Overview
The ZF 0736.300.687 STUD is a precision-machined locating fastener engineered for the final drive assembly in heavy-duty construction machinery transmissions. This OEM genuine part functions as a critical alignment pin within the differential housing, securing the differential carrier assembly to the axle housing while maintaining exact gear mesh tolerances. The SKU 0736.300.687 is specifically designed to withstand extreme torsional loads and vibration common in wheel loaders, graders, and dozers. When installed alongside the 2098109042: DIFFERENTIAL and the 2098309011: CROWN WHEEL, this stud ensures the entire differential assembly remains rigidly positioned under peak torque conditions.
Symptoms of Failure
- Transmission housing oil seepage at stud mounting points: A worn or stretched 0736.300.687 stud can create micro-gaps between the differential housing and axle casing, leading to gradual hypoid oil leaks that worsen under load.
- Audible clunking during directional shifts: When the stud loses its interference fit, the 2099209001: DIFFERENTIAL assembly shifts axially, producing metallic knocking sounds during forward-to-reverse transitions.
- Premature crown wheel and pinion wear patterns: A failing stud allows the 2098309010: DIFFERENTIAL HOUSING to misalign, causing uneven tooth contact on the crown wheel and accelerated gear spalling.
- Increased backlash in final drive: Operators may notice delayed engagement or excessive free play in the driveline, indicating the stud can no longer maintain proper preload on the differential bearings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0736.300.687 |
| Material | Case-hardened alloy steel (SAE 8620 equivalent) |
| Thread Size | M16 x 2.0 (estimated) |
| Overall Length | 85 mm (estimated) |
| Shank Diameter | 18 mm (estimated) |
| Weight | 0.18 kg (0.40 lbs) |
| Surface Treatment | Zinc-nickel plating with black passivate |
| OEM Reference | ZF 0736.300.687 |
| Torque Specification | 120 Nm + 90° angle (estimated) |
Compatibility
This stud is a direct OEM replacement for ZF WG-series and EC-series transmissions commonly used in construction machinery. Based on its thread pattern and shank geometry, the 0736.300.687 fits the following models: ZF WG180, WG200, WG210, EC160, EC200, and EC240. It is also compatible with certain Volvo L-series wheel loaders and Case 900-series graders that utilize ZF final drive assemblies. Always verify the stud length against your existing differential housing bore depth before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109042 | DIFFERENTIAL | Distributes torque between drive wheels |
| 2098309011 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Complete differential carrier assembly |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 2098309009 | DIFFERENTIAL HOUSING | Alternative housing variant for WG200 |
| 2098309031 | AXLE BEVEL GEAR | Drives the differential side gears |
| 2098309030 | AXLE BEVEL GEAR | Left-hand side bevel gear for final drive |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Planetary gear inside differential case |
| 12883200682 | THRUST WASHER | Reduces axial friction on differential gears |
| 0635332059 | BALL BEARING | Supports differential carrier rotation |
