Whirlpool MVWB850YG1 Tub Bearing Failure — What Fixes This Problem?
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Understanding the Problem
Brief explanation: The tub bearing (and its seal) supports the inner tub on the drive shaft and allows it to spin smoothly. On the Whirlpool MVWB850YG1, a failed bearing or seal leads to loud grinding/rumbling in spin, excessive play/wobble of the tub, and often water leaking into the bearing area — which quickly destroys the bearing. Step-by-step diagnostic and repair instructions: 1) Confirm symptoms: - Run a short spin-only cycle (empty washer) and listen: grinding, rumbling, or metallic screeching during spin strongly suggests bearing failure. - With the lid off and machine off, manually push/pull the inner tub radially and try to rock it; more than about 1/4" of play or noticeable roughness when turning by hand indicates bad bearings. - Check the floor under the washer for oil/water mixture and look for rust on the base — leaks at the tub seal commonly accompany bearing failure. 2) Gather tools and parts: - Tools: multimeter, socket set, screwdrivers, nut drivers, putty knife, bearing puller or slide hammer, hydraulic or arbor press (or bearing driver set), rubber mallet, snap-ring pliers, torque wrench, penetrating oil, shop rags. - Parts: tub bearing kit (bearing + seal + race), tub seal, drive shaft (inspect and replace if scored), hub/pulley if damaged, new bolts/clips as needed. Order a kit that specifically lists fit for MVWB850YG1. 3) Safety and preparation: - Unplug the washer and shut off water supply. Move washer away from wall onto a padded surface. Drain remaining water: run drain/pump or manually siphon. 4) Access the tub and inner assembly: - Remove the washer top or control console per Whirlpool instructions (usually release clips behind console and tilt forward). Remove lid, agitator/impeller and fabric softener dispenser if required. - Disconnect hoses and electrical connectors needed to free the cabinet and separate it from the top and back. Remove the front/back panels as required to access the tub mounting points. 5) Remove the inner tub (or gain access to the bearing area): - Remove the drive pulley and any retaining collars or snap rings on the drive shaft. On many MVWB series machines you will need to separate the outer tub halves or remove the inner tub from the shaft to press out the bearing. - Document bolt locations and harness routing for reassembly. 6) Remove the old bearing and seal: - Use a bearing puller or slide hammer to remove the bearing race and seal. In many cases the bearing is pressed into the outer tub and will require a press or driver to remove cleanly. - Clean the housing thoroughly; inspect the drive shaft for scoring or pitting. If shaft is damaged, replace or have it machined/replaced — installing a new bearing on a damaged shaft will cause rapid failure. 7) Install the new bearing and seal: - Use a bearing driver or arbor press and apply even force to the outer race only. Do not hammer on the inner race; that will damage the bearing. - Install the new tub seal with the correct orientation (lip toward water). Use a seal driver or a socket that matches outer diameter and gently press it squarely into the bore. - Lightly lubricate the new seal lip with a small amount of silicone grease if manufacturer recommends. 8) Reassemble tub and drive components: - Reinstall inner tub, shaft collars, pulley, and tightness per torque specs. Replace any worn hub or suspension parts while accessible (shocks, suspension rods, dampers) — these are cheap insurance against repeat problems. 9) Test before full reassembly: - Reconnect power, run a short spin cycle with the washer empty and watch for abnormal noise, leaks, or wobble. If all good, reassemble panels and console. 10) Final checks: - Check for leaks around the base after several test cycles. Verify tub runs true without excessive vibration. 11) When to replace additional parts: - If you found water in the bottom base, replace the tub seal, bearing race, and consider a new drive shaft or hub. Replace suspension/shock absorbers if they are worn to prevent future stress on the new bearing. 12) Safety note: - Bearing replacement is a moderate-to-advanced repair that often requires a bearing press or shop access to properly remove and install press-fit bearings and seals. If you do not have proper tools or are uncomfortable splitting the tub or pressing bearings, get the job done at a repair shop to avoid damaging the new parts or the tub.
Common Symptoms
Loud grinding/rumbling during spin, excessive tub wobble/play, water leaking from the washer base, grease or rusty water on the floor, burning smell from friction.
Common Causes
- Worn or corroded tub bearing (outer race or rollers)
- Failed tub seal allowing water to enter and damage bearing
- Scored or bent drive shaft rubbing on the bearing or seal
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Helpful Repair Tip
Confirm the bearing by lifting the inner tub slightly and spinning it by hand: a rough grind or metallic scraping, or visible lateral movement (>1/4") means the bearing or shaft seal is bad.
Frequently Asked Questions
How much does it cost to replace the tub bearing on an MVWB850YG1?
Costs vary: parts (bearing/seal kit) typically run between $40–$150 depending on OEM vs aftermarket. If you hire a technician, labor adds roughly $200–$400 depending on local rates and complexity. Total shop cost commonly ranges $250–$550. Replacing related parts (shaft, hub, shocks) increases cost.
Can I replace the tub bearing myself or do I need special tools?
You can replace it yourself if you are comfortable disassembling the washer and have the right tools. Key tools: bearing puller or slide hammer, hydraulic/arbor press or bearing driver set (to press bearings and seals), snap-ring pliers, and torque tools. Without a press it's difficult to install the bearing correctly and easy to damage the new part or tub; if you lack these tools, a shop is recommended.
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