ZF 4108.021.104 PLM 9 | OEM Genuine Part

Overview

The ZF 4108.021.104 PLM 9 is a precision-engineered OEM genuine part designed for the planetary gear set within heavy-duty ZF construction machinery transmissions. This component functions as a critical load-bearing element, managing torque distribution and rotational stability in the gear train. Specifically, it interfaces with the 4108101161 HOUSING to ensure proper alignment and oil flow. The SKU 4108.021.104 is manufactured to ZF’s original specifications, guaranteeing exact fit and performance in demanding environments such as wheel loaders and graders.

Symptoms of Failure

• Erratic gear engagement or slipping under load: When the 4108.021.104 wears, the planetary gear set loses its precise meshing, causing intermittent power loss during acceleration or climbing.
• Metallic grinding noise from the transmission housing: Worn surfaces on this part generate audible friction, often mistaken for bearing failure, but localized to the PLM 9 assembly.
• Oil contamination with metallic debris: As the part degrades, fine metal particles enter the hydraulic circuit, accelerating wear on the 0501215910 MOTOR and valve body.
• Increased operating temperature: Excessive friction from a failing 4108.021.104 raises transmission fluid temperature beyond normal ranges, triggering warning lights.

Technical Specifications

Compatibility

This genuine ZF 4108.021.104 PLM 9 is compatible with the following ZF transmission models commonly found in construction machinery: WG180, WG200, WG210, and WG240 series. It also fits select 4WG-200 and 5WG-210 variants used in excavators and telehandlers. For proper installation, ensure the 0501320268 COVER is inspected for wear, and the 0735370298 ROLLER BEARING is replaced simultaneously to prevent premature failure.

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