Overview
The ZF 4646.302.141 EJE DE ENTRADA (Input Shaft) is a critical OEM component engineered for the WG310 powershift transmission. This precision-machined shaft transmits engine torque directly from the torque converter to the planetary gear sets, serving as the primary rotational interface within the drivetrain. As an original equipment piece, SKU 4646.302.141 ensures exact fitment and load-bearing capacity for demanding construction machinery applications. When installing this shaft, technicians typically secure it using the 0636115293 螺栓 and the 0736300232 螺栓 to guarantee proper clamping force. The assembly also requires the 4475280208 SCREW PLUG for sealing hydraulic passages and the 0634316523 O-RING to prevent fluid bypass at the shaft housing interface.
Symptoms of Failure
- Transmission gear slipping under load: A worn input shaft spline or bearing journal causes intermittent power loss, particularly during heavy excavation or grading operations.
- Low hydraulic pressure warnings: Cracks or scoring on the shaft surface disrupt internal oil flow, triggering pressure drops in the main regulator circuit.
- Metallic debris in transmission fluid: Flaking or pitting of the shaft material generates ferrous particles visible during routine oil sampling.
- Vibration at the torque converter housing: Bearing seat wear on the 4646.302.141 shaft produces rhythmic shaking that intensifies with engine RPM.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 4646.302.141 |
| Overall Length | 385 mm (estimated) |
| Spline Diameter | 42 mm (input end) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.8 kg (10.6 lbs) |
| OEM Reference | ZF 4646.302.141 |
| Hardness | 58-62 HRC (surface) |
Compatibility
This input shaft is specifically designed for the ZF WG310 transmission series. Based on its spline geometry and bearing configuration, the 4646.302.141 also fits select variants of the WG180, WG200, and WG250 models used in wheel loaders, graders, and compactors. Always verify the transmission serial number before ordering. The shaft interfaces directly with the 4656306171 VALVE BLOCK and the 4656306190 CONNECTING HOUSING in the WG310 assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures input shaft bearing retainer |
| 0736300232 | 螺栓 | Fastens shaft housing to transmission case |
| 4475280208 | SCREW PLUG | Seals oil gallery in shaft bore |
| 0634316523 | O-RING | Prevents fluid leakage at shaft seal |
| 4656306171 | VALVE BLOCK | Controls clutch pressure modulation |
| 4656306190 | CONNECTING HOUSING | Aligns shaft with torque converter |
| 0501213997 | PRESSURE REGULATOR | Maintains system hydraulic pressure |
| 0736300094 | TORX SCREW | Mounts valve block to housing |
| 4475280047 | SCREW-IN SLEEVE | Provides oil feed port for shaft |
| 0634306010 | O形圈 | Seals screw-in sleeve connection |
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