Overview
The ZF 4657.201.133 SCREEN SHEET is a critical filtration component engineered specifically for the WG191 and WG211 transmission series. Positioned within the hydraulic control circuit, this OEM genuine part captures metallic debris and particulate contaminants before they can circulate through the valve body and clutch assemblies. By maintaining fluid cleanliness, the screen sheet ensures consistent hydraulic pressure delivery and protects precision-machined surfaces from abrasive wear. The SKU 4657.201.133 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and reliable sealing performance in high-cycle industrial applications.
Symptoms of Failure
- Erratic shift timing or harsh engagement – A clogged screen sheet restricts oil flow to the 4657120005: PRESSURE REGULATOR, causing delayed or abrupt gear changes.
- Intermittent transmission overheating – Debris accumulation reduces heat exchanger efficiency, leading to elevated sump temperatures during sustained operation.
- Low hydraulic pressure warnings – A ruptured or collapsed screen sheet allows unfiltered oil to bypass the 0501211384: VALVE, triggering pressure drop alarms on the ECU.
- Audible whining from the pump – Starvation caused by a blocked screen forces the oil pump to cavitate, producing a high-pitched noise under load.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.201.133 |
| Material | Stainless steel mesh with reinforced polymer frame |
| Mesh Size | 100 micron nominal (150 micron absolute) |
| Overall Dimensions | 180 mm x 120 mm x 8 mm |
| Weight | 0.14 kg (0.31 lbs) |
| OEM Reference | ZF 4657.201.133 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This screen sheet is a direct replacement for ZF WG180, WG190, WG191, WG200, and WG211 series transmissions used in off-highway trucks, wheel loaders, and agricultural tractors. It interfaces with the main control bore and works in conjunction with the 0630532183: INDENTED RING to create a positive seal. For complete hydraulic circuit restoration, always pair this screen with a new 4656306145: PISTON to prevent cross-contamination from worn sealing surfaces.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Maintains stable hydraulic pressure across all operating conditions |
| 0501211384 | VALVE | Directs oil flow to clutch packs and torque converter |
| 0630532183 | INDENTED RING | Provides axial retention for screen sheet assembly |
| 4656306145 | PISTON | Converts hydraulic force into mechanical clutch engagement |
| 0732042767 | COMPRESSION SPRING | Returns piston to neutral position when de-energized |
| 0631612064 | SET SCREW | Locks valve bore components in place |
| 0631610026 | SET SCREW | Secures pressure regulator adjustment |
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear train and hydraulics |
| 4657301130 | HOUS.FRONT SECT | Front section of split housing for pump mounting |
| 4657301131 | HOUSING REAR PART | Rear section housing output shaft and PTO |
Frequently Asked Questions
Q: How often should the ZF 4657.201.133 screen sheet be replaced?
A: ZF recommends replacing this screen sheet every 2,000 operating hours or during any major transmission overhaul. If you observe metallic particles in the oil filter, immediate replacement is advised to prevent damage to downstream components.
Q: Can I clean and reuse the screen sheet instead of replacing it?
A: No. The mesh is a single-use, non-cleanable element. Attempting to clean it may damage the fine wire weave, allowing debris to bypass the filter. Always install a new OEM genuine part for reliable protection.
Q: Will this part fit the ZF WG200 series with a different housing?
A: Yes, the 4657.201.133 is compatible with WG200 transmissions when used with the correct 4657301130: HOUS.FRONT SECT. Verify your housing casting number before ordering to ensure proper alignment of the retaining groove.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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