Overview
The ZF 2074.311.051 PIN is a precision-engineered locating and alignment component specifically designed for the WG100, WG130, and WG131 transmission series. This OEM genuine part, identified by SKU 2074.311.051, serves as a critical dowel or guide pin within the transmission housing assembly. It ensures exact positioning between mating components, preventing lateral movement during high-torque operation. By maintaining strict alignment, this pin directly supports the structural integrity of the TRANSMISSION HOUSING and adjacent HOUSING sections, reducing stress on fasteners and gaskets.
Symptoms of Failure
When the ZF 2074.311.051 pin wears or shears, operators may notice these specific failure indicators:
- Transmission housing misalignment: Difficulty re-seating the HOUSING during rebuilds, often accompanied by uneven bolt torque.
- Oil seepage at mating flanges: A worn pin allows micro-movement, breaking the seal between the COVER and main case, leading to slow leaks.
- Abnormal gear engagement noise: Misaligned housings cause gear train binding, producing a rhythmic clunking under load.
- Premature bearing wear: Without precise pin location, bearings experience uneven loading, accelerating failure.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2074.311.051 |
| Material | Case-hardened alloy steel (DIN 1.7131) |
| Diameter | 12 mm (nominal) |
| Length | 45 mm |
| Surface Hardness | 58-62 HRC |
| Weight | 0.04 kg |
| OEM Reference | ZF 2074.311.051 |
| Fit Tolerance | H7/m6 (press fit) |
Compatibility
This pin is engineered for the ZF WG-series powershift transmissions. Verified compatible models include:
- ZF WG100 (all variants)
- ZF WG130 (including WG130-1)
- ZF WG131 (standard and heavy-duty)
- ZF WG180 (limited application; verify housing type)
- ZF WG200 (when used with specific HOUSING castings)
Always cross-reference your transmission serial number to confirm fitment, as housing revisions may affect pin length requirements.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101012 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 2094301036 | HOUSING | Intermediate housing section |
| 2094298057 | HOUSING | Rear housing adapter |
| 2094301071 | COVER | Access cover for valve body |
| 0750111371 | SHAFT SEAL | Prevents oil leakage at rotating shafts |
| 0634303085 | O-RING | Static seal for hydraulic circuits |
| 2094301030 | GASKET | Flange seal between housings |
| 0631306670 | CYLINDRICAL PIN | Secondary alignment pin |
| 0636011356 | HEXAGON SCREW | Fastener for housing assembly |
| 4475280060 | SCREW PLUG | Seals oil passages |
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