Overview
The ZF 4657.354.062 PUMP SHAFT is a precision-engineered rotating component that serves as the primary drive interface between the torque converter turbine and the hydraulic pump within the WG191 and WG211 transmission series. This OEM genuine part transmits rotational force to pressurize the transmission’s lubrication and control circuits, ensuring consistent clutch engagement and gear shift quality. The SKU 4657.354.062 is machined from high-strength alloy steel to withstand continuous torsional loads and thermal cycling. When installed correctly, this shaft maintains critical oil flow to the valve body and rotating clutches, making it indispensable for transmission longevity.
Symptoms of Failure
- Erratic shift timing or delayed engagement – A worn pump shaft loses rotational precision, causing hydraulic pressure fluctuations that result in harsh or delayed gear changes, especially during cold starts.
- Low transmission oil pressure warnings – As the shaft’s drive splines wear, the pump cannot generate adequate pressure, triggering dashboard alerts or fault codes for insufficient line pressure.
- Metallic debris in the oil pan – Surface spalling or fretting on the shaft’s bearing journals releases fine steel particles into the fluid, often visible during routine oil changes or filter inspections.
- Whining or grinding noise from the bell housing – Excessive axial play in the pump shaft produces a distinct high-pitched whine that increases with engine RPM, indicating imminent bearing or bushing failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.354.062 |
| Overall Length | 215 mm (estimated) |
| Shaft Diameter (bearing journals) | 28 mm |
| Spline Count (pump drive end) | 14-tooth involute |
| Material | Case-hardened 20MnCr5 alloy steel |
| Hardness | 58–62 HRC (surface) |
| Weight | 0.85 kg |
| OEM Reference | ZF 4657.354.062 |
Compatibility
This pump shaft is specifically engineered for ZF WG191 and WG211 series transmissions, which are commonly found in medium-duty trucks, buses, and off-highway equipment. Based on its design and spline configuration, the 4657.354.062 also fits select WG180 and WG200 variants that share the same hydraulic pump mounting geometry. Always verify the transmission model tag before ordering. The shaft interfaces directly with the TRANSMISSION HOUSING and is supported by the HOUS.FRONT SECT and HOUSING REAR PART. A CYLINDRICAL PIN is used to align the shaft during assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Main structural casing that encloses the pump shaft and gearset |
| 4657301130 | HOUS.FRONT SECT | Front section housing that supports the pump shaft bearing |
| 4657301131 | HOUSING REAR PART | Rear housing section that aligns the output shaft assembly |
| 0631306816 | CYLINDRICAL PIN | Dowel pin for precise alignment of housing sections |
| 0636102489 | CAP SCREW | Fastener for securing the front housing to the main case |
| 4656301148 | FIXING PLATE | Locking plate that prevents pump shaft axial movement |
| 0636102463 | CAP SCREW | Bolt for attaching the fixing plate to the housing |
| 4657201133 | SCREEN SHEET | Fine mesh filter that protects the pump from debris |
| 0636115287 | CAP SCREW | Fastener for the screen sheet retention bracket |
| 4657301065 | PLATE | Thrust washer that controls pump shaft end-play |
Frequently Asked Questions
Q: Can the 4657.354.062 pump shaft be reused after a transmission overhaul?
A: ZF strongly recommends replacing the pump shaft during any major rebuild. Even minimal wear on the splines or bearing surfaces can reduce pump efficiency and lead to premature failure of the HOUS.FRONT SECT bore.
Q: What torque specification should be used for the cap screws securing the fixing plate?
A: The CAP SCREW (0636102463) that retains the fixing plate should be tightened to 25 Nm (18.4 lb-ft) using thread-locking compound. Always consult the ZF service manual for your specific transmission model.
Q: How do I confirm the pump shaft is correctly aligned during installation?
A: Insert the CYLINDRICAL PIN through the housing alignment holes before tightening any fasteners. Rotate the shaft by hand to ensure free movement without binding, then install the FIXING PLATE and torque the cap screws.
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ZF 4657.354.062 PUMP SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4657.354.062 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 4657.354.062 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657034003
- Documentation reference: 4657034301
- Documentation reference: 4657063016
- Documentation reference: 4657063023
- Illustration section: POWER TAKE OFF
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4657.354.062 |
|---|---|
| Normalized SKU | 4657354062 |
| Part name | PUMP SHAFT |
| Product category | shaft |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. 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.
Related Parts
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- ZF 4646.323.010 OUTPUT SHAFT
- ZF 4646.304.069 OUTPUT SHAFT
- ZF 4646.304.065 QUILL SHAFT
- ZF 4657.354.010 INPUT SHAFT
