Overview
The ZF 5838.300.044 Power Take-Off (PTO) Shaft Stub is a critical driveline component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part serves as the primary interface between the transmission’s internal gear train and the external PTO unit, transferring rotational power to auxiliary hydraulic pumps or driven equipment. Machined from high-tensile alloy steel, the shaft stub is splined to ensure precise engagement and minimal backlash. As a direct replacement for SKU 5838.300.044, it restores full power take-off functionality and eliminates driveline vibration caused by worn splines or bearing surfaces.
Symptoms of Failure
- Audible clicking or grinding during PTO engagement: Worn splines on the shaft stub cause intermittent gear clash, especially under load. This symptom often escalates if the 0750117075 TAPER ROLLER BEARING supporting the shaft loses preload.
- Hydraulic pump output fluctuation: A degraded shaft stub cannot maintain consistent rotational speed, leading to erratic hydraulic pressure in auxiliary systems.
- Oil seepage at the PTO housing seal: Excessive radial play from a worn stub damages the shaft seal, allowing transmission fluid to escape. This is frequently accompanied by debris contamination from a failing 5838300626 DIFFERENTIAL HOUSING.
- Vibration in neutral or low RPM: Imbalance from a bent or cracked shaft stub transmits resonance through the transmission case, often misdiagnosed as a failing 5838109012 DIFFERENTIAL.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 5838.300.044 |
| Overall Length | 185 mm |
| Spline Major Diameter | 32 mm (14-tooth, involute) |
| Material | 20MnCr5 case-hardened steel |
| Hardness | 58-62 HRC (case depth 0.8 mm) |
| Weight | 1.42 kg |
| OEM Reference | ZF 5838.300.044 |
| Torque Capacity | 450 Nm (peak) |
Compatibility
This PTO shaft stub is specifically designed for the ZF WG-series powershift transmissions. Verified direct-fit applications include the WG100, WG130, and WG131 models. It also retrofits into the WG180 and WG200 series when used with the correct spacer kit. The stub interfaces directly with the 2093209023 DIFFERENTIAL assembly in these transmissions, ensuring concentric alignment of the PTO drive gear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles; mates to PTO shaft stub |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial loads on the shaft stub |
| 2093209023 | DIFFERENTIAL | Secondary differential for multi-axle PTO configurations |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears; aligns shaft stub bore |
| 0631329088 | SPRING PIN | Secures shaft stub to PTO drive gear |
| 5838300811 | THRUST WASHER | Controls axial clearance of shaft stub assembly |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from shaft stub to axle shaft |
| 5838300633 | AXLE | Drives wheel hubs; splined to shaft stub output |
| 5838300753 | THRUST WASHER | Reduces friction between shaft stub and housing |
| 5838300818 | THRUST WASHER | Secondary axial load distribution for heavy-duty cycles |
Frequently Asked Questions
Q: Can the 5838.300.044 shaft stub be used in a ZF WG180 transmission without modifications?
A: Yes, but only if you install the correct spacer kit (ZF part 5838.300.045) to compensate for the longer housing depth in the WG180 series. Without it, the stub will not fully engage the PTO clutch splines.
Q: How do I know if the shaft stub is worn beyond reuse?
A: Measure the spline tooth thickness at three points. If any measurement is below 4.2 mm (new is 4.8 mm), or if you detect more than 0.15 mm of radial play when mated to the 5838109012 DIFFERENTIAL, replacement is mandatory.
Q: What torque should I apply to the retaining nut on this shaft stub?
A: Tighten to 180 Nm using a thread-locking compound (Loctite 243 or equivalent). Always replace the 0631329088 SPRING PIN during reassembly to prevent nut back-off.
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Phone: +86 158 2286 3467 |
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ZF 5838.300.044 POWER TAKE-OFF SHAFT STUB – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 5838.300.044 POWER TAKE-OFF SHAFT STUB 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 5838.300.044 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: P.T.O. SHAFT
- Illustration section: KIT P.T.O. SHAFT
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 | 5838.300.044 |
|---|---|
| Normalized SKU | 5838300044 |
| Part name | POWER TAKE-OFF SHAFT STUB |
| 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.
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