Overview
The ZF 4651.301.035 SCREEN SHEET is a critical filtration component engineered for the WG 100 Series transmission family. This OEM genuine part sits within the hydraulic circuit, positioned directly before the main valve body assembly, to capture particulate contaminants from the transmission fluid. By ensuring only clean oil reaches precision-machined components like the 4651101006: TRANSMISSION HOUSING, this screen sheet prevents abrasive wear and maintains consistent hydraulic pressure. The SKU 4651.301.035 is manufactured to ZF’s exacting tolerances, guaranteeing a perfect seal against bypass leakage.
Symptoms of Failure
- Erratic shift timing or harsh engagement: A clogged screen sheet restricts oil flow to the valve body, causing delayed or jarring gear changes. This is a common symptom when the 4651.301.035 becomes saturated with debris.
- Intermittent transmission overheating: Reduced fluid circulation due to a blocked screen forces the transmission to work harder, generating excess heat. Operators often notice this during prolonged low-speed operation.
- Low hydraulic pressure warnings: As the screen sheet obstructs flow, the transmission control unit may trigger pressure fault codes. This can mimic failures in the 4651301034: HOUSING assembly.
- Whining or cavitation noise from the pump: Starvation caused by a restricted screen sheet forces the pump to draw fluid under vacuum, producing audible noise. Immediate replacement is recommended to avoid pump damage.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4651.301.035 |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Micron Rating | 125 µm (nominal) |
| Overall Dimensions | 180 mm x 95 mm x 8 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 4651.301.035 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This screen sheet is specifically designed for the ZF WG 100 Series, including the WG100, WG120, and WG150 models. It is also compatible with the WG180 and WG200 transmissions when used in conjunction with the correct 0634303928: O-RING for sealing. For applications requiring a different flow rate, consider the alternative 4651301013: HOUSING variant. Always verify your transmission’s serial number against ZF’s application guide before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101006 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4651301034 | HOUSING | Valve body housing assembly |
| 0634303928 | O-RING | Seal for screen sheet mounting flange |
| 4651301013 | HOUSING | Alternate valve body housing |
| 4651301015 | SCREEN SHEET | Alternative mesh variant for WG200 |
| 0630361028 | SEALING CAP | Port closure cap for test points |
| 4475280060 | SCREW PLUG | Drain port plug with sealing washer |
| 0634303312 | O-RING | Seal for screw plug interface |
| 0630361063 | SEALING CAP | High-temperature port cap |
| 4645301027 | BRACKET | Mounting bracket for screen sheet retention |
