Overview
The ZF 5838.300.808 REAR AXLE HOUS. is a critical structural component designed to encase and protect the differential and final drive assembly in heavy-duty construction machinery transmissions. This OEM genuine part serves as the rigid foundation that supports axle shafts, bearings, and gear sets while maintaining precise alignment under extreme torque loads. As a key element in the drivetrain, the housing ensures that power from the transmission is efficiently transferred to the wheels. The SKU 5838.300.808 is precision-machined to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in demanding off-highway applications.
Symptoms of Failure
- Oil leaks from axle housing seals: When the housing develops cracks or wear at the seal mating surfaces, you may notice gear oil pooling under the vehicle, particularly after extended operation. This is a common sign of fatigue in heavy-use construction equipment.
- Unusual whining or grinding noises from the rear axle: A compromised housing can allow misalignment of internal components, leading to metal-on-metal contact. Operators often report a distinct whining sound during turns or under load.
- Vibration during acceleration or deceleration: If the housing has suffered impact damage or stress fractures, the differential assembly may shift, causing noticeable driveline shudder. This symptom frequently accompanies worn 0750117075: TAPER ROLLER BEARING units.
- Contaminated gear oil with metallic debris: Internal cracking of the housing can shed metal particles into the lubricant, which accelerates wear on the 5838109007: DIFFERENTIAL and other rotating parts.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 5838.300.808 |
| Material | High-strength ductile iron (GJS-500-7) |
| Weight | Approx. 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Mounting Bolt Pattern | 8 x M16 bolts on 180 mm PCD |
| OEM Reference | ZF 5838.300.808 |
| Seal Bore Diameter | 110 mm |
Compatibility
This rear axle housing is engineered for ZF’s WG series power shift transmissions commonly used in wheel loaders, graders, and heavy forklifts. It is a direct replacement for models including the WG180, WG200, and WG211 series. The housing also integrates with the 2095209019: DIFFERENTIAL assembly found in these transmissions. For proper installation, ensure the 0631329086: SPRING PIN is correctly aligned during reassembly to prevent rotational movement of internal components.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109007 | DIFFERENTIAL | Distributes torque between wheels while allowing speed differences during turns |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on the differential carrier |
| 2095209019 | DIFFERENTIAL | Alternate differential assembly for WG200 series transmissions |
| 0631329086 | SPRING PIN | Secures differential gears to the carrier shaft |
| 5838300817 | THRUST WASHER | Reduces axial friction between differential gears and housing |
| 5838300682 | DIFFERENTIAL AXLE | Transfers rotational force from ring gear to wheel hubs |
| 5838300811 | THRUST WASHER | Provides wear surface for side gears in the differential |
| 5841302064 | THRUST WASHER | High-load washer for final drive planetary sets |
| 5838300137 | OUTER CLUTCH DISK | Steel friction plate for differential lock engagement |
| 5838300138 | INNER CLUTCH DISK | Organic friction plate for differential lock engagement |
