ZF 4699.372.145 STEERING LIMITER | OEM Genuine Part

Overview

The ZF 4699.372.145 STEERING LIMITER is an OEM genuine component engineered to precisely control the maximum steering angle in heavy-duty construction machinery transmissions. This critical valve assembly sits within the hydraulic control circuit of the transmission, preventing over-steering that could damage internal gears or the steering cylinder. The part number 4699.372.145 ensures exact fitment and performance as specified by ZF, maintaining the integrity of the entire driveline. When functioning correctly, it provides a mechanical stop that limits rotation, protecting both the HOUSING and the OUTPUT shaft from excessive stress during tight maneuvers.

Symptoms of Failure

• Intermittent steering lock failure: The machine may occasionally exceed its intended turning radius, causing unexpected contact with obstacles or other equipment.
• Hydraulic fluid seepage around the steering column: Worn seals on the limiter allow oil to escape, leaving visible puddles under the chassis after operation.
• Erratic or jerky steering response: A failing limiter can cause the steering to feel inconsistent, with sudden stops or delayed engagement during turns.
• Increased wear on the INPUT shaft: Without proper limiting, the input shaft experiences abnormal lateral loads, accelerating bearing and gear degradation.

Technical Specifications

Compatibility

This steering limiter is designed for integration with ZF’s WG series powershift transmissions commonly used in wheel loaders, excavators, and telehandlers. It is compatible with the following transmission models: WG180, WG200, WG210, and WG250. The part interfaces directly with the GK10LD control valve assembly, ensuring synchronized operation between the steering limiter and the transmission’s hydraulic logic. Always verify your transmission serial number against ZF’s documentation before installation.

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