How to replace water tank MJM61904702 on an LG refrigerator

Are you struggling with a sluggish or leaky water dispenser in your LG refrigerator? A cracked water tank might be the culprit, but don’t worry—this DIY guide will walk you through replacing it easily. Watch the how-to video below and get your water dispenser working like new again!

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If you notice issues with your LG refrigerator’s water dispenser, such as reduced water flow or leaks, the problem may lie with a faulty water tank, MJM61904702. This important part is essentially a long coil of tubing that holds and chills water before sending it to the dispenser. Over time, the plastic can crack and split, causing leaks and water flow problems. Replacing the worn-out water tank is a straightforward repair that will restore your dispenser. We’ll go step-by-step through the process of removing the old water tank and installing a new replacement. 

How To: LG/Kenmore Refrigerator Water Tank MJM61904702

The information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer’s documentation or contact us with any questions.

Tools and Parts Needed

Gather the following tools and supplies before beginning:

• Phillips head screwdriver
• 1/2″ open-end wrench
• Utility knife
• Replacement water tank (MJM61904702)
• Towels

Make sure to switch off the power and water supply to the refrigerator. Have some towels ready to catch any drips or spills during the repair.

Removing the Old Water Tank

With the refrigerator powered down and the water supply turned off, we can start dismantling:

1. Open both refrigerator doors and place a wooden block underneath to lift slightly.
2. Slide down the water line clip and detach the blue and white tubing from the connectors using a 1/2″ open-end wrench to loosen.
3. Carefully lower the refrigerator and pull it out to access the back.
4. Remove the water supply line from the household connection.
5. Take out the four Phillips screws securing the rear panel.
6. Lift off the panel to access the internal water connections.
7. Remove the screws anchoring the water lines and valve bracket.
8. Detach the plug by pressing the release tab and pulling it down.
9. Use a wrench to loosen the inlet fitting and detach the water line from the valve.
10. Take off the retaining clip from the valve inlet port.
11. Press down the release collar and detach the water line from the valve.
12. Pull the valve assembly out from the refrigerator cabinet.
13. Remove the single Phillips screw securing the front cover panel.
14. Pull off the panel to access the water tank.
15. Take out all shelves and drawers to clear space around the tank.
16. Lift the flapper door on the bottom shelf and slide out.

Installing the New Water Tank

With all connectors and lines detached, you can now install the new replacement tank:

1. Cut the insulation binding the new tank’s lines using a utility knife.
2. Wrap insulation around the feed line to block openings.
3. Shorten tubing if necessary to avoid kinks.
4. Match up screw holes and secure the tank with Phillips screws.
5. Feed the outlet line through the rear cabinet hole.
6. Push the water line firmly into the valve inlet port until fully seated.
7. Reattach the locking clip to secure the connection.
8. Plug-in valve electrical connector.
9. Attach valve assembly back to refrigerator cabinet with screws.
10. Connect the valve outlet line to the cabinet port and secure it with a clip.
11. Anchor all water lines neatly with brackets and screws.
12. Reinstall the rear access panel, front cover, shelves, and drawers.
13. Replace food items and slide the refrigerator back into position.

Finishing Steps

To complete the repair:

1. Reconnect the water supply line and turn on the water.
2. Plug in the refrigerator and switch on power.
3. Verify there are no leaks and that water dispenses normally.
4. Allow several hours for chilled water to flow to the dispenser.

Where To Find Us 

If you need any replacement parts for your appliances, you can enter your model number at AppliancePartsPros.com to locate and order them quickly. Most orders arrive in just two business days, and we have tons of great information in our repair help section and YouTube videos to help you troubleshoot.

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