ZF 4143.315.051 PLANETARY GEAR for HL 100/HL 270 | OEM Genuine Part

Overview

The ZF 4143.315.051 PLANETARY GEAR is a critical torque-multiplying component engineered for the HL 100 and HL 270 series transmissions. This OEM genuine part sits within the planetary gear set assembly, directly transferring rotational force from the sun gear to the carrier while managing extreme load distribution. Designed for heavy-duty industrial applications, the 4143.315.051 ensures smooth power flow and reduces stress on adjacent components such as the 4143101016 HOUSING and the 4143301039 HOUSING. Precision-ground teeth and case-hardened metallurgy guarantee long service intervals in high-torque environments.

Symptoms of Failure

• Whining or grinding noise during gear engagement: Worn planetary gears produce a distinct high-pitched whine under load, often escalating to a grinding sound as tooth profiles degrade.
• Intermittent power loss or gear slipping: Damaged gear teeth fail to maintain consistent mesh, causing sudden torque drops or hesitation during acceleration in HL 100 and HL 270 units.
• Metallic debris in transmission oil: Flaking or pitting on the planetary gear surface releases fine metal particles into the lubricant, visible during oil changes or filter inspections.
• Overheating near the planetary carrier: Excessive friction from a failing gear generates localized heat, often accompanied by burnt oil odor or thermal discoloration on the 0501318136 GASKET.

Technical Specifications

Compatibility

This planetary gear is specifically designed for ZF HL 100 and HL 270 series transmissions. Based on its gear geometry and spline configuration, it is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. The 4143.315.051 interfaces directly with the sun gear shaft and is secured using a 0636101084 CAP SCREW. For proper sealing during installation, always replace the 0501318136 GASKET to prevent oil migration between the planetary carrier and the housing.

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