Overview
This genuine ZF 5838.300.826 COVER serves as a critical sealing and protective component within the differential assembly of heavy-duty construction machinery transmissions. Positioned on the housing of the final drive, this OEM part prevents lubricant contamination and maintains internal pressure stability. The SKU 5838.300.826 is engineered to withstand extreme torque loads and thermal cycling common in wheel loaders, graders, and dump trucks. When paired with a 5838109012: DIFFERENTIAL, it ensures precise alignment of the gear set, while the 0750117075: TAPER ROLLER BEARING relies on this cover for correct preload retention.
Symptoms of Failure
- Oil seepage around the differential housing: A worn or cracked cover allows gear oil to escape, leading to low lubricant levels and eventual gear damage.
- Metallic grinding noise during turns: When the cover loses structural integrity, the 2093209023: DIFFERENTIAL components can shift, causing abnormal contact between bevel gears.
- Vibration in the driveline under load: A deformed cover disrupts the mounting surface for the 5838300626: DIFFERENTIAL HOUSING, creating axial play that translates into chassis vibration.
- Contaminated transmission fluid: Cracks in the cover allow dirt and moisture ingress, accelerating wear on internal bearings and gears.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.300.826 |
| Material | High-tensile cast iron (GGG-40) |
| Outer Diameter | 285 mm |
| Bolt Hole Pitch Circle | 250 mm (8 holes) |
| Weight | 3.2 kg |
| OEM Reference | ZF 5838.300.826 |
| Surface Treatment | Phosphate coating for corrosion resistance |
Compatibility
This cover is designed for ZF heavy-duty transmissions commonly found in construction machinery. It directly fits the following ZF models: WG180, WG200, WG210, and WG250 series. It is also compatible with select variants of the ZF 4WG-200 and ZF 5WG-210 transmissions used in articulated dump trucks and wheel loaders. Always verify the differential housing flange pattern before installation, as the 5838300626: DIFFERENTIAL HOUSING must match the cover bolt configuration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on differential shafts |
| 2093209023 | DIFFERENTIAL | Alternative differential assembly for higher torque ratings |
| 5838300626 | DIFFERENTIAL HOUSING | Main casing that encloses the differential gear set |
| 0631329088 | SPRING PIN | Secures differential gear shafts in position |
| 5838300811 | THRUST WASHER | Reduces axial friction between differential gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shafts |
| 5838300633 | AXLE | Driveshaft component connecting differential to wheel hub |
| 5838300753 | THRUST WASHER | Spacer washer for differential side gears |
| 5838300818 | THRUST WASHER | Wear-resistant washer for pinion gear support |
Frequently Asked Questions
Q: Can I reuse the old gasket when installing this cover?
A: No. ZF recommends always replacing the gasket or sealant when installing a new cover. The 5838.300.826 cover requires a fresh anaerobic sealant to prevent oil leaks at the housing interface.
Q: Will this cover fit a ZF 4WG-180 transmission?
A: Yes, the 5838.300.826 cover is compatible with the ZF 4WG-180 series, provided the differential housing (part 5838300626) has the same 8-bolt pattern. Verify the housing flange diameter before ordering.
Q: What torque should I use for the cover bolts?
A: Tighten the M10 bolts to 45 Nm in a cross-pattern sequence. Over-torquing can distort the cover and cause premature failure of the taper roller bearing (0750117075).
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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