Overview
The ZF 0750.131.021 PROTECTION GRILL is a critical debris barrier engineered for the intake or ventilation ports of heavy-duty construction machinery transmissions. This OEM genuine part prevents foreign objects, such as stones, mud, and fibrous debris, from entering the transmission housing and damaging internal rotating assemblies. Positioned directly on the transmission casing, the grill ensures consistent airflow for cooling while maintaining a sealed environment. The SKU 0750.131.021 is precision-molded to fit ZF gearbox interfaces, offering a direct replacement that restores factory-level protection against contamination.
Symptoms of Failure
- Transmission overheating due to blocked airflow: When the protection grill becomes clogged with debris or is physically damaged, airflow is restricted, causing the transmission fluid to overheat and degrade lubrication properties.
- Visible debris ingress into the housing: A cracked or missing grill allows dirt and grit to enter the assembly, often seen as contamination around the 4108101112: HOUSING or 4108201177: HOUSING.
- Unusual grinding noises from the gear train: Foreign particles bypassing a failed grill can score gears and bearings, producing metallic sounds during operation.
- Oil leaks near the ventilation port: A warped or broken grill can compromise the seal interface, leading to fluid weeping around the 0636302056: SCREW PLUG or adjacent covers.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0750.131.021 |
| Material | High-impact nylon composite with UV stabilizer |
| Overall Dimensions | 180 mm x 120 mm x 25 mm |
| Mesh Opening Size | 4 mm x 4 mm |
| Weight | 0.18 kg |
| OEM Reference | ZF 0750.131.021 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This protection grill is designed for ZF WG-series and ERGOPOWER transmissions commonly used in wheel loaders, excavators, and telehandlers. It is a direct fit for models including WG180, WG200, WG210, and ERGOPOWER 3.5. The grill mounts securely to the transmission housing using factory bolt patterns, often working in conjunction with the 4108301304: BEARING COVER to shield sensitive components. Always verify your transmission serial number against the OEM parts catalog to confirm compatibility.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101112 | HOUSING | Encloses the gear train and supports shaft alignment |
| 4108201177 | HOUSING | Secondary casing section for torque converter area |
| 0636302056 | SCREW PLUG | Seals fluid drain or fill ports |
| 4108301304 | BEARING COVER | Protects output shaft bearing from contamination |
| 4108306173 | GASKET | Provides leak-proof seal between mating surfaces |
| 0750110040 | SHAFT SEAL | Prevents fluid leakage along rotating shafts |
| 4108102042 | INPUT | Transfers engine torque into the transmission |
| 4108302099 | PLANET CARRIER | Holds planetary gears for torque multiplication |
| 4108302007 | BEARINGSHEET | Thrust washer for axial load management |
| 0635332196 | BALL BEARING | Supports rotating shafts with low friction |
