ZF 4699.303.182 SLOTTED NUT | OEM Genuine Part

Overview

The ZF 4699.303.182 SLOTTED NUT is a precision-engineered locking component designed to secure critical rotating assemblies within heavy-duty ZF construction machinery transmissions. This OEM genuine part, identified by SKU 4699.303.182, functions as a primary retention mechanism for bearings, shafts, or gear clusters, preventing axial displacement under extreme torque and vibration. It sits directly on threaded shafts inside the transmission housing, where it must maintain a precise clamping force to ensure drivetrain integrity. The slotted design allows for positive locking with a cotter pin or tab washer, making it indispensable for maintaining gear mesh alignment and preventing catastrophic loosening during operation.

Symptoms of Failure

• Transmission oil leaks near the output shaft flange: When the slotted nut loosens, it can compromise the seal surface, allowing hydraulic fluid to escape past the 4699101124: HOUSING interface.
• Gear slipping under load or erratic shifting: A worn or stripped slotted nut fails to hold shaft preload, causing gear train backlash and intermittent power loss during excavation or grading operations.
• Metallic grinding noises from the transmission center section: Excessive axial play from a failing nut allows gear teeth to contact the 4699301209: HOUSING walls, producing audible wear sounds.
• Vibration in the driveline during acceleration: Loss of nut torque creates rotational imbalance, felt as shuddering through the chassis when engaging the PTO or moving heavy loads.

Technical Specifications

Compatibility

This slotted nut is engineered for ZF heavy-duty powershift transmissions commonly found in construction machinery. It is compatible with the following ZF model families: WG180, WG200, WG210, and WG250 series. The part is also used in certain ErgoPower and Ecolife variants where shaft retention requires a positive locking mechanism. For proper installation, ensure the mating shaft threads are clean and that the nut is paired with a new cotter pin. Always verify fitment with your specific transmission serial number, as the nut interfaces directly with the 4699301015: HOUSING COVER and the 4699301085: COVER assembly to maintain internal pressure seals.

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