Overview
The ZF 2093.103.007 COUNTERSHAFT is a critical rotating component within the WG100, WG130, and WG131 transmission assemblies. It functions as the primary torque transfer element between the input shaft and the output gear train, ensuring smooth power distribution under heavy load conditions. This OEM genuine part (SKU: 2093.103.007) is precision-machined to maintain exact gear mesh alignment, directly influencing the durability of the entire drivetrain. When installed, it works in concert with the 5838109012: DIFFERENTIAL to manage rotational forces, and its proper seating is essential for the longevity of the 0750117075: TAPER ROLLER BEARING that supports it.
Symptoms of Failure
- Whining or grinding noise during gear engagement: A worn countershaft often produces a distinct metallic whine, especially when accelerating or decelerating, indicating bearing surface degradation or gear tooth wear.
- Intermittent gear slipping under load: As the countershaft loses its precise alignment, the transmission may momentarily lose torque transfer, causing the vehicle to surge or hesitate during uphill climbs or heavy hauling.
- Metal particles in transmission fluid: Flaking or spalling on the countershaft surface contaminates the oil with metallic debris, which can be detected during routine fluid changes and signals imminent failure.
- Vibration through the gearshift lever: Excessive play in the countershaft bearings transmits noticeable vibration into the cab, often worsening at specific RPM ranges.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.103.007 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 385 mm (estimated) |
| Journal Diameter | 45 mm (estimated) |
| Weight | 4.2 kg (estimated) |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
| OEM Reference | ZF 2093.103.007 |
Compatibility
This countershaft is engineered for ZF’s WG-series mechanical transmissions, specifically the WG100, WG130, and WG131 models. These units are commonly found in medium-duty trucks, agricultural tractors, and construction equipment. While the WG180 and WG200 models use a different shaft geometry, the 2093.103.007 is a direct fit for the aforementioned three models. For complete assembly, it integrates with the 2093209023: DIFFERENTIAL and is housed within the 5838300626: DIFFERENTIAL HOUSING to ensure concentric rotation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports countershaft radial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque split unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears |
| 0631329088 | SPRING PIN | Secures gear alignment on shaft |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Changes torque direction |
| 5838300633 | AXLE | Transmits rotational power |
| 5838300753 | THRUST WASHER | Reduces friction on gear faces |
| 5838300818 | THRUST WASHER | Secondary axial load bearing |
Frequently Asked Questions
Q: Can I replace the countershaft without removing the entire transmission?
A: No. The 2093.103.007 is an internal component requiring full transmission disassembly. We recommend replacing the 0750117075: TAPER ROLLER BEARING simultaneously due to shared wear patterns.
Q: How do I verify this part fits my WG130 transmission?
A: Check the transmission serial number plate. The 2093.103.007 is standard for WG100, WG130, and WG131 units built after 2005. For earlier models, consult the 5838300626: DIFFERENTIAL HOUSING part number to confirm compatibility.
Q: What is the typical lifespan of this countershaft under normal operating conditions?
A: With proper lubrication and load management, the OEM 2093.103.007 typically lasts 8,000–12,000 operating hours. Early replacement is advised if metal particles appear in the oil.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
