Overview
The ZF 5838.200.111 OIL DISTRIBUTOR is a precision-machined hydraulic component responsible for directing pressurized transmission fluid to the correct clutch packs and lubrication circuits within ZF heavy-duty powershift transmissions. This OEM genuine part, identified by SKU 5838.200.111, sits directly on the main control valve body or within the rotating clutch drum assembly, acting as a rotary union to ensure consistent oil flow under high torque loads. In construction machinery applications, a failing oil distributor compromises clutch engagement timing and can starve critical bearings of lubrication. This part is frequently replaced alongside the 5838109021: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING during a full transmission overhaul.
Symptoms of Failure
- Erratic clutch engagement or gear slipping under load: When the oil distributor’s sealing lands wear, internal leakage causes clutch pack pressure to drop, resulting in delayed or incomplete shifts.
- Low transmission oil pressure at idle: A worn distributor bore allows fluid to bypass the intended circuits, triggering pressure warnings on the machine’s dash.
- Overheating transmission due to insufficient lubrication: Restricted oil flow to the differential and output shaft bearings leads to elevated sump temperatures and accelerated wear on the 2095209019: DIFFERENTIAL assembly.
- Visible metal debris in the oil filter or magnet: As the distributor wears, fine metallic particles from the hardened steel sleeve contaminate the hydraulic system, often accompanied by a broken 0631329086: SPRING PIN that retains the distributor in its bore.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 5838.200.111 |
| Material | Case-hardened steel (nitrided surface) |
| Outer Diameter | 38.0 mm |
| Overall Length | 112.5 mm |
| Weight | 0.42 kg |
| OEM Reference | ZF 5838.200.111 (genuine) |
| Operating Pressure | 18–22 bar (261–319 psi) |
| Seal Type | PTFE lip seals (pre-installed) |
Compatibility
This oil distributor is engineered for ZF WG series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It is a direct fit for the following transmission models: WG180, WG200, WG210, and WG310. The part also appears in certain ErgoPower (Ecomat) 4HP and 6HP variants used in older construction equipment. Always verify the transmission serial number before ordering, as revisions to the valve body may require the corresponding 5838300817: THRUST WASHER or 5838300682: DIFFERENTIAL AXLE to be replaced simultaneously.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109021 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential pinion shaft |
| 2095209019 | DIFFERENTIAL | Rear differential assembly (heavy-duty) |
| 0631329086 | SPRING PIN | Retains oil distributor in bore |
| 5838300817 | THRUST WASHER | Controls axial play in clutch drum |
| 5838300682 | DIFFERENTIAL AXLE | Output shaft for differential carrier |
| 5838300811 | THRUST WASHER | Clutch pack end clearance shim |
| 5841302064 | THRUST WASHER | Planetary gear thrust surface |
| 5838300812 | SEALING RING | Prevents oil bypass at distributor joint |
| 5838300137 | OUTER CLUTCH DISK | Friction surface for clutch engagement |
