Overview
The ZF 6057.018.650 is a precision-engineered OEM genuine part specifically designed for the WG 190 Series transmission. This component plays a critical role in the hydraulic control system, ensuring precise pressure regulation and fluid distribution within the gearbox. As a factory-original unit, the SKU 6057.018.650 guarantees exact fitment and long-term reliability, reducing the risk of premature wear in heavy-duty industrial applications. It is typically located within the valve body assembly, where it modulates oil flow to maintain consistent shift quality under load.
Symptoms of Failure
When the ZF 6057.018.650 begins to degrade, operators may notice several distinct performance issues. Delayed or harsh shifting is a primary indicator, often caused by inconsistent hydraulic pressure. Oil seepage around the valve body can occur if the sealing surfaces wear, leading to low fluid levels and overheating. Another common symptom is intermittent gear slippage under load, which results from the part failing to maintain proper clutch pack engagement. Finally, erratic transmission response during cold starts may signal that this component is no longer regulating fluid viscosity changes effectively.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 6057.018.650 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions | 85 mm x 45 mm x 30 mm |
| OEM Reference | ZF 6057.018.650 (Genuine) |
| Operating Pressure | 12–18 bar |
| Temperature Range | -30°C to +120°C |
Compatibility
This OEM genuine part is primarily engineered for the ZF WG 190 Series transmission, commonly found in construction and agricultural machinery. It is also compatible with the WG 180 and WG 200 series due to shared hydraulic architecture. Additionally, the 6057.018.650 may be used in select WG 150 and WG 210 models, though cross-referencing the original equipment manufacturer’s parts list is recommended for non-standard applications.
For a complete rebuild, this part is often installed alongside the 4657101080: TRANSMISSION HOUSING, which provides the structural foundation for the valve body. The 4657201167: HOUS.FRONT SECT and 4657201171: HOUSING REAR PART enclose the clutch packs, while the 4657298103: HOUSING REAR SECTION seals the output shaft area. Proper installation of these components ensures leak-free operation and extended service life.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201167 | HOUS.FRONT SECT | Front section enclosing clutch assembly |
| 4657201171 | HOUSING REAR PART | Rear housing for planetary gears |
| 4657298103 | HOUSING REAR SECTION | Output shaft support and sealing |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | Fastener for valve body attachment |
| 4656301148 | FIXING PLATE | Retains hydraulic control valves |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil intake |
| 4657301035 | SCREEN SHEET | Secondary filter for return line |
| 0636100803 | CAP SCREW | High-torque bolt for housing flange |
Frequently Asked Questions
Q: How do I know if the 6057.018.650 needs replacement?
A: If you experience inconsistent shift timing or visible oil residue near the valve body, inspect this part for scoring or deformation. A pressure test below 12 bar typically confirms failure.
Q: Can this part be used in a WG 180 transmission?
A: Yes, the 6057.018.650 is cross-compatible with WG 180 and WG 200 series, provided the hydraulic circuit is identical. Always verify with your OEM service manual before installation.
Q: What is the typical lifespan of this OEM component?
A: Under normal operating conditions with regular fluid changes, the 6057.018.650 can last 4,000–6,000 hours. Contaminated oil or overloading will significantly reduce its service life.
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