ZF 4699.173.003 STEERING GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4699.173.003 STEERING GEAR is a critical component engineered for precise torque transfer within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part functions as the primary interface between the steering column and the hydraulic control system, converting rotational input into linear motion for gear selection. Positioned within the gearbox housing, the 4699.173.003 works in concert with the 4699100080: BASIC GEARBOX to ensure smooth, responsive shifting under heavy industrial loads. The SKU 4699.173.003 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged steering gears in these specific transmission models.

Symptoms of Failure

• Erratic gear engagement or slipping: When the steering gear wears, operators may experience delayed or inconsistent gear shifts, particularly during low-speed maneuvering. This often manifests as a “clunking” sensation or momentary loss of drive power.
• Hydraulic fluid leakage near the steering column: A failing 4699.173.003 can cause oil to seep past the shaft seal, leaving visible puddles under the transmission. This symptom is frequently accompanied by a burnt smell from overheated fluid.
• Increased steering effort or binding: Worn teeth or bearing surfaces within the steering gear create resistance, requiring more force to turn the wheel. This is especially noticeable in cold-start conditions or after prolonged operation.
• Unusual noise during gear changes: A high-pitched whine or grinding sound when shifting indicates metal-on-metal contact inside the steering gear assembly, often requiring immediate replacement to prevent damage to the 0634309122: SHAFT SEAL.

Technical Specifications

Compatibility

This steering gear is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 series when used with the appropriate 0634801038: SEALING RING and 0630000091: SHIM RING for proper axial clearance. Always verify your transmission’s serial number before installation, as variations exist between early and late production runs. For WG131 applications, the steering gear must be paired with the correct shim ring set to maintain backlash tolerances.

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