Overview
The ZF 5838.300.226 FEED PIPE is a critical OEM genuine component engineered to deliver pressurized hydraulic fluid directly to the lubrication points within the transmission assembly. Positioned internally along the main shaft housing, this precision-machined conduit ensures consistent oil flow to bearings and gear meshes, preventing thermal damage under heavy loads. The SKU 5838.300.226 is specifically designed for ZF’s heavy-duty construction machinery transmissions, where it works in concert with the 5838022003: REAR AXLE and the 5838109001: DIFFERENTIAL to maintain drivetrain integrity. Without this feed pipe, the entire lubrication circuit is compromised, leading to accelerated wear across the assembly.
Symptoms of Failure
- External oil seepage around the transmission housing: A cracked or corroded feed pipe will allow hydraulic fluid to escape, often pooling near the bell housing or axle connection points.
- Intermittent gear slipping under load: Insufficient lubrication pressure caused by a blocked or fractured pipe results in momentary loss of torque transfer, especially during excavation or grading operations.
- Elevated operating temperatures in the differential area: When the feed pipe fails to deliver oil to the 0750117075: TAPER ROLLER BEARING, friction increases, triggering thermal warnings on the machine’s dashboard.
- Metallic debris in the oil filter: A failing pipe can shed internal particles, contaminating the fluid and damaging downstream components like the 5838300128: DIFFERENTIAL HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 5838.300.226 |
| Material | High-tensile steel with corrosion-resistant coating |
| Length | 215 mm (estimated) |
| Outer Diameter | 18 mm |
| Wall Thickness | 2.5 mm |
| Weight | 0.35 kg |
| OEM Reference | ZF 5838.300.226 |
| Thread Type | M14 x 1.5 (both ends) |
Compatibility
This feed pipe is primarily compatible with ZF WG180 and WG200 series transmissions, which are widely deployed in wheel loaders, excavators, and telehandlers. It also fits select models of the ZF 4WG-200 and 5WG-300 families. Always verify the part number against your transmission’s serial plate before installation. For complete drivetrain restoration, consider pairing this pipe with the 0631329086: SPRING PIN and 5838300129: THRUST WASHER to ensure proper alignment and load distribution.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | REAR AXLE | Transfers torque from differential to wheels |
| 5838109001 | DIFFERENTIAL | Distributes power between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads in axle assembly |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329086 | SPRING PIN | Secures feed pipe alignment in housing |
| 5838300129 | THRUST WASHER | Reduces axial play in differential assembly |
| 5838300130 | THRUST WASHER | Secondary axial load distribution |
| 5838300131 | AXLE BEVEL GEAR | Transfers power at 90-degree angle |
| 5838300132 | COMPENS. STUB AXLE | Compensates for axle misalignment |
| 5838300133 | COMPENS. STUB AXLE | Secondary misalignment compensation |
