Overview
The ZF 4657.373.027 is a precision-engineered OEM genuine component designed for the WG190 and WG210 series transmissions. This part serves as a critical hydraulic control element within the valve body assembly, regulating oil flow to ensure smooth clutch engagement and gear shifts. As an original ZF part, the SKU 4657.373.027 guarantees exact fitment and long-term durability under heavy-duty industrial loads. It works in concert with surrounding fasteners such as the 0636115293: 螺栓 and the 0634313603: O-RING to maintain a sealed, pressurized environment inside the transmission.
Symptoms of Failure
- Erratic shifting or gear slipping under load: When the 4657.373.027 wears, hydraulic pressure drops, causing delayed or harsh shifts, especially in WG190 and WG210 units.
- Transmission oil leaks near the valve body: A worn sealing surface on this part can lead to external fluid seepage, often mistaken for a gasket failure.
- Intermittent loss of drive in forward gears: Internal wear may cause pressure loss to specific clutches, resulting in temporary power loss during acceleration.
- Increased operating temperature: Restricted oil flow from a degraded 4657.373.027 forces the transmission to run hotter than normal, accelerating wear on other components.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.373.027 |
| Material | Hardened steel with corrosion-resistant coating |
| Weight | 0.45 kg (approx.) |
| Dimensions (L x W x H) | 85 mm x 40 mm x 25 mm |
| OEM Reference | ZF 4657.373.027 |
| Sealing Type | Metal-to-metal with integrated O-ring groove |
Compatibility
This genuine ZF part is specifically engineered for the WG 190 Series and WG 210 Series transmissions. It is also compatible with the WG180 and WG200 models when used in the same hydraulic circuit position. Always verify the valve body configuration before installation. For proper assembly, pair this component with the 0631306816: CYLINDRICAL PIN for alignment and the 0636100801: CAP SCREW for secure fastening.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures valve body components |
| 0634313603 | O-RING | Provides hydraulic seal |
| 0631306816 | CYLINDRICAL PIN | Aligns mating parts |
| 0636100801 | CAP SCREW | Fastens cover plates |
| 4681301015 | FIXING PLATE | Holds screen in position |
| 4681301016 | SCREEN SHEET | Filters debris from oil |
| 4681301017 | SCREEN SHEET | Secondary filtration layer |
| 0636100803 | CAP SCREW | Alternate fastening for deep bores |
| 0750100162 | OIL FEED.HOUSG. | Directs oil to clutch packs |
| 4656301023 | GASKET | Prevents external leaks |
Frequently Asked Questions
Q: Can I install the 4657.373.027 without replacing the O-ring?
A: It is strongly recommended to replace the 0634313603: O-RING simultaneously, as old seals can cause immediate leaks and compromise the new part’s performance.
Q: What tools are needed for replacement?
A: Standard hex keys and a torque wrench are required. Ensure the 0636100801: CAP SCREW is torqued to ZF specifications (typically 25 Nm) to avoid thread damage.
Q: How do I confirm this part fits my WG210 transmission?
A: Check the valve body casting number against the ZF parts catalog. The 4657.373.027 is used in both WG190 and WG210 series, but verify the presence of the 0631306816: CYLINDRICAL PIN alignment hole in your unit.
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Phone: +86 158 2286 3467 |
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