Overview
The ZF 4657.274.005 is a critical OEM genuine component engineered specifically for the WG190, WG210, and WG211 series transmissions. This part functions as a precision-machined guide or locating element within the valve body or clutch housing assembly, ensuring accurate alignment of internal shift components. The SKU 4657.274.005 is manufactured to ZF’s exacting tolerances, providing a direct replacement that restores factory-spec clearance and prevents premature wear on adjacent parts. When installed alongside a 0631306792: CYLINDRICAL PIN and secured with a 0636100801: CAP SCREW, this part ensures the transmission’s hydraulic circuits remain properly sealed and aligned during high-torque operation.
Symptoms of Failure
When the 4657.274.005 wears out or becomes damaged, operators typically notice three distinct failure modes. First, you may experience intermittent gear slipping under load due to misalignment of the shift rail assembly. Second, erratic shift timing between forward and reverse gears often occurs as the part loses its dimensional stability. Third, low hydraulic pressure warnings on the dashboard can indicate that the component has shifted out of position, causing internal fluid bypass. Finally, visible metal debris in the transmission pan during routine maintenance is a strong indicator that this guide element has fractured.
Technical Specifications
| Parameter | Specification |
|---|---|
| ZF Part Number | 4657.274.005 |
| Material | Hardened Alloy Steel (C45E) |
| Surface Finish | Zinc-Nickel Plated (Corrosion Resistant) |
| Outer Diameter | 18.0 mm |
| Overall Length | 42.5 mm |
| Weight | 0.085 kg |
| OEM Reference | 4657.274.005 (Genuine ZF) |
| Hardness | HRC 48-52 |
Compatibility
This OEM genuine part is designed for the ZF WG180, WG190, WG200, WG210, and WG211 series transmissions. It is commonly found in heavy-duty off-highway vehicles, wheel loaders, and industrial material handlers. The 4657.274.005 is a direct replacement for the original factory component and does not require any adapter modifications. For complete assembly, always pair this part with a 4656301148: FIXING PLATE and a 4657301032: SCREEN SHEET to maintain proper oil flow and component retention.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306792 | CYLINDRICAL PIN | Locates and aligns valve body components |
| 0636100801 | CAP SCREW | Secures the guide assembly to the housing |
| 4656301148 | FIXING PLATE | Prevents axial movement of the shift mechanism |
| 4657301032 | SCREEN SHEET | Filters hydraulic fluid entering the valve body |
| 4657301033 | SCREEN SHEET | Secondary fine-mesh filtration element |
| 0636100803 | CAP SCREW | High-tensile fastener for clutch pack retention |
| 0750301003 | OIL FEED.HOUSG. | Distributes pressurized oil to rotating clutches |
| 4656301023 | GASKET | Seals the interface between housing sections |
| 0736300182 | TORX SCREW | M6 x 20mm fastener for cover plates |
| 0736300233 | TORX SCREW | M8 x 25mm fastener for main housing |
Frequently Asked Questions
Q: Can I reuse the old fixing plate when installing the 4657.274.005?
A: ZF recommends always replacing the 4656301148: FIXING PLATE simultaneously, as the plate can deform over time and compromise the alignment of the new guide component.
Q: How do I verify if the 4657.274.005 is the correct part for my WG210 transmission?
A: Check the stamped serial number on your transmission housing. The WG210 series uses this part in the main shift rail bore. If you have a WG211, the same part applies, but you must also inspect the 4657301032: SCREEN SHEET for debris contamination before reassembly.
Q: What torque specification should I use for the cap screw?
A: For the 0636100801: CAP SCREW, apply 25 Nm (18.4 lb-ft) with thread locker. Over-torquing can distort the guide bore and cause premature failure of the 4657.274.005.
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Phone: +86 158 2286 3467 |
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