Overview
The ZF 2094.259.029 DISC CARRIER is a critical internal component within the clutch pack assembly of heavy-duty ZF powershift transmissions. This OEM genuine part functions as the rotating hub that houses and supports the friction discs and steel separator plates. When hydraulic pressure engages the clutch, the disc carrier transfers torque from the transmission input to the planetary gear sets. Without a structurally sound disc carrier, the transmission cannot maintain gear engagement under load. This specific SKU, 2094.259.029, is engineered to OEM tolerances to ensure precise spline alignment and minimal axial play during high-torque operations in construction machinery.
Symptoms of Failure
- Delayed or harsh gear engagement: When the disc carrier splines wear, the clutch pack fails to seat properly, causing a noticeable lag or jarring shift when moving from neutral to drive.
- Transmission slipping under load: A warped or cracked carrier allows the friction discs to lose clamping force, resulting in power loss when climbing grades or moving heavy loads.
- Metallic debris in transmission fluid: As the carrier hub wears against the TRANSMISSION HOUSING (2094101012), fine metal particles contaminate the oil, often visible during drain intervals.
- Abnormal clutch pack noise: A worn disc carrier produces a distinct rattling or grinding sound from the transmission bell housing, particularly at low RPM.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2094.259.029 |
| Material | High-strength alloy steel (induction hardened) |
| Outer Diameter | Approx. 180 mm |
| Inner Spline Diameter | Approx. 65 mm |
| Overall Height | Approx. 95 mm |
| Weight | 3.2 kg (7.1 lbs) |
| OEM Reference | ZF 2094.259.029 |
| Hardness Rating | HRC 48-52 |
Compatibility
This disc carrier is designed for use in ZF WG series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It is a direct fit for the ZF WG180 and ZF WG200 transmission models. It also serves as a replacement in certain ZF 4WG-200 and ZF 6WG-200 variants. For proper installation, the carrier must be paired with a new HOUSING (2094301036) and HOUSING (2094298057) to maintain correct clutch pack clearance. Always verify your transmission serial number against the OEM parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101012 | TRANSMISSION HOUSING | Encloses the gear train and supports the disc carrier assembly |
| 2094301036 | HOUSING | Intermediate housing that aligns the clutch pack with the output shaft |
| 2094298057 | HOUSING | Rear housing providing bearing support for the carrier hub |
| 2094301071 | COVER | Seals the clutch pack cavity and prevents fluid bypass |
| 0750111371 | SHAFT SEAL | Prevents oil leakage along the carrier shaft interface |
| 0634303085 | O-RING | Hydraulic seal between the carrier and piston |
| 2094301030 | GASKET | Surface seal between housing flanges |
| 0631306670 | CYLINDRICAL PIN | Alignment dowel for precise carrier positioning |
| 0636011356 | HEXAGON SCREW | Fastener for securing the carrier to the hub |
| 4475280060 | SCREW PLUG | Closes hydraulic passages in the carrier assembly |
