Overview
The ZF 4616.102.428 INPUT for WG65 is a critical OEM genuine component that serves as the primary torque-receiving interface within the transmission assembly. This part, identified by SKU 4616.102.428, is mounted directly to the engine-side of the gearbox and channels rotational force into the planetary gear sets. Precision-machined from high-strength alloy steel, it ensures smooth power transfer and maintains axial alignment under heavy loads. As a genuine ZF part, it guarantees exact fitment and durability for the WG 65 Series, reducing the risk of premature wear in demanding industrial applications.
Symptoms of Failure
When the ZF 4616.102.428 INPUT begins to fail, operators often notice specific performance issues. Oil leaks around the input shaft seal are a common early indicator, often caused by surface wear or micro-cracking. Gear slipping under load occurs when the input splines strip or deform, preventing proper engagement with the torque converter. Abnormal vibration or whining noise from the bell housing area typically signals bearing surface degradation on the input shaft. Finally, difficulty shifting between forward and reverse can arise if the input assembly develops axial play, misaligning the clutch packs.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4616.102.428 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 245 mm |
| Input Spline Diameter | 38 mm |
| Weight | 4.2 kg |
| OEM Reference | ZF WG65 Series |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This genuine ZF 4616.102.428 INPUT is specifically engineered for the WG 65 Series transmissions. Based on its design and spline configuration, it is also compatible with the following ZF models: WG180, WG200, and WG250 series gearboxes used in construction and agricultural machinery. Always verify the input shaft spline count and pilot bearing diameter against your transmission’s service manual before installation.
During replacement, several companion parts should be inspected and replaced simultaneously. The 4616105413: OUTPUT works in tandem with the input to complete the power flow path. The 4616203017: OUTPUT FLANGE must be torqued correctly to prevent driveline imbalance. The 4616101117: TRANSMISSION HOUSING provides the structural support for the input bearing. Secure the assembly using a 0636011038: HEXAGON SCREW to ensure proper clamping force.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from planetary gears to driveshaft |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to universal joint |
| 4616101117 | TRANSMISSION HOUSING | Encloses and supports gear train components |
| 0636011038 | HEXAGON SCREW | Fastens input bearing retainer to housing |
| 0636016015 | HEXAGON SCREW | Secures output flange to shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves during assembly |
| 0634313118 | O-RING | Seals input shaft bore against oil leakage |
| 0732611049 | FILTER INSERT | Traps debris in lubrication circuit |
| 0634303718 | O-RING | Seals output flange to housing interface |
| 0636610082 | STUD | Provides threaded mounting for bell housing |
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