Overview
The ZF 4661.185.003 ACCESSORIES component is a critical mounting and alignment fixture engineered specifically for the WG 94 Series transmission family. This OEM genuine part serves as a structural interface, ensuring precise positioning of internal assemblies within the gearbox housing. The SKU 4661.185.003 is typically installed during initial transmission assembly or major overhauls to maintain factory-specified tolerances. It works in concert with the 4661101028: TRANSMISSION HOUSING and the 4661301049: HOUSING II to create a rigid, leak-free enclosure for the rotating components.
Symptoms of Failure
- Persistent oil seepage at the housing joint: When the 4661.185.003 loses its sealing integrity, transmission fluid may weep from the mating surface between the main housing and cover, often mistaken for a gasket failure.
- Abnormal gear engagement noise: A worn or distorted accessory can allow the shift mechanism to drift out of alignment, producing a grinding or clunking sound during gear changes under load.
- Vibration at specific RPM ranges: If this part becomes loose or fatigued, it can cause resonant vibration in the 4661301093: TUBE assembly, particularly noticeable between 1500-2000 RPM in WG94 applications.
- Intermittent gear slipping in reverse: A compromised mounting point can lead to insufficient pressure on the reverse clutch pack, causing momentary loss of drive when backing.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4661.185.003 |
| Material | High-tensile cast iron (GGG-40) |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 142 mm |
| Mounting Hole Pitch | 98 mm (center-to-center) |
| Surface Finish | Zinc-plated with black passivation |
| Operating Temperature Range | -40°C to +120°C |
| Torque Specification | 45 Nm (M10 bolts) |
Compatibility
This genuine ZF accessory is designed for the WG 94 Series, which includes the following transmission models: WG94, WG180, WG200, WG210, WG240, and WG250. It is also compatible with select off-highway variants such as the WG94-2 and WG94-3. The part interfaces directly with the 0631306174: CYLINDRICAL PIN for alignment during installation. Always verify your transmission serial number against the ZF parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101028 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4661301049 | HOUSING II | Secondary cover for valve body area |
| 4661301093 | TUBE | Oil passage conduit between sections |
| 0631306174 | CYLINDRICAL PIN | Dowel pin for precise alignment |
| 0769123894 | TYPE PLATE | Identification tag with serial number |
| 0750100022 | SCREW PLUG | Sealing plug for inspection port |
| 0636302602 | SCREW PLUG | Magnetic drain plug for debris capture |
| 0634100633 | O-RING | Static seal for fluid retention |
| 4661301029 | NOZZLE | Lubrication spray nozzle for gears |
| 4661301027 | NOZZLE | Secondary oil jet for clutch cooling |
