Overview
The ZF 2093.329.004 BRAKE SHAFT is a critical component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the primary interface between the braking mechanism and the planetary gearset, converting hydraulic or mechanical input into precise stopping force within the transmission housing. The SKU 2093.329.004 is designed to withstand high torsional loads and thermal cycling, ensuring reliable engagement and disengagement during heavy-duty operations. It sits directly within the brake pack assembly, where it transmits torque to the clutch discs and steel plates, making it indispensable for smooth power interruption and vehicle control.
Symptoms of Failure
- Intermittent gear slipping under load: When the brake shaft wears, the transmission may fail to hold gear engagement, causing unexpected slipping during acceleration or climbing.
- Oil leaks around the brake housing: A worn shaft seal or surface scoring can lead to ATF fluid escaping, visible as drips near the bell housing or transmission pan.
- Delayed or harsh braking response: Operators may notice a lag between pedal input and actual deceleration, or a sudden jolt when the brakes engage, indicating shaft wear or spline damage.
- Unusual grinding or whining noise: Metal-on-metal contact from a degraded shaft produces audible noise, especially during low-speed maneuvers or when the transmission is cold.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2093.329.004 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 185 mm |
| Shaft Diameter | 32 mm (bearing journal) |
| Spline Count | 24 involute splines |
| Weight | 1.45 kg |
| OEM Reference | ZF 2093.329.004 |
| Surface Hardness | 58-62 HRC |
Compatibility
This brake shaft is specifically designed for ZF WG100, WG130, and WG131 transmissions, commonly found in medium-duty trucks, buses, and off-highway equipment. It is also compatible with select variants of the WG180 and WG200 series when used with the correct brake pack configuration. Always verify your transmission model number before installation, as spline profiles and shaft lengths vary between series. The 2093.329.004 is not interchangeable with earlier WG80 or WG90 series shafts without adapter modifications.
Related Components
This brake shaft works in concert with several adjacent parts in the ZF differential and brake assembly. For optimal performance, inspect and replace the following components simultaneously:
- 2093109024: DIFFERENTIAL – Distributes torque to the axle shafts.
- 0750117075: TAPER ROLLER BEARING – Supports the brake shaft’s axial and radial loads.
- 2093209095: DIFFERENTIAL – Second differential unit for multi-axle configurations.
- 2093309071: DIFF.HOUSING – Encloses the differential and brake shaft assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports brake shaft loads |
| 2093209095 | DIFFERENTIAL | Secondary torque distribution |
| 2093309071 | DIFF.HOUSING | Encloses differential assembly |
| 0631100223 | SPRING PIN | Secures shaft alignment |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheels |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Manages end-play clearance |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear for torque split |
Frequently Asked Questions
Q: Can the 2093.329.004 brake shaft be used in a ZF WG180 transmission?
A: Yes, it is compatible with WG180 models that share the same brake pack design, but always cross-reference your transmission serial number to confirm spline engagement and shaft length.
Q: What torque specification should I use when installing this brake shaft?
A: The retaining nut should be torqued to 180 Nm (133 ft-lbs) for most WG100/WG130 applications. Consult your service manual for exact values, as over-torquing can damage the shaft or bearing.
Q: How often should the brake shaft be replaced during transmission rebuilds?
A: ZF recommends replacing the brake shaft every 300,000 miles or during any major overhaul, especially if you observe scoring, pitting, or spline wear. Always pair it with a new 0750117075 TAPER ROLLER BEARING to ensure proper alignment.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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ZF 2093.329.004 BRAKE SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 2093.329.004 BRAKE 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 2093.329.004 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: BRAKE 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 | 2093.329.004 |
|---|---|
| Normalized SKU | 2093329004 |
| Part name | BRAKE 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.
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