ZF 4460.355.075 ADJUSTING NUT | OEM Genuine Part

Overview

The ZF 4460.355.075 ADJUSTING NUT is a precision-machined component responsible for setting the correct end-play and preload on shaft assemblies within ZF heavy-duty powershift transmissions. This OEM genuine part, identified by SKU 4460.355.075, is typically located on the output shaft or countershaft, where it locks the bearing race against the housing to eliminate axial movement. Proper adjustment via this nut ensures that gear meshing remains within factory tolerances, preventing excessive vibration and wear. It is a critical element in maintaining the structural integrity of the gear train, often secured in place by a SCREW PLUG or lock washer to prevent loosening during operation.

Symptoms of Failure

When the ZF 4460.355.075 adjusting nut loses its torque retention or becomes damaged, operators will notice distinct mechanical issues. Transmission gear slipping under load is a primary symptom, as the shaft loses its precise positioning. Excessive drivetrain backlash or a clunking noise when shifting between forward and reverse indicates that the nut has backed off. Premature bearing failure and metal debris in the oil filter often follow, caused by the resulting axial play. Finally, hard-to-diagnose vibration at specific RPM ranges can be traced back to a loose adjusting nut, which allows the shaft to wobble slightly.

Technical Specifications

Compatibility

This adjusting nut is engineered for use in ZF’s ERGOPOWER and ECOMIX series of powershift transmissions, specifically the WG180, WG200, and WG211 models. It is also commonly found in the 4WG-200 and 5WG-200 variants used in construction machinery such as wheel loaders and telehandlers. When replacing this nut, it is essential to also inspect the HOUSING for wear on the bearing seat, and the HOUSING for cracks. Always install a new O-RING on the adjusting nut’s sealing groove to prevent oil bypass.

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