ZF 5840.303.242 LUBRICATION TUBE | OEM Genuine Part

Overview

The ZF 5840.303.242 LUBRICATION TUBE is a critical fluid delivery component engineered for heavy-duty construction machinery transmissions. This OEM genuine part channels pressurized oil directly to the differential and planetary gear sets, ensuring consistent lubrication under extreme loads. Positioned within the transmission housing, the tube connects the main oil gallery to the rotating assembly, preventing metal-on-metal contact during high-torque operations. The SKU 5840.303.242 is precision-formed to maintain flow integrity, reducing thermal stress on adjacent components such as the 2097109012 DIFFERENTIAL and the 0750117075 TAPER ROLLER BEARING.

Symptoms of Failure

• Oil leaks near the transmission housing: A cracked or corroded lubrication tube allows pressurized oil to escape, leaving visible puddles under the vehicle and causing gradual fluid loss.
• Gear slipping under load: Insufficient oil delivery to the 2093209096 DIFFERENTIAL results in momentary power loss during acceleration or climbing.
• Overheating in the differential area: Restricted flow through a blocked tube raises operating temperatures, often triggering warning lights on construction equipment dashboards.
• Whining or grinding noises from the axle: Starved lubrication accelerates wear on the 2093309073 DIFF.HOUSING, producing audible metallic sounds during turns.

Technical Specifications

Compatibility

This lubrication tube is designed for ZF WG180, WG200, and WG250 series transmissions commonly used in wheel loaders, excavators, and telehandlers. It also fits select ZF Ecomat models with hydraulic retarders. For precise fitment, verify the transmission serial number against the OEM parts catalog. The tube works in conjunction with the 0631100223 SPRING PIN and 0730300820 THRUST WASHER to secure the assembly.

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