ZF 5838.023.004 REAR AXLE | OEM Genuine Part

Overview

The ZF 5838.023.004 REAR AXLE is a critical OEM genuine component engineered for the final drive assembly in heavy-duty construction machinery transmissions. This part transmits rotational torque from the differential directly to the wheel hubs, ensuring reliable power delivery under extreme loads. As a precision-machined axle shaft, it sits within the axle housing and interfaces with the differential side gears and wheel bearings. The SKU 5838.023.004 is manufactured to ZF’s original specifications, guaranteeing exact fitment and durability in demanding environments such as wheel loaders, graders, and excavators. When paired with a compatible 5838109007: DIFFERENTIAL, this rear axle maintains proper gear alignment and load distribution across the drivetrain.

Symptoms of Failure

• Axle seal leakage and gear oil seepage: Worn splines or surface scoring on the 5838.023.004 rear axle can damage the wheel-end seal, causing visible oil drips near the hub. This often leads to low lubricant levels and accelerated wear on surrounding components.
• Intermittent wheel slip or loss of traction: A fatigued axle shaft may twist or develop micro-cracks under heavy torque, resulting in momentary power loss during loading cycles. Operators report a “clunking” sensation when engaging the drivetrain.
• Abnormal bearing noise from the wheel end: When the rear axle’s bearing journal wears unevenly, it creates a rhythmic grinding or humming sound that increases with vehicle speed. This symptom often indicates the need to replace the 0750117075: TAPER ROLLER BEARING alongside the axle.
• Vibration during straight-line travel: A bent or unbalanced rear axle produces low-frequency vibrations felt through the chassis. This can accelerate wear on the 2095209019: DIFFERENTIAL and its internal gears.

Technical Specifications

Compatibility

This genuine ZF rear axle is designed for use in the following transmission families commonly found in construction machinery:

• ZF WG180 – 4-speed powershift transmissions for wheel loaders (e.g., ZL50 series)
• ZF WG200 – Heavy-duty transmissions for graders and dozers
• ZF 4WG-200 – Modular transmissions with integrated differential
• ZF 6WG-250 – High-torque transmissions for large excavators

During installation, always inspect the 0631329086: SPRING PIN that secures the axle to the differential side gear, as this pin can shear under shock loads.

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