ZF 0501.338.612 SLOTTED NUT | OEM Genuine Part

Overview

The ZF 0501.338.612 SLOTTED NUT is a precision-engineered fastening component designed to secure rotating assemblies within ZF heavy-duty transmissions. This OEM genuine part, identified by SKU 0501.338.612, functions as a critical locking mechanism on shafts and gear clusters, preventing axial movement under high torque loads. Typically positioned in the final drive or planetary gear sections, this slotted nut ensures that bearings and gears maintain correct end-play tolerances. When paired with the 4699103123: OUTPUT shaft assembly, it provides a secure interface that withstands the extreme vibration and shock loads common in construction machinery applications.

Symptoms of Failure

When the ZF 0501.338.612 slotted nut loses its locking integrity, operators may notice distinct performance issues. Transmission gear slippage under load often occurs as the nut loosens, allowing shaft components to drift out of alignment. Unusual metallic rattling from the transmission housing indicates that the nut has backed off, causing gear clash. Premature bearing failure can result from improper preload, leading to overheating and debris contamination. Oil leaks at the output flange may develop when the nut’s loosening compromises the seal seating surface, a symptom frequently linked to worn 4699101153: HOUSING components.

Technical Specifications

Compatibility

This slotted nut is engineered for use across multiple ZF transmission platforms common in construction machinery. It is a direct fit for the ZF WG180 and WG200 series, where it secures the output shaft bearing retainer. The part also applies to the ZF 4WG-200 and 5WG-200 powershift transmissions, as well as the ZF Ergopower series used in wheel loaders. For proper installation, the nut must be torqued and staked into the slot of the 4699102106: INPUT shaft, working in conjunction with the 4699025161: GP25 gear set to maintain driveline integrity.

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