Overview
The ZF 4108.102.075 INPUT is a critical OEM genuine component designed for heavy-duty construction machinery transmissions. This part serves as the primary power intake point within the ZF gearbox assembly, transferring torque from the engine directly into the transmission’s planetary gearset. As the initial point of contact for rotational force, the input shaft and its associated housing must withstand extreme loads and thermal cycling. The SKU 4108.102.075 is precision-machined to ZF’s exacting tolerances, ensuring seamless engagement with the 4108101174: HOUSING and the 4108201298: HOUSING to form a sealed, durable assembly. Without this input component, the transmission cannot initiate power flow, making it indispensable for operational uptime in excavators, loaders, and graders.
Symptoms of Failure
When the ZF 4108.102.075 INPUT begins to fail, operators may notice distinct performance issues. Look for these specific failure symptoms:
- Torque converter shudder or vibration during acceleration, indicating worn splines or bearing surfaces on the input shaft.
- Transmission fluid leaks near the bell housing, often caused by a compromised 0501325471: SEALING RING that no longer seals against the input housing.
- Delayed or harsh gear engagement when shifting from neutral to drive, suggesting excessive play in the input assembly.
- Metallic grinding noises from the front of the transmission, pointing to bearing failure or galling on the input shaft surface.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4108.102.075 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.85 kg (6.28 lbs) |
| Overall Length | 215 mm |
| Spline Diameter | 32 mm (10-spline, DIN 5480) |
| OEM Reference | ZF 4108.102.075 |
| Surface Finish | Ground and polished, 0.8 Ra |
Compatibility
This OEM genuine input component is engineered for ZF’s WG series powershift transmissions commonly found in construction machinery. Based on its design and spline configuration, the 4108.102.075 is compatible with the following ZF transmission models:
- ZF WG180
- ZF WG200
- ZF WG210
- ZF WG220
These transmissions are used in wheel loaders, dozers, and telehandlers. Always verify the 0730365308: TYPE PLATE on your transmission housing to confirm exact fitment. The input assembly works in conjunction with the 0501225852: OIL LEVEL GAGE for proper lubrication monitoring.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101174 | HOUSING | Encloses the input shaft assembly |
| 4108201298 | HOUSING | Secondary housing for bearing support |
| 0501225852 | OIL LEVEL GAGE | Monitors transmission fluid level |
| 0501325471 | SEALING RING | Prevents fluid leakage at input joint |
| 0730365308 | TYPE PLATE | Identifies transmission model and specs |
| 4108301475 | INPUT SHAFT | Primary torque transfer shaft |
| 0750116982 | BALL BEARING | Supports rotating input shaft |
| 0630502039 | RETAINING RING | Secures bearing in housing |
| 0630531064 | RETAINING RING | Locks shaft axial position |
| 0636302014 | SCREW PLUG | Seals housing access port |
