Overview
The ZF 0501.333.903 COVER is a critical OEM genuine housing component designed to seal and protect the internal gear train within heavy-duty ZF transmissions used in construction machinery. Positioned on the transmission casing, this cover prevents contamination ingress and maintains proper lubricant pressure. The SKU 0501.333.903 is precision-engineered to withstand high torque loads and thermal expansion, ensuring the differential assembly remains securely enclosed. When installed alongside the 2093109024 DIFFERENTIAL, it forms a sealed unit that protects the 0750117075 TAPER ROLLER BEARING from debris and lubricant loss.
Symptoms of Failure
- Oil seepage around the transmission housing – A cracked or warped cover leads to visible fluid leaks, especially after prolonged operation in dusty environments.
- Gear grinding or whining noise during load shifts – Loss of structural integrity allows the 2093209095 DIFFERENTIAL to misalign, causing abnormal contact patterns.
- Contaminated transmission fluid – A compromised seal permits dirt and moisture to enter, accelerating wear on the 2093309071 DIFF.HOUSING and internal bearings.
- Vibration at the driveline – A loose or deformed cover fails to dampen harmonic oscillations, leading to premature failure of the differential assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.333.903 |
| Material | High-grade cast iron (GGG-40) |
| Weight | 4.2 kg (9.26 lbs) |
| Outer Diameter | 280 mm |
| Bolt Hole Pattern | 8 x M12 on 240 mm PCD |
| OEM Reference | ZF 0501.333.903 |
| Seal Type | Integrated O-ring groove |
Compatibility
This cover is engineered for ZF heavy-duty transmission families commonly deployed in wheel loaders, graders, and excavators. It directly fits the WG180 and WG200 series, as well as the WG310 and ERGO-POWER 6HP models used in construction machinery. Always verify the bolt pattern and housing depth against your specific transmission variant before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque to the axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads in the differential |
| 2093209095 | DIFFERENTIAL | Secondary differential for multi-axle drive |
| 2093309071 | DIFF.HOUSING | Encloses the differential gear set |
| 0631100223 | SPRING PIN | Secures gear alignment during assembly |
| 0730300820 | THRUST WASHER | Reduces axial friction in the differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power from differential to axle |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hub |
| 5838300811 | THRUST WASHER | Prevents gear end-play in the housing |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for torque splitting |
Frequently Asked Questions
Q: Can the 0501.333.903 cover be reused after a transmission rebuild?
A: ZF recommends replacing the cover with a new OEM unit during any major overhaul, as thermal cycling can cause micro-cracks that are not visible to the naked eye.
Q: What torque specification should be used for the mounting bolts?
A: Tighten the M12 bolts to 80 Nm (59 ft-lbs) in a cross-pattern sequence, using a thread-locking compound rated for oil immersion.
Q: Does this cover fit the ZF 6HP26 transmission?
A: No. The 0501.333.903 is designed exclusively for construction machinery transmissions (WG180/WG200 series) and is not compatible with passenger car 6HP units.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
