Overview
The ZF 4661.375.011 INNER DISK CARRIER is a critical internal component engineered specifically for the WG 94 series of heavy-duty transmissions. This genuine OEM part functions as the central hub that houses and aligns the clutch disk packs, ensuring precise torque transfer and smooth gear engagement. Positioned within the main shaft assembly, the carrier interfaces directly with the 4661101013: TRANSMISSION HOUSING to maintain proper clearance and load distribution. The SKU 4661.375.011 is machined from high-strength alloy steel to withstand the extreme cyclic stresses found in construction and agricultural machinery applications.
Symptoms of Failure
- Erratic gear engagement or slipping: When the inner disk carrier wears, clutch packs lose proper alignment, causing delayed or rough shifting under load.
- Metallic grinding noises from the transmission: A worn carrier allows excessive axial play, leading to contact between rotating disks and the 4661301022: HOUSING.
- Oil contamination with metallic debris: Fatigue cracks or spline wear on the carrier generate fine metal particles that circulate through the hydraulic system.
- Reduced torque capacity during heavy operation: A deformed carrier cannot maintain proper clutch pack clamping force, resulting in power loss under high load.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4661.375.011 |
| OEM Reference | ZF 4661.375.011 |
| Material | Case-hardened alloy steel (16MnCr5 equivalent) |
| Outer Diameter | 195 mm (estimated) |
| Inner Diameter | 85 mm (estimated) |
| Overall Height | 62 mm (estimated) |
| Weight | 2.8 kg (estimated) |
| Spline Count | 24 internal splines |
| Hardness | 58-62 HRC (case depth 0.8 mm) |
Compatibility
This inner disk carrier is designed for the ZF WG 94 series, which includes the following transmission models: WG94, WG180, WG200, and WG240. It is also compatible with select variants of the WG150 and WG250 series that share the same clutch pack architecture. Always verify the 0769123894: TYPE PLATE on your transmission to confirm exact model fitment. The carrier is secured in place using a 0631306174: CYLINDRICAL PIN that prevents rotational movement during operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101013 | TRANSMISSION HOUSING | Encloses the gear train and supports the disk carrier assembly |
| 4661301022 | HOUSING | Secondary housing component for clutch pack alignment |
| 0631306174 | CYLINDRICAL PIN | Locates and secures the disk carrier to the shaft |
| 0769123894 | TYPE PLATE | Identification plate with transmission model and serial number |
| 0750100022 | SCREW PLUG | Seals hydraulic passages in the carrier assembly |
| 4660201008 | SCREW PLUG | Oil gallery plug for lubrication flow control |
| 0636100117 | SCREW PLUG | Pressure port sealing plug |
| 0501211384 | VALVE | Hydraulic control valve for clutch modulation |
| 0732042156 | COMPRESSION SPRING | Provides return force for clutch piston |
| 0636100820 | SCREW PLUG | Drain plug for the carrier cavity |
