ZF 0736.300.728 STUD | OEM Genuine Part

Overview

The ZF 0736.300.728 STUD is a precision-engineered locating pin used within the differential housing assembly of heavy-duty ZF construction machinery transmissions. This OEM genuine part ensures correct alignment and secure fastening of internal gear sets, preventing axial movement under extreme torque loads. The stud acts as a critical anchor point for components such as the CROWN WHEEL and differential carrier, maintaining proper gear mesh patterns. Without this stud, the entire differential unit risks catastrophic misalignment. The SKU 0736.300.728 is specifically machined to ZF’s factory tolerances for long service life in excavators and wheel loaders.

Symptoms of Failure

• Transmission housing cracking near stud bore – A worn or sheared 0736.300.728 stud allows the differential housing to shift, creating stress fractures in the casing. This is often misdiagnosed as a housing defect.
• Intermittent gear grinding during load shifts – When the stud loses its interference fit, the DIFFERENTIAL assembly can wobble, causing crown wheel teeth to contact the pinion incorrectly.
• Metal debris in transmission oil filter – Fatigue fractures on the stud shank produce fine steel particles. This symptom typically appears alongside uneven wear on the DIFFERENTIAL bearings.
• Persistent oil seepage from differential housing joint – A deformed stud distorts the DIFFERENTIAL HOUSING sealing surface, leading to slow leaks that worsen with temperature cycles.

Technical Specifications

Compatibility

This stud is designed for ZF WG series powershift transmissions commonly found in construction machinery. Verified fitments include WG180, WG200, and WG210 models. It also applies to certain ZF 4WG-200 and 5WG-300 variants used in articulated dump trucks. The stud interfaces directly with the differential housing bore and secures the DIFFERENTIAL HOUSING to the transmission case. For machines operating in high-vibration environments (e.g., rock crushers), periodic inspection of this stud is recommended every 2,000 operating hours.

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