ZF 4108.138.024 FAN | OEM Genuine Part

Overview

The ZF 4108.138.024 FAN is a critical cooling component engineered for demanding construction machinery transmissions. Positioned within the transmission’s auxiliary drive system, this OEM genuine part ensures consistent airflow to regulate operating temperatures under heavy loads. The SKU 4108.138.024 directly interfaces with the hydraulic circuit and mechanical drive train, preventing thermal degradation of seals and fluids. When paired with the 4108101140 HOUSING, it forms a sealed assembly that directs air across the oil cooler. This fan is specifically designed to match ZF’s original balancing and pitch specifications, making it a direct replacement for worn units in wheel loaders, graders, and excavators.

Symptoms of Failure

• Intermittent overheating during low-speed operation: A failing fan reduces airflow, causing transmission fluid temperatures to spike above 110°C, especially in stop-and-go construction cycles.
• Unusual vibration or whining noise from the transmission housing: Worn blades or a bent hub create imbalance, which can be heard as a rhythmic drone that worsens with RPM.
• Hydraulic system pressure drops: When the fan fails to engage properly, the 0501211694 MOTOR compensates by drawing excess current, leading to erratic pressure readings in the main circuit.
• Visible cracks or missing blade segments: Impact debris or fatigue fractures cause material loss, which can be spotted during visual inspection of the fan ring.

Technical Specifications

Compatibility

This fan is a direct fit for ZF WG180, WG200, and WG210 series transmissions commonly used in Volvo, Liebherr, and Caterpillar construction machinery. It also applies to the 4WG-200 and 5WG-200 variants where the cooling fan is driven by a hydraulic motor. For proper installation, verify that the 0501314793 COVER and 0501314799 BUSH are free of wear, as these components align the fan shaft. The 4108.138.024 replaces earlier part numbers 4108.138.020 and 4108.138.022 without modification.

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