Overview
The ZF 5838.300.136 Axle Bevel Gear is a precision-engineered component designed for the final drive assembly of ZF WG100, WG130, and WG131 transmissions. This OEM genuine part transfers rotational power from the driveshaft to the differential, changing the axis of rotation by 90 degrees to drive the axle shafts. As a critical element in the drivetrain, the 5838.300.136 ensures smooth torque delivery and minimal power loss. It works in concert with the 5838022003: REAR AXLE and the 5838109001: DIFFERENTIAL to distribute engine power to the wheels. The gear is machined from case-hardened alloy steel to withstand high stress and continuous operation in heavy-duty industrial applications.
Symptoms of Failure
- Whining or howling noise from the axle: A worn 5838.300.136 produces a distinct high-pitched whine during acceleration or deceleration, often mistaken for tire noise. This indicates uneven tooth wear or pitting on the bevel gear surface.
- Vibration in the driveline: Excessive backlash or chipped gear teeth cause noticeable vibration through the chassis, especially at highway speeds. This symptom worsens when the 0750117075: TAPER ROLLER BEARING supporting the gear also degrades.
- Oil leaks near the pinion seal: A failing bevel gear can create internal pressure or misalignment, forcing lubricant past the seal. Look for drips around the axle input flange.
- Clunking when shifting between drive and reverse: Excessive gear lash from a worn 5838.300.136 produces a metallic clunk as the drivetrain load reverses direction.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 5838.300.136 |
| Gear Type | Spiral Bevel Gear (Hypoid) |
| Material | Case-Hardened Alloy Steel (20MnCr5) |
| Tooth Count | 12 (Pinion) / 41 (Ring Gear) |
| Pitch Diameter | 180 mm (7.09 in) |
| Weight | 3.8 kg (8.4 lbs) |
| Surface Hardness | 58-62 HRC |
| OEM Reference | ZF 5838.300.136 |
Compatibility
This bevel gear is specifically engineered for ZF WG-series transmissions. It is a direct fit for the following models:
- ZF WG100
- ZF WG130
- ZF WG131
- ZF WG180 (with adapter housing)
- ZF WG200 (with modified shim pack)
Always verify the gear ratio and backlash specifications when replacing the 5838.300.136. The 5838300128: DIFFERENTIAL HOUSING must be inspected for cracks or wear during installation, as housing distortion accelerates gear failure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | REAR AXLE | Houses the differential and axle shafts |
| 5838109001 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports the bevel gear pinion shaft |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses the differential gears |
| 0631329086 | SPRING PIN | Secures gear alignment during assembly |
| 5838300129 | THRUST WASHER | Controls axial play in the differential |
| 5838300130 | THRUST WASHER | Controls axial play (alternate thickness) |
| 5838300131 | AXLE BEVEL GEAR | Matching gear for opposite side (left/right) |
| 5838300132 | COMPENS. STUB AXLE | Compensates for axle length variations |
| 5838300133 | COMPENS. STUB AXLE | Compensates for axle length variations (alternate) |
ZF 5838.300.136 AXLE BEVEL GEAR – Gear RFQ Support
Use ZF 5838.300.136 AXLE BEVEL GEAR as the reference when requesting gear support. Photos, visible markings, and transmission context help reduce sourcing uncertainty.
Part-Number Summary
Use ZF number 5838.300.136 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
This gear supports gear train repair, rebuild, and part-number matching work. Send machine, transmission, or removed-part evidence with your RFQ for faster review.
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 | 5838.300.136 |
|---|---|
| Normalized SKU | 5838300136 |
| Part name | AXLE BEVEL GEAR |
| Product category | gear |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
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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