year, one sold as a four-cycle machine and one as a six-cycle machine, have the same cabinet, the same drum, the same motor and completely different timers. There is no adjustment, no programming and no “close enough”.
So there are exactly two things that identify the right part. The number printed on the body of your existing timer, which is authoritative, and the model number on your machine, which is the fallback. Whirlpool documents the plate as inside the dryer door, on the rim of the opening on a standard dryer, on the inside of the dryer door on a stacked laundry centre, and on the storage drawer on a pedestal unit. Photograph both the plate and the timer body before anything comes apart.
Two more habits that make this job survivable. Photograph the wiring at the timer before you pull a single terminal — a dryer timer can carry a dozen spade connectors in a cluster and they are not keyed. And count the terminals on your old timer against the photographs of the new one, because a timer with the right part number and a different terminal count is a listing error you want to catch before the console is back on.
The Kenmore rule applies with particular force here, because Kenmore sold more timer-era dryers than almost anyone: 110 is a Whirlpool machine, 796 is LG, 417 is Frigidaire, 402 is Samsung. Read the first three digits.
Four timers, three platforms, and one that is NON-OEM by its own description
Four timers, each tied to a specific model list. There is no overlap between them and no universal option, because for this part there cannot be one.
Whirlpool WP3976584: the Whirlpool-platform OEM timer
Whirlpool’s own authorised timer. The listing names the models it fits individually rather than describing a family — 7MLGR4634JQ4, 7MLGR4634JT3, 7MLGR4634PQ0 and 7MLGR4634PT0 — which is the right level of specificity for a part whose cams encode the cycle.
Which machines it covers: exactly those models and the others the catalogue lists against WP3976584. If your model number is not on the list, check the number on your old timer body before assuming it is a near relative.
What it does not do: it will not fit the 8299779 machines below, despite both being Whirlpool-platform timers from the same era. It also does not come with a knob on most listings, so keep your old one. This listing shows limited stock at the time of writing.
Whirlpool 8299779: the other Whirlpool timer, and its supersessions
The second current Whirlpool-platform timer assembly, and the clearest demonstration that one brand does not mean one part. It replaces 909730, AH394432, EA394432 and PS394432 — a completely different chain from the timer above.
Which machines it covers: the listing names Maytag MEDC400VW, Amana NED4500VQ0 and Whirlpool WED5321SQ0, plus Kenmore 110.60522900, 110.62602101 and 110.64212201. That mix of badges across one part number is the platform rule made visible: Whirlpool, Maytag, Amana and Kenmore 110 are the same machine with four names on the front.
What it does not do: there is no reliable way to tell these two Whirlpool timers apart from a listing photograph. Order against the number on your own timer body. This one is also showing limited availability.
GSPUSA TMD1CM33 for Hotpoint and GE: the one that says NON-OEM itself
This is an aftermarket equivalent and the listing says so in its own words: “NON OEM. The new product is made from high-quality material and OEM specifications as a generic replacement.” That honesty is why it is here. An aftermarket timer that tells you it is aftermarket is more useful than one pretending otherwise, and on a machine of this age the original part number — TMD1CM33, also catalogued as 234D2377P007 — is no longer available new.
Which machines it covers: the listing prints a real model list, which is what you want. HTX24EASK0WW, HTX24GASK0WW, HTX24EASK0WS, HTX24GASK0WS, NTX62G8ST0WW, NTX62E8ST0WW, HTX21GASK1WW, GTD38GASW0WS, GTX38GASW0WS, HTX24EASK1WS and NTX62E8ST1WW among others, with the seller stating it fits both old and new serial ranges for those models.
What it does not do: it is a generic equivalent rather than a GE part, so judge it on the model list and the original number it replaces rather than on a brand. Check your terminal count against the photographs before fitting. Currently showing limited stock.
D517559 for Speed Queen: a current part, not a legacy one
The Speed Queen timer, and the one on this page where the age argument runs differently. Speed Queen still builds machines around mechanical control, so this is a replacement part for a current design rather than a scarce part for a machine on its way out. The listing describes it as a high-quality equivalent for D517559, AP7000757, 4962062 and PS17001218.
Which machines it covers: Speed Queen dryers calling for D517559 or any of those three cross-reference numbers. Speed Queen’s own numbering is unusually stable, which makes the cross-reference list more reliable than most.
What it does not do: it is an equivalent rather than an Alliance-branded part, and the listing is generic about compatibility beyond the part numbers — “compatible with Speed Queen dryers” is doing a lot of work in that sentence. Verify against your own timer body. This listing also shows limited stock.
When a timer is not worth replacing at all
This is the section the parts listings will not write, and for several readers it is the whole answer.
A dryer with a mechanical timer is, Speed Queen aside, an old dryer. Consumer Reports advises replacing an appliance more than eight years old rather than repairing it unless it is a high-end model, and the trade’s 50% rule says to replace when a repair costs more than half a comparable new machine. A timer-era dryer is typically well past the first line, and a timer is not the cheapest part in the machine.
The harder question is what else is tired. A dryer old enough to have a mechanical timer has usually also got original rollers, an original belt and an original idler pulley, and replacing the timer buys you a machine that will need those next. Dryer repair cost sets out the two published cost sources and explains why they disagree by a wide margin, and how long should a dryer last gives the federal lifespan figure to measure yours against.
Three cases where replacing the timer is clearly right anyway. A Speed Queen or other commercial-grade machine built to be repaired. A machine that is otherwise in good order with a documented single fault — dial dead, everything else fine. And a situation where a working dryer today matters more than optimising the next ten years, which is a perfectly reasonable position and nobody should pretend otherwise.
One case where it is clearly wrong: a machine whose drum is noisy, whose cabinet is rusting, or which has already had a heater and a fuse this year. The timer is not the last thing it will ask you for.
FAQ
How do I know if my dryer has a mechanical timer?
Select a timed cycle, start the machine and watch the dial for a minute. A mechanical timer’s knob rotates slowly and visibly, because the knob is on the cam shaft. If the knob stays put while a digital display counts down, you have electronic control and the part you want is a control board.
My dial is not moving. Is the timer broken?
Only if you are on a timed cycle. On an automatic or sensor cycle, the indicator is an estimate that the control revises as the load dries, so it can sit still and it can go up. Switch to Timed Dry and watch again — that one test separates the design from the fault.
Can I replace just the timer motor?
On many models, yes. The timer motor is catalogued separately from the timer assembly on a lot of machines, and it is a common failure point — if the dial has stopped dead but the dryer otherwise behaves, check whether the motor alone is available for your part number before ordering the whole assembly.
Will a timer from a similar model fit mine?
Almost certainly not. The cam profiles physically encode the cycle — stage lengths, order, cool-down — so two machines from the same factory in the same year with different cycle counts take different timers. There is no adjustment. Order against the number on your timer body.
Why do new dryers not have timers?
Because a timer runs for a fixed interval whether the clothes are dry or not. Electronic control reads a moisture sensor and stops when the load is actually dry, which uses less energy and is gentler on fabric. Timed Dry survives as a setting on modern machines — GE recommends it for loads of fewer than five items — but the clockwork behind it has gone.
Where is the part number on a dryer timer?
Printed or stickered on the timer body itself, visible once the control console is open. That number beats the model number, because manufacturers revised timers within a model run. Photograph it, and photograph the wiring cluster at the same time.
Weigh the timer against the dryer’s age first
The order: confirm you are on Timed Dry and watch whether the dial rotates. If it does not, open the console, read the number off the timer body and photograph the wiring before touching it. Then find out whether the timer motor is available separately for that number, because it is often the part that failed and it is a smaller job.
If you need the whole assembly, match it to your model list rather than to a photograph. Whirlpool-platform owners have two current timers and only one is theirs. GE and Hotpoint owners are buying an aftermarket equivalent, and the listing that admits it is the one to trust. Speed Queen owners are in the one corner of this market where a mechanical timer is a current part for a machine designed around repair.
And before you order anything, look at the rest of the dryer honestly. A timer is a reasonable repair on a machine with nothing else wrong with it, and that is a narrower category than it sounds.
