Overview
The ZF 2097.311.057 COVER RING is a precision-engineered OEM genuine component designed to seal and protect the differential housing assembly in heavy-duty construction machinery transmissions. This cover ring sits at the interface between the axle housing and the differential carrier, preventing lubricant loss and shielding internal gears from abrasive contaminants. As part number 2097.311.057, it ensures a tight, vibration-resistant seal that maintains optimal oil pressure within the transmission system. When installed alongside a 2093109024: DIFFERENTIAL or a 2093209095: DIFFERENTIAL, this cover ring is critical for maintaining drivetrain integrity under extreme loads.
Symptoms of Failure
- Oil seepage around the differential housing: A worn or cracked cover ring allows transmission fluid to escape, leaving visible wet spots on the housing exterior. This is a common indicator of seal degradation.
- Gear whining or grinding noises: When the cover ring fails, debris enters the differential, causing accelerated wear on gears. Operators may hear a distinct whine during turns or under load.
- Reduced hydraulic pressure in the transmission: A compromised seal leads to pressure loss, resulting in sluggish gear engagement or delayed clutch response in ZF powershift units.
- Contaminated transmission fluid: Dirt and moisture ingress through a failed cover ring will darken the oil and may cause sludge buildup, detectable during routine fluid checks.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2097.311.057 |
| Material | High-grade steel with nitrile rubber seal |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter | 130 mm (approx.) |
| Thickness | 8 mm |
| Weight | 0.45 kg |
| OEM Reference | ZF 2097.311.057 |
| Torque Rating | 120 Nm (mounting bolts) |
Compatibility
This cover ring is engineered for ZF heavy-duty transmissions commonly found in wheel loaders, graders, and dump trucks. It is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG250 series. It also fits select ZF 4WG-200 and ZF 6WG-250 powershift units. For optimal performance, always pair this part with a 0750117075: TAPER ROLLER BEARING and a 2093309071: DIFF.HOUSING to ensure proper alignment and load distribution.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque to drive axles |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating differential shafts |
| 2093209095 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures cover ring alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction in differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Controls end-play in gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for torque splitting |
Frequently Asked Questions
Q: Can I reuse the ZF 2097.311.057 cover ring after removal?
No. This is a single-use sealing component. Reusing it risks oil leaks and contamination. Always install a new OEM cover ring during differential service.
Q: What torque should I apply to the cover ring bolts?
ZF recommends 120 Nm for the mounting bolts. Use a calibrated torque wrench and apply thread locker to prevent loosening under vibration.
Q: Does this cover ring fit ZF 4WG-200 transmissions?
Yes, it is compatible with ZF 4WG-200, 6WG-250, and WG180/WG200 series. Always verify your housing part number before installation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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