Overview
The ZF 2093.129.006 BRAKE SHAFT is a critical actuation component within the WG100, WG130, and WG131 transmission assemblies. This OEM genuine part directly interfaces with the brake piston and clutch pack to modulate hydraulic pressure, ensuring smooth gear engagement and reliable braking force during deceleration. The SKU 2093.129.006 is precision-machined to exact ZF tolerances, acting as the mechanical link between the shift valve body and the rotating clutch drum. When installed correctly, this shaft prevents torque bleed and maintains consistent line pressure across the transmission’s operating range.
Symptoms of Failure
- Delayed engagement or gear slipping under load – A worn brake shaft can cause insufficient clamping force on the clutch pack, leading to hesitation when shifting from neutral to drive or reverse.
- Hydraulic fluid seepage near the brake housing – Degraded shaft seals or surface scoring allow ATF to bypass, resulting in visible drips and low fluid levels.
- Erratic shift timing and harsh engagement – As the shaft loses its precise fit, valve body signals become inconsistent, producing jarring shifts during acceleration or coasting.
- Unusual grinding or whining noise from the transmission center section – Metal-on-metal contact from a worn shaft surface generates audible distress, particularly in the WG100 series.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.129.006 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 142.5 mm |
| Shaft Diameter | 28.0 mm (bearing journal) |
| Spline Count | 22 involute splines |
| Weight | 0.85 kg |
| OEM Reference | ZF 2093.129.006 |
| Surface Finish | Ground and phosphate-coated |
Compatibility
This brake shaft is engineered for ZF’s WG100, WG130, and WG131 transmission models. It is also compatible with select WG180 and WG200 variants that share the same brake piston bore diameter and spline interface. Always verify the shaft’s shoulder height against your existing unit before installation. The 2093.129.006 is not interchangeable with earlier WG series transmissions without modifying the clutch hub assembly.
Related Components
During a brake shaft replacement, inspect these companion parts that share the same hydraulic circuit. The 2093109024 DIFFERENTIAL distributes torque to the output shafts, while the 0750117075 TAPER ROLLER BEARING supports the shaft’s axial load. The 2093209095 DIFFERENTIAL and 2093309071 DIFF.HOUSING complete the gearset assembly. Below is a full list of components that often require simultaneous replacement.
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes engine torque to drive axles |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial shaft loads |
| 2093209095 | DIFFERENTIAL | Secondary torque split unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures shaft alignment within bore |
| 0730300820 | THRUST WASHER | Controls axial end-play of shaft |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Reduces friction on differential gears |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
Frequently Asked Questions
Q: Can I install the 2093.129.006 brake shaft without removing the transmission?
A: In most WG100/WG130 applications, the brake shaft can be accessed by dropping the valve body and removing the brake piston cover. However, full transmission removal is recommended if the shaft shows signs of spline wear or if the differential housing must be separated.
Q: What torque specification should I use for the retaining bolt on this shaft?
A: ZF specifies 45 Nm ± 3 Nm for the M10 retaining bolt. Always use a new lock washer and apply thread locker (Loctite 243) to prevent loosening under vibration.
Q: How do I differentiate between a failing brake shaft and a worn clutch pack?
A: Perform a stall test: if the engine RPM rises more than 300 RPM above spec in gear, the clutch pack is likely worn. If the transmission slips only during braking or coasting, the brake shaft is the primary suspect.
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ZF 2093.129.006 BRAKE SHAFT – Shaft RFQ Support
PartsZF helps B2B buyers source ZF 2093.129.006 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 2093.129.006 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: TRA 16
- Illustration section: TRA 20
- 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 | 2093.129.006 |
|---|---|
| Normalized SKU | 2093129006 |
| 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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