ZF 2094.304.054 MAIN SHAFT for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 2094.304.054 MAIN SHAFT is a critical rotating component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part transmits torque from the input shaft to the output shaft through the gear train, ensuring precise power delivery in heavy-duty commercial vehicles. As the central axis of the gear cluster, the main shaft must maintain exacting concentricity to prevent vibration and premature wear. The SKU 2094.304.054 is manufactured to ZF’s original specifications, guaranteeing a direct fit and long service life. When rebuilding a transmission, this shaft is often replaced alongside the 2094104412: MAIN SHAFT to ensure matched wear patterns in the gear set.

Symptoms of Failure

When the ZF 2094.304.054 main shaft begins to fail, operators will notice distinct performance issues. 1. Excessive gear noise under load – a whining or grinding sound during acceleration indicates bearing surface wear on the shaft journals. 2. Gear engagement difficulty – worn splines cause hesitation or grinding when shifting, particularly in lower gears. 3. Oil contamination with metallic debris – fine steel particles in the transmission fluid signal that the shaft surface is spalling. 4. Vibration through the driveline – a rhythmic shudder at highway speeds suggests the shaft has developed a bend or torsional fatigue. Addressing these symptoms early prevents damage to the 2094106010: SHIFT SYSTEM and other internal components.

Technical Specifications

Compatibility

This main shaft is specifically designed for ZF’s WG-series transmissions. It is a direct replacement for the following models: WG100, WG130, and WG131. It may also be compatible with earlier WG80 variants when used with the correct bearing set. For WG180 or WG200 transmissions, please verify spline count and overall length, as these larger units use a different shaft diameter. When servicing any of these transmissions, always inspect the 2094206001: GEARSHIFT SHAFT and 2094306053: GEARSHIFT SHAFT for wear, as they share the same lubrication circuit.

Related Components

Frequently Asked Questions

Q: Can I use the ZF 2094.304.054 main shaft in a WG180 transmission?
A: No, the WG180 uses a larger diameter main shaft (typically 55 mm journal). This part is designed exclusively for WG100, WG130, and WG131 models. Always cross-reference your transmission model before ordering.

Q: What is the recommended torque for the main shaft nut when installing this part?
A: ZF specifies a tightening torque of 250 Nm for the main shaft retaining nut, applied in a single continuous motion. Always use a new lock nut and apply thread locker to prevent loosening during operation.

Q: How often should the main shaft be inspected during a transmission rebuild?
A: Inspect the shaft every 300,000 km or whenever the transmission is opened for clutch or bearing replacement. Look for scoring, discoloration (indicating heat damage), or visible wear on the splines. Replace if any surface defects are found.

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