Overview
The ZF 0731.201.559 PIN is a precision-machined locating and pivot component engineered for the shift mechanism and internal linkage assemblies of ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. This OEM genuine part (SKU: 0731.201.559) serves as a critical retention and alignment pin within the spring and fastener category, securing shift rails and forks to ensure precise gear engagement. It works in concert with the 2094104412 MAIN SHAFT and the 2094304054 MAIN SHAFT to maintain axial stability during high-torque operations. Without this pin, the shift system cannot maintain proper geometry, leading to driveline inefficiency.
Symptoms of Failure
- Erratic gear engagement or “gear slipping” under load: When the 0731.201.559 pin wears or shears, the shift fork loses its pivot point, causing incomplete engagement of the main shaft gears.
- Excessive lateral play in the shift lever: A worn pin allows the 2094206001 GEARSHIFT SHAFT to move beyond its designed tolerance, resulting in a sloppy shifter feel.
- Metallic rattling noise from the transmission housing: Loose pin movement creates a distinct rattle at idle, often misdiagnosed as a bearing issue.
- Oil contamination from internal debris: A fractured pin releases hardened steel particles into the oil, accelerating wear on the 2094106010 SHIFT SYSTEM components.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 0731.201.559 |
| Material | Case-hardened alloy steel (DIN 1.7131 equivalent) |
| Overall Length | 42.0 mm |
| Outer Diameter | 10.0 mm |
| Weight | 26 grams |
| Surface Finish | Phosphate coated (anti-corrosion) |
| OEM Reference | ZF 0731.201.559 |
| Category | Springs & Fasteners |
Compatibility
This pin is specifically designed for the ZF WG100, WG130, and WG131 transmission series. It is also compatible with select WG180 and WG200 variants that share the same shift rail architecture. Always verify fitment by cross-referencing your existing pin dimensions. The 0731.201.559 pin directly interfaces with the 2094304054 MAIN SHAFT assembly and the 2094206001 GEARSHIFT SHAFT housing. For complete shift system restoration, pairing this pin with a new 2094106010 SHIFT SYSTEM is recommended.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Primary torque transfer shaft |
| 2094304054 | MAIN SHAFT | Secondary shaft for gear synchronization |
| 2094106010 | SHIFT SYSTEM | Complete shift rail and fork assembly |
| 2094206001 | GEARSHIFT SHAFT | External shift lever input shaft |
| 2094306053 | GEARSHIFT SHAFT | Alternate shift shaft variant |
| 0630513070 | SNAP RING | Retains pin in bore |
| 2094306019 | WASHER | Thrust washer for pin end |
| 0732040444 | COMPRESSION SPRING | Provides preload to shift detent |
| 0732040728 | COMPRESSION SPRING | Heavy-duty detent spring |
| 2093206001 | BUSH | Guide bushing for shift shaft |
Frequently Asked Questions
Q: Can I reuse the old snap ring when installing the 0731.201.559 pin?
No. Always replace the 0630513070 SNAP RING simultaneously, as reused snap rings lose retention force and can allow the pin to walk out of position.
Q: How do I confirm this pin fits my WG130 transmission?
Measure the existing pin length and diameter. The 0731.201.559 is 42mm long with a 10mm diameter. If your original pin matches these dimensions, it is a direct replacement. Cross-check with your shift system part number, such as the 2094106010 SHIFT SYSTEM.
Q: What causes this pin to fail prematurely?
Most failures result from a worn 2093206001 BUSH or a collapsed 0732040444 COMPRESSION SPRING, which allows excessive lateral movement and shears the pin head.
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Phone: +86 158 2286 3467 |
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