Overview
The ZF 4657.201.031 SCREEN SHEET is a critical filtration component engineered for the WG 211 Series transmission. Positioned within the hydraulic control circuit, this OEM genuine part ensures that transmission fluid remains free of particulate contaminants before it reaches precision valves and clutch packs. The SKU 4657.201.031 acts as a primary barrier, trapping debris that would otherwise accelerate wear on internal assemblies. By maintaining fluid cleanliness, this screen sheet directly supports consistent shift quality and extends the service life of the entire gearbox.
Symptoms of Failure
- Erratic or delayed gear engagement: A clogged screen sheet restricts fluid flow, causing hesitation when shifting from neutral to drive or reverse.
- Intermittent transmission overheating: Debris accumulation forces the pump to work harder, generating excess heat that may trigger warning lights.
- Contaminated fluid recirculation: When the screen sheet tears, particles bypass filtration, leading to accelerated wear on the 4657120005: PRESSURE REGULATOR and 0501211384: VALVE.
- Low hydraulic pressure warnings: Blocked screen sheets starve the system of oil, causing pressure drops that affect clutch application.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.201.031 |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Micron Rating | 100 µm (estimated) |
| Overall Dimensions | 180 mm x 120 mm x 8 mm |
| Weight | 0.35 kg |
| OEM Reference | ZF 4657.201.031 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This screen sheet is specifically designed for the ZF WG 211 Series, but it also fits select models in the WG180, WG200, and WG250 families where the hydraulic control layout matches. It is commonly used in off-highway vehicles, construction equipment, and heavy-duty trucks. For proper installation, always pair this part with a new 0630532183: INDENTED RING to ensure a leak-proof seal, and verify clearance with the 4656306145: PISTON assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Controls hydraulic pressure to clutches and bands |
| 0501211384 | VALVE | Directs fluid flow for shift timing |
| 0630532183 | INDENTED RING | Secures screen sheet in housing groove |
| 4656306145 | PISTON | Applies force to clutch packs |
| 0732042767 | COMPRESSION SPRING | Provides return force for valves |
| 0631612064 | SET SCREW | Locks adjustment mechanisms |
| 0631610026 | SET SCREW | Secures cover plates |
| 4657101048 | TRANSMISSION HOUSING | Main structural casing |
| 4657301061 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657301062 | HOUSING REAR PART | Rear section of transmission housing |
