Overview
The ZF 5838.300.521 PTO SHAFT HOUSING is a precision-machined OEM genuine component designed to encase and protect the power take-off (PTO) shaft assembly within select ZF heavy-duty transmissions. This housing serves as the structural anchor for the PTO output, ensuring correct alignment and load distribution during high-torque operations. As a critical interface between the transmission casing and the PTO shaft, the SKU 5838.300.521 prevents contamination ingress while maintaining proper lubrication flow to the gear train. It is commonly paired with the 5838109012: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING to form a complete driveline assembly.
Symptoms of Failure
- PTO shaft housing oil leak at seal interface: Worn housing bores or cracks allow transmission fluid to escape, often visible as drips beneath the PTO mounting area.
- Abnormal gear whine or vibration during PTO engagement: A degraded housing can misalign the PTO shaft, causing uneven tooth contact and audible noise under load.
- Difficulty engaging or disengaging PTO clutch: Housing distortion may bind the internal shift mechanism, leading to stiff operation or incomplete engagement.
- Metal debris in transmission fluid: Housing wear particles from the bearing seat area can contaminate the oil, accelerating damage to the 0750117075: TAPER ROLLER BEARING and adjacent gears.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 5838.300.521 |
| Material | High-grade cast iron (GGG-40) |
| Overall Length | 215 mm |
| Mounting Bolt Hole Diameter | 12.5 mm (4 holes) |
| Weight | 3.85 kg |
| Bearing Seat Inner Diameter | 72.0 mm |
| Surface Treatment | Zinc-phosphate coating |
| Compatible Seal Type | Dual-lip radial shaft seal |
Compatibility
This PTO shaft housing is engineered for the ZF WG100, WG130, and WG131 transmission series. It also fits select variants of the WG180 and WG200 models when used with the appropriate PTO adapter kit. For optimal driveline integrity, always replace the housing alongside the 2093209023: DIFFERENTIAL and inspect the mating 5838300626: DIFFERENTIAL HOUSING for wear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial shaft loads |
| 2093209023 | DIFFERENTIAL | Secondary torque-splitting unit for heavy loads |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures shift fork to actuator rod |
| 5838300811 | THRUST WASHER | Controls axial clearance in gear stack |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at 90-degree angle |
| 5838300633 | AXLE | Rotates wheel hub assembly |
| 5838300753 | THRUST WASHER | Reduces friction in planetary gear set |
| 5838300818 | THRUST WASHER | Prevents axial movement of output shaft |
Frequently Asked Questions
Q: Can the 5838.300.521 housing be reused if it shows minor surface corrosion?
A: No. Even superficial corrosion can compromise the seal bore tolerance and lead to premature oil leakage. ZF recommends replacement with a genuine OEM housing to maintain proper PTO alignment.
Q: Does this housing require a specific torque sequence during installation?
A: Yes. Always tighten the four mounting bolts in a cross-pattern to 85 Nm using a calibrated torque wrench. Incorrect torque can distort the housing and cause binding of the PTO shaft.
Q: Will the 5838.300.521 fit a ZF WG180 transmission without modification?
A: It is directly compatible with WG180 models that use a standard PTO adapter. For WG200 units, verify that the PTO mounting flange matches the 12.5 mm bolt pattern before installation.
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ZF 5838.300.521 PTO SHAFT HOUSING – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 5838.300.521 PTO SHAFT HOUSING 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 5838.300.521 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
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 | 5838.300.521 |
|---|---|
| Normalized SKU | 5838300521 |
| Part name | PTO SHAFT HOUSING |
| 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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