Washer Won't Spin or Agitate? Gearcase W11449840 – Fix Transmission Failure Fast

A washer that won't spin, won't agitate, makes grinding or clunking noises during the spin cycle, or repeatedly throws the drive belt is almost always a failed gearcase (transmission). In Whirlpool-platform top-load washers, the gearcase converts motor power into controlled agitator oscillation and high-speed basket spin — when it fails due to gear wear, bearing seizure, or seal failure, the washer loses one or both mechanical functions entirely. ⚡ High-wear component in Whirlpool, Maytag, and Amana top-load washers in the WTW5100, WTW5105, WTW6120, MVW6200, and MVW6230 series. Part W11449840 is the genuine OEM replacement gearcase assembly that restores full agitation and spin performance and directly supersedes W11164183 and W11423758 — no modification required.

Model-specific repair guides: WTW5010LW0, WTW5015LW0, WTW5057LW0, WTW5100HC0, WTW5100HC1, WTW5100HC2, WTW5100HW0, WTW5100HW1, WTW5100HW2, WTW5105HC0, WTW5105HC1, WTW5105HC2, WTW5105HW0, WTW5105HW1, WTW5105HW2, WTW6120HC0, WTW6120HC1, WTW6120HC2, WTW6120HW0, WTW6120HW1, WTW6120HW2, MVW6200KW0, MVW6200KW1, MVW6200KW2, MVW6230HC0, MVW6230HC1, MVW6230HC2, MVW6230HW0, MVW6230HW1, MVW6230HW2, MVW6230RHW0, MVW6230RHW1, MVW6230RHW2, CAW45125LW0

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ Your washer powers on and the control panel responds normally
• ✔ The motor runs (you can hear it) but agitation or spin is absent or erratic
• ✔ Drive belt and motor coupling have been inspected and ruled out
• ✔ No error codes pointing to a motor or control board fault
• ✔ ONLY problem is no agitation, no spin, grinding/clunking noise, drive belt repeatedly breaking, or basket not moving

Not sure? Send us your model number — we'll confirm before you order.

🔧 Common Symptoms

• Washer won't spin — basket stays heavy with water after cycle — most common complaint
• Washer won't agitate — drum sits still during wash cycle
• Loud grinding, banging, or clunking during spin cycle
• Drive belt slips off or repeatedly breaks
• Agitator moves slowly or inconsistently instead of full oscillation
• Washer runs but drum doesn't move at all

✔ If these symptoms match, the gearcase is the most likely failed component in the drive system.

✔ In most cases, replacing the gearcase with W11449840 restores full agitation and spin performance immediately.

📦 Part Details

• Part Number: W11449840
• Type: Genuine OEM Whirlpool Top-Load Washer Gearcase (Transmission) Assembly — includes internal gears, bearings, seals, and output shaft
• Replaces: OEM direct-fit gearcase — supersedes W11164183, W11423758 (no modification required)
• Brands: Whirlpool, Maytag, Amana

⚙️ Installation

Skill Level: ADVANCED — Allow 2–3 hours. Disconnect power and shut off the water supply before beginning any work. Gearcase replacement requires removing the drive belt, motor pulley, and linked pulleys before unbolting the gearcase from the drive shaft — photograph all connections during disassembly. Install the new W11449840, tighten fasteners evenly, confirm the output shaft aligns correctly, and reinstall the belt with proper tension. Professional installation is recommended due to the number of components involved.

💡 Pro Tip