LG Washer won't agitate
Quick answer: A washer that fills and drains but never moves the clothes has an agitation problem, and the clothes come out as dirty as they went in. On top loaders the usual culprits are worn agitator dogs or a stripped agitator, a broken motor coupling, a slipping belt, or a failed shift actuator.
- Unplug the washer before reaching under the agitator or removing the cabinet.
- Do not reach into the tub while the machine is running, even if it seems still.
- Support the tub or drum when working on the drive parts underneath.
Why won't my washer agitate?
A washer that fills and drains but never moves the clothes has an agitation problem, and the clothes come out as dirty as they went in. On top loaders the usual culprits are worn agitator dogs or a stripped agitator, a broken motor coupling, a slipping belt, or a failed shift actuator. On front loaders the equivalent symptom is a drum that will not tumble, which points to the belt, motor, or motor control.
Our fitment data covers 331 LG washer models and 1,173 LG washer parts, so the part links below are filtered to this brand; always confirm your model number before ordering.
Most Likely Causes, in Order
1. Worn agitator dogs or cam kit
Dual-action agitators have a top section that ratchets in one direction using small plastic dogs. When the dogs wear smooth, the top of the agitator spins freely both ways and no longer pulls the clothes down.
How to check: Grab the top of the agitator and try turning it both ways by hand. It should ratchet in one direction and lock in the other; if it spins freely both ways, the dogs are worn. Remove the cap and dispenser to lift the top section and inspect the dogs and cam.
Fix: Install a new agitator dog and cam kit. This is an inexpensive repair that takes a few minutes with a socket wrench. (Difficulty: Easy)
No LG part for this cause is in our catalog yet; search by your model number.
2. Broken motor coupling
On direct-drive top loaders a rubber and plastic coupler joins the motor to the transmission. Overloading wears it out, and once it fails the motor runs but the agitator and basket stay still.
How to check: Listen for the motor running during the wash with no movement in the tub. Unplug the washer, remove the cabinet, and pull the motor to inspect the coupler for broken tabs or crumbled rubber.
Fix: Replace the motor coupling. Avoid overloading the washer afterward, since that is what usually shears the coupler. (Difficulty: Moderate)
No LG part for this cause is in our catalog yet; search by your model number.
3. Worn or broken drive belt
Belt-driven washers rely on the belt to turn the transmission or drum. A loose or broken belt lets the motor run without moving anything.
How to check: Unplug the washer, remove the access panel, and inspect the belt for glazing, cracks, or breakage. Try to turn the motor pulley by hand and see whether the drum or transmission follows.
Fix: Replace the belt and verify the pulleys are aligned and tight. (Difficulty: Moderate)
No LG part for this cause is in our catalog yet; search by your model number.
4. Failed shift actuator or mode shifter
High-efficiency top loaders use an actuator under the tub to move the drive between agitate and spin positions. When its motor or sensor fails, the washer may fill and then sit silently, or show a shift error.
How to check: Run the washer diagnostic mode if your model has one and look for a shifter or actuator fault. Otherwise, unplug the machine, tip it back or remove the front panel, and check the actuator for a loose connector or a broken lever.
Fix: Replace the shift actuator. It is typically held by two screws and a connector under the washer. (Difficulty: Moderate)
No LG part for this cause is in our catalog yet; search by your model number.
5. Stripped or broken transmission
The transmission converts motor rotation into the back-and-forth motion of the agitator. Worn internal gears or a sheared agitator shaft leave the basket spinning fine but the agitator idle, sometimes with a grinding noise.
How to check: Confirm the spin works normally and the coupling and belt are intact. Remove the agitator and check whether the drive shaft splines are stripped. Turn the shaft by hand; grinding or free spinning indicates internal damage.
Fix: Replace the transmission. Because of the cost and labor, weigh this against the age of the washer. (Difficulty: Advanced)
No LG part for this cause is in our catalog yet; search by your model number.
Other LG parts the catalog tags for this symptom
- Drum Baffle Assembly AFH72909001 — $81.28 – $86.27 (noisy; rattling; tub off-balance)
- Washer Washplate Cap 5006EA3009B — $15.33 – $51.69 (won't agitate; won't wash)
- LG Washer Outer Rear Tub Assembly AJQ73413811 — $290.65 – $374.55 (noisy)
Popular LG washer models
Confirm the model number on the rating plate before ordering. Each model page lists every compatible part.
Frequently Asked Questions
My washer fills and drains but the clothes do not move. What should I check first?
Try turning the top of the agitator by hand; if it spins freely both ways the agitator dogs are worn, which is the cheapest and most common fix. If the agitator is solid, listen for the motor and check the coupling or belt.
Why does my washer spin but not agitate?
Spin uses the basket drive while agitation uses the transmission or shift actuator. If spin works, the motor and belt are fine and the fault is in the agitator dogs, shift actuator, or transmission.
Does a front-load washer agitate?
No, it tumbles instead. If a front loader fills but the drum does not move, treat it like a no-spin problem and check the belt, motor, rotor sensor, and motor control board.
When to Call a Professional
Call a technician if the agitator shaft is stripped, the transmission grinds, or you are not comfortable removing the cabinet and motor. A transmission replacement on an older washer often costs more than the machine is worth.