ZF 4108.017.100 P 7300 | OEM Genuine Part

Overview

The ZF 4108.017.100 P 7300 is an OEM genuine hydraulic control unit designed for heavy-duty powershift transmissions used in construction machinery. This precision-engineered component governs clutch pressure modulation and gear engagement sequencing within the valve body assembly. As a critical fluid power interface, it ensures smooth directional shifts under high torque loads. The SKU 4108.017.100 is factory-coded to match original ZF tolerances, making it a direct replacement for worn units in loader, dozer, and grader transmissions. It integrates with the main housing assembly, which is secured by the 4108101097 HOUSING and the 4108201307 HOUSING to form the sealed hydraulic circuit.

Symptoms of Failure

• Delayed or harsh gear engagement: When the control unit loses internal sealing integrity, clutch pack fill times increase, causing a noticeable lag or jarring shift when moving from neutral to forward or reverse.
• Intermittent transmission slipping under load: Worn spool valves or degraded springs inside the 4108.017.100 allow hydraulic pressure to bleed off, resulting in momentary power loss during uphill climbs or heavy digging cycles.
• External hydraulic oil seepage at the valve body: Cracks in the control unit casting or failed O-rings produce slow drips around the mating surface, often first noticed as a thin film on the 0501215601 OIL LEVEL GAGE area.
• Erratic shift pattern or stuck gear: Internal contamination or galling of the control piston prevents the unit from returning to neutral, locking the transmission in one range until the engine is shut down.

Technical Specifications

Compatibility

This control unit is engineered for ZF WG series powershift transmissions commonly installed in wheel loaders, telehandlers, and excavators. It is a direct fit for the WG180, WG200, and WG211 models. It also serves as a service replacement for certain 4WG-180 and 4WG-200 variants used in early 2000s construction equipment. Always verify the transmission serial number against the 0730365280 TYPE PLATE before installation.

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