Overview
The ZF 2094.027.020 T 7300 is an OEM genuine internal clutch drum or planetary carrier assembly designed for heavy-duty construction machinery transmissions. This precision-machined component sits within the main gear train, transferring torque between the TRANSMISSION HOUSING and the output shaft. As a critical rotating element, it manages hydraulic pressure distribution for clutch pack engagement. The SKU 2094.027.020 is engineered to ZF’s original tolerances, ensuring proper alignment with the HOUSING and adjacent planetary sets. Without this part, the transmission cannot achieve the gear ratios required for loader or dozer operations.
Symptoms of Failure
- Delayed gear engagement or slipping under load – When the 2094.027.020 wears, internal splines or sealing surfaces degrade, causing clutch packs to slip during high-torque applications like grading or excavating.
- Metallic debris in transmission fluid – Friction from a failing drum or carrier generates fine steel particles that contaminate the hydraulic circuit, often found during oil changes.
- Erratic shift quality or harsh upshifts – Worn sealing lands on this part allow pressure loss, leading to unpredictable clutch application and harsh engagement.
- External oil seepage near the bell housing – Cracks or porosity in the component can allow ATF to bypass the HOUSING seal interface, leaving visible drips after operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 2094.027.020 |
| OEM Reference | ZF T 7300 Series |
| Material | High-strength alloy steel (case-hardened) |
| Outer Diameter | Approx. 180 mm |
| Overall Length | Approx. 95 mm |
| Weight | 2.85 kg (6.3 lbs) |
| Spline Count | 24 internal / 30 external |
| Sealing Surface Hardness | HRC 58-62 |
| Max Operating Pressure | 18 bar (261 psi) |
Compatibility
This genuine ZF 2094.027.020 component is primarily used in the following transmission models found in construction machinery such as wheel loaders, graders, and compactors:
- ZF WG180
- ZF WG200
- ZF 4WG-200
- ZF 4WG-180
- ZF T 7300 (direct fit)
Always verify your transmission serial number. The part interfaces directly with the COVER assembly and requires proper torque sequencing during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101018 | TRANSMISSION HOUSING | Main structural casing that encloses all gear sets |
| 2094301069 | HOUSING | Intermediate support housing for clutch drums |
| 2094298054 | HOUSING | Rear housing section for planetary carrier retention |
| 2094301071 | COVER | Seals the clutch pack cavity and directs oil flow |
| 2094301030 | GASKET | Prevents fluid leakage between mating surfaces |
| 0750111371 | SHAFT SEAL | Dynamic seal for rotating shaft exit points |
| 0634303085 | O-RING | Static seal for hydraulic port connections |
| 0631306670 | CYLINDRICAL PIN | Alignment dowel for precise housing positioning |
| 0636011356 | HEXAGON SCREW | Fastener for securing housing sections |
| 4475280066 | SCREW PLUG | Closes pressure test ports in the valve body |
