Overview
The ZF 2094.306.026 GEARSHIFT SHAFT is a critical mechanical component within the WG100, WG130, and WG131 transmission assemblies. This genuine OEM part acts as the primary interface between the shift lever mechanism and the internal selector forks, translating driver input into precise gear engagement. Positioned within the upper valve body area, the shaft rotates and slides to direct hydraulic flow for clutch pack activation. The SKU 2094.306.026 is engineered to exact ZF tolerances, ensuring smooth, positive shifting under heavy-duty industrial loads. When replacing this shaft, it is essential to inspect the surrounding 2094101012: TRANSMISSION HOUSING for wear, as misalignment here accelerates shaft degradation.
Symptoms of Failure
- Hard shifting or gear engagement delay: A worn 2094.306.026 shaft develops burrs or pitting on its splines, causing the shift fork to stick. This results in a noticeable lag when moving from Neutral to Drive or Reverse.
- Transmission oil leaks at the shift tower: The shaft’s sealing surface deteriorates over time, allowing ATF to weep past the 0750111371: SHAFT SEAL. Look for fluid accumulation around the shift lever base.
- Intermittent gear slippage under load: When the shaft’s detent grooves wear unevenly, the transmission may pop out of gear during acceleration, particularly in lower ratios.
- Excessive play in the shift lever: Radial wear on the shaft bushing creates a loose, imprecise feel at the selector, often accompanied by a metallic rattle.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (OEM) | 2094.306.026 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 185 mm ± 0.5 mm |
| Shaft Diameter (sealing area) | 22 mm h6 tolerance |
| Spline Count | 16 involute splines |
| Weight | 0.42 kg (0.93 lbs) |
| Surface Finish | Black oxide coating for corrosion resistance |
| OEM Reference | ZF 2094.306.026 (genuine) |
Compatibility
This 2094.306.026 gearshift shaft is specifically designed for the ZF WG series of powershift transmissions. It is a direct fit for the following models:
- ZF WG100 (all variants)
- ZF WG130 (including WG131)
- ZF WG180 (with adapter bushing check)
- ZF WG200 (early production runs)
During installation, always verify the condition of the 2094301036: HOUSING and the 2094298057: HOUSING for cracks or distortion. The 2094301071: COVER must also be inspected for gasket surface flatness to prevent post-repair leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101012 | TRANSMISSION HOUSING | Main structural casing that supports the gearshift shaft bore |
| 2094301036 | HOUSING | Intermediate housing that aligns shift rails |
| 2094298057 | HOUSING | Rear housing containing shift detent mechanism |
| 2094301071 | COVER | Top cover sealing the shift tower area |
| 0750111371 | SHAFT SEAL | Prevents oil leakage along the shaft |
| 0634303085 | O-RING | Seals the shift shaft bore in the housing |
| 2094301030 | GASKET | Paper gasket for shift cover interface |
| 0631306670 | CYLINDRICAL PIN | Locates the shift fork on the shaft |
| 0636011356 | HEXAGON SCREW | Fastens the shift lever to the shaft |
| 4475280060 | SCREW PLUG | Seals the detent spring access port |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
