Overview
The ZF 5838.117.020 REAR AXLE HOUS. is a critical structural component engineered for heavy-duty construction machinery drivelines. This OEM genuine part serves as the rigid casing that encloses and protects the differential assembly, axle shafts, and final drive gears within ZF powershift transmissions. Designed to withstand extreme torsional loads and harsh operating environments, the housing ensures precise alignment of internal rotating elements. The SKU 5838.117.020 is precision-machined from high-strength cast iron to maintain dimensional stability under continuous high-torque conditions. As the central load-bearing member of the rear axle system, it directly supports the vehicle’s weight while transferring power from the transmission to the wheels.
Symptoms of Failure
- Hydraulic oil seepage at axle flange: Cracks or porosity in the housing casting often cause gradual oil leaks around the differential mounting surface, leading to low lubricant levels and accelerated gear wear.
- Abnormal whining or grinding noise during turns: A warped or cracked housing misaligns the 5838109007: DIFFERENTIAL assembly, producing metallic grinding sounds that worsen under load.
- Vibration through the chassis at highway speeds: Bearing bore wear in the housing allows the 0750117075: TAPER ROLLER BEARING to shift, creating driveline oscillations that can damage adjacent components.
- Premature tire wear on one side: Structural fatigue in the housing alters rear wheel camber angles, causing uneven tread wear patterns that require frequent tire replacement.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.117.020 |
| Material | High-grade cast iron (GGG-40) |
| Weight | 38.5 kg (84.9 lbs) |
| Overall Length | 620 mm |
| Flange Bolt Pattern | 12 x M16 on 180 mm PCD |
| Axle Tube Diameter | 110 mm |
| OEM Reference | ZF 5838.117.020 |
| Surface Treatment | Phosphate coating + black paint |
Compatibility
This rear axle housing is specifically designed for ZF WG series powershift transmissions used in construction machinery. Primary compatible models include the WG180, WG200, and WG210 series. It also fits select ZF 4WG-200 and ZF 5WG-200 configurations found in wheel loaders, graders, and compact excavators. Always verify the housing casting number against your existing unit before installation. The housing works in conjunction with the 2095209019: DIFFERENTIAL carrier and is secured using the 0631329086: SPRING PIN for precise alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109007 | DIFFERENTIAL | Distributes torque between rear wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2095209019 | DIFFERENTIAL | Heavy-duty differential assembly |
| 0631329086 | SPRING PIN | Locks housing to axle flange |
| 5838300817 | THRUST WASHER | Controls axial play in differential |
| 5838300682 | DIFFERENTIAL AXLE | Transfers power to wheel hubs |
| 5838300811 | THRUST WASHER | Reduces friction on side gears |
| 5841302064 | THRUST WASHER | Spacer for differential pinion |
| 5838300137 | OUTER CLUTCH DISK | Friction surface for locking differential |
| 5838300138 | INNER CLUTCH DISK | Steel separator for clutch pack |
