Overview
The ZF 4657.354.057 PUMP SHAFT is a critical rotating component within the BP210, WG190, and WG210 series transmissions. This genuine OEM part transmits torque directly from the gear pump to the transmission’s hydraulic system, ensuring consistent oil flow for clutch engagement and lubrication. As the central driver for the pump assembly, the shaft sits inside the front housing section and interfaces with the pump rotor. The SKU 4657.354.057 is precision-machined to ZF’s exacting tolerances, making it a direct replacement for worn or damaged shafts in heavy-duty industrial drivelines.
Symptoms of Failure
When the 4657.354.057 pump shaft begins to fail, operators often notice erratic hydraulic pressure leading to delayed gear engagement. A second common symptom is visible oil seepage around the pump housing seal, caused by shaft wear that compromises the sealing surface. You may also experience intermittent transmission slipping under load, particularly during low-speed maneuvers, as the pump cannot maintain adequate flow. Finally, unusual whining or grinding noises from the pump area indicate the shaft’s splines or bearing journals have worn beyond specification.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (OEM) | 4657.354.057 |
| Material | Case-hardened alloy steel (20MnCr5) |
| Overall Length | 185 mm (approx.) |
| Shaft Diameter (bearing journal) | 25 mm |
| Spline Count | 14-tooth involute spline |
| Weight | 0.85 kg (1.87 lbs) |
| Surface Finish | Ground and polished (Ra ≤ 0.4 µm) |
| Heat Treatment | Carburized and tempered to HRC 58-62 |
Compatibility
This genuine ZF pump shaft is engineered for the BP210, BP230, WG190, WG210, and WG230 transmission families. It is a direct fit for models including the WG180, WG200, WG210, and WG230 series, as well as the BP210 and BP230 units. Always verify the transmission serial number before ordering, as minor design variations exist between early and late production runs.
Related Components
When replacing the pump shaft, it is recommended to inspect and replace adjacent wear items. The shaft operates within the 4657101078: TRANSMISSION HOUSING, which houses the entire pump assembly. The front of the shaft is supported by the 4657201166: HOUS.FRONT SECT, while the rear end aligns with the 4657201168: HOUSING REAR PART and the 4657298101: HOUSING REAR SECTION.
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns pump housing halves |
| 0636100801 | CAP SCREW | Secures pump cover |
| 4656301148 | FIXING PLATE | Locks shaft axial position |
| 4657301032 | SCREEN SHEET | Filters inlet oil (fine mesh) |
| 4657301033 | SCREEN SHEET | Filters inlet oil (coarse mesh) |
| 0636100803 | CAP SCREW | Mounts pump to housing |
Frequently Asked Questions
Q: Can the 4657.354.057 pump shaft be used in a WG180 transmission?
A: Yes, the WG180 shares the same pump shaft design as the WG190 and WG210 series. However, always confirm the spline count and overall length match your specific unit.
Q: What torque should I apply to the cap screws when installing this shaft?
A: For the 0636100801: CAP SCREW, use 45 Nm (33 ft-lbs). For the 0636100803: CAP SCREW, apply 55 Nm (41 ft-lbs). Always use a torque wrench.
Q: Is this part interchangeable with the older 4657.354.056 shaft?
A: No. The 4657.354.057 has a revised spline profile and a longer bearing journal. Using the wrong shaft can cause pump cavitation and premature failure.
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ZF 4657.354.057 PUMP SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.354.057 PUMP SHAFT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This shaft page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 4657.354.057 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657024165
- Documentation reference: 4657024170
- Documentation reference: 4657024305
- Documentation reference: 4657024306
- Illustration section: POWER TAKE OFF
Cross Reference Support
- Cross-reference record available for RFQ review.
Specification Snapshot
| ZF part number | 4657.354.057 |
|---|---|
| Normalized SKU | 4657354057 |
| Part name | PUMP SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: diagram. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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