Lfx28978sb100 Parts

Note: 90 degree elbow coupler (Fits 1/4" diameter tubing on each end) For 5/16" elbow connector, order part# 4932JA3009B.

The Water Line Union is an OEM part for LG refrigerators. This component connects sections of the water line, ensuring a secure and leak-free passage of water to the refrigerator's icemaker and water dispenser. It is an elbow tube union connector, which connects two tubes at a 90-degree angle.

Causes of a bad water line union can include wear and tear from frequent use, damage from high water pressure, or deterioration due to mineral buildup and age. A compromised union can lead to water leaks and disruption in the water supply.

Symptoms of a bad Water Line Union include:

• Water leaks around the connection points
• Reduced water flow to the icemaker or water dispenser
• Puddles or moisture near the refrigerator
• Unusual noises from the water line

This OEM LG part is also compatible with Sears/Kenmore.

This sub PCB assembly is an electronic control board used in select LG appliances. It manages signals and low-voltage power for a specific feature or module, helping restore normal operation when the original board becomes unresponsive or fails.

• Provides low-voltage control for the designated function or user interface
• Communicates with the main control to execute settings and cycles
• Helps resolve symptoms such as unresponsive controls, blank/flickering display, intermittent operation, or related error codes
• Supports reliable operation of the affected subsystem after replacement

• Disconnect power at the breaker; shut off gas/water if applicable
• Use ESD protection and handle the board by the edges
• Photograph wire locations; transfer connectors one at a time to avoid miswiring
• Follow the service sheet for any required option-code entry, reset, or diagnostic check after installation

This small retaining clip secures its mating component within the refrigerator assembly, keeping parts properly seated and reducing vibration. Replacing a damaged or missing clip helps restore a snug fit and reliable operation of the attached piece.

• Holds the designated part firmly in place within the assembly
• Maintains proper alignment to prevent movement or rattling
• Helps ensure panels, ducts, or lines stay secured during use
• Symptoms can include loose or sagging parts, vibration noises, or components that won't stay attached

• Disconnect power; if working near the water system, also shut off the water supply
• Note the original orientation and placement before removal
• Fully seat the mating component, then press the new clip into place without forcing
• Check operation before reassembly

This guide assembly is a chassis alignment and support piece that helps hold and position internal TV components for proper fit and operation. Replacing a damaged guide restores secure mounting and reduces panel or board movement. What it does:

• Secures and aligns internal TV modules or boards to the cabinet
• Prevents rubbing, vibration noise, and intermittent contact from loose parts
• Helps keep the display and internal assemblies correctly spaced for reliable operation
• Useful when cracked, warped, or broken guides cause misalignment or rattling

• One guide assembly as shown

• Unplug the TV and remove power/antenna cables before starting
• Ground yourself to protect against static-sensitive components
• Use original screws and fasteners; inspect adjacent tabs and mounts for damage during installation

This rail guide assembly restores smooth, stable sliding for a refrigerator/freezer drawer or shelf drawer, helping the drawer track properly and reducing rubbing or sticking during use. What it does:

• Replaces a worn or damaged drawer slide rail to restore proper alignment and smooth movement
• Helps stop drawers from sticking, binding, scraping, or falling out of track
• Supports the drawer weight and guides it in and out evenly
• Reduces noise caused by misaligned or worn rails

• Disconnect power (and water, if applicable) before servicing the appliance
• Remove the drawer or shelving to access the rail; retain fasteners for reuse unless new ones are provided
• Inspect matching rail on the opposite side; replace both sides if both show wear for best performance

This cover cap is a small plastic trim piece that protects exposed fasteners and improves the appliance's appearance. It snaps into place to hide mounting posts and help prevent snags or debris buildup. What it does:

• Covers and protects exposed screws, posts, or fasteners for a finished look
• Prevents lint, dust, and debris from collecting around the mounting point
• Reduces the chance of fabric snags or contact with sharp edges
• Restores worn or missing trim for improved cosmetics

• Disconnect power to the appliance before starting any service that exposes electrical components
• Usually installs by snapping over the post or press-fitting into the trim opening — no special tools required
• If needed, remove adjacent trim pieces to gain access, then reinstall trim in reverse order
• Inspect surrounding mounting hardware for damage and replace if necessary

This motor bracket assembly secures the appliance motor to the cabinet, keeping the motor properly positioned for reliable operation and reducing vibration or rubbing. Replaces a worn or damaged motor mounting bracket to restore stability. What it does:

• Holds the motor in place to maintain proper belt alignment and drivetrain geometry
• Prevents motor movement that can cause loud noise, grinding, or rubbing
• Reduces excessive vibration that can transfer to the cabinet or other components
• Helps maintain safe, consistent motor operation during spin or drive cycles

• Disconnect power (and gas if applicable) before starting any repair
• Support the motor before removing mounting hardware to avoid strain on wires or components
• Tighten all fasteners to OEM torque specs; replace any damaged brackets or fasteners
• Test operation after installation and re-check for proper alignment and noise

Note: Left Rail Cap

This rail guide assembly replaces a worn or broken slide rail that supports smooth movement of a drawer or component. Restores proper alignment and helps the drawer glide quietly and evenly. What it does:

• Guides and supports the drawer or sliding component along its track.
• Replaces damaged or bent rail sections that cause sticking or uneven movement.
• Reduces scraping, grinding, or noisy operation from a faulty guide.
• Helps restore proper alignment to prevent binding or partial closure.

• One rail guide assembly.

• Disconnect power (and water if applicable) and follow appliance-specific disassembly steps before replacing the rail.
• Basic hand tools are typically required; avoid forcing components to prevent breakage.
• Keep fasteners and any removed parts organized for reassembly.

Note: Right Rail Cap