Overview
The ZF 4681.354.001 PUMP SHAFT is a critical OEM genuine component engineered for the BP210, BP230, and WG190 series transmissions. This precision-machined shaft drives the hydraulic pump within the transmission housing, ensuring consistent oil flow for clutch actuation and lubrication. The SKU 4681.354.001 sits directly within the pump drive assembly, transferring rotational force from the gear train to the hydraulic pump gear. When this shaft is compromised, the entire hydraulic circuit loses pressure, leading to operational failures. For optimal sealing and alignment, this shaft interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT.
Symptoms of Failure
- Intermittent gear slipping under load: A worn pump shaft cannot maintain hydraulic pressure, causing clutches to slip during acceleration or hill climbs.
- Low hydraulic pressure warning or erratic shifting: The shaft’s splines or bearing surface wear down, reducing pump output and triggering pressure alarms.
- Visible oil leaks near the pump housing: A damaged shaft seal surface allows transmission fluid to escape, often pooling beneath the bell housing.
- Whining or grinding noise from the pump area: Excessive play in the shaft creates metal-on-metal contact, producing audible distress during operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4681.354.001 |
| Material | Case-hardened alloy steel (16MnCr5) |
| Overall Length | 195.0 mm |
| Shaft Diameter (bearing journal) | 28.0 mm |
| Spline Count | 14-tooth involute spline |
| Weight | 0.85 kg |
| OEM Reference | ZF 4681.354.001 |
| Hardness | 58-62 HRC (surface) |
Compatibility
This pump shaft is a direct fit for ZF BP210, BP230, and WG190 series transmissions. It is also compatible with the WG210 series when used with the correct HOUSING REAR PART and HOUSING REAR SECTION. Additional compatible models include WG180 and WG200 variants, provided the pump drive assembly matches the spline configuration. Always verify the housing bore condition before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101088 | TRANSMISSION HOUSING | Encloses the gear train and supports the pump shaft bearing |
| 4657201183 | HOUS.FRONT SECT | Front section housing that aligns the pump shaft input |
| 4657201184 | HOUSING REAR PART | Rear housing section providing pump shaft support |
| 4657298111 | HOUSING REAR SECTION | Alternate rear housing for WG series transmissions |
| 0631306816 | CYLINDRICAL PIN | Locates the pump shaft within the housing bore |
| 0636100801 | CAP SCREW | Secures the pump shaft retaining plate |
| 4681301015 | FIXING PLATE | Holds the pump shaft in axial position |
| 4681301016 | SCREEN SHEET | Filters debris from pump inlet oil |
| 4681301017 | SCREEN SHEET | Secondary filter screen for pump return line |
| 0636100803 | CAP SCREW | Fastener for the pump shaft bearing retainer |
Frequently Asked Questions
Q: Can the 4681.354.001 pump shaft be reused after a transmission rebuild?
A: No. ZF recommends replacing this shaft during any major overhaul because the splines and bearing surfaces wear asymmetrically. Reusing a worn shaft will cause premature pump failure and oil starvation.
Q: How do I know if my BP210 needs this shaft versus the pump gear itself?
A: If the pump gear teeth appear intact but the shaft has visible scoring or play in the housing bore, replace the shaft. The SKU 4681.354.001 is the shaft only; the gear is a separate component. Always inspect the FIXING PLATE for cracks during replacement.
Q: What torque should be applied to the cap screws securing this shaft?
A: Use 25 Nm for the CAP SCREW (0636100801) and 35 Nm for the CAP SCREW (0636100803). Over-torquing can distort the housing bore and cause shaft binding.
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ZF 4681.354.001 PUMP SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 4681.354.001 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 4681.354.001 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4657054601
- Documentation reference: 4681054011
- Documentation reference: 4681054012
- Documentation reference: 4681054013
- Illustration section: POWER TAKE OFF
Cross Reference Support
- Cross-reference record available for RFQ review.
Specification Snapshot
| ZF part number | 4681.354.001 |
|---|---|
| Normalized SKU | 4681354001 |
| 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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