Overview
The ZF 0501.324.556 END YOKE is a critical driveline component engineered specifically for the WG 190 Series transmission. This OEM genuine part serves as the mechanical interface between the transmission output shaft and the propeller shaft, ensuring precise torque transfer and rotational alignment. The SKU 0501.324.556 is designed to absorb torsional vibrations while maintaining a secure connection under heavy-duty operating conditions. When installed correctly, this end yoke works in concert with the TRANSMISSION HOUSING to maintain driveline geometry and prevent premature wear on adjacent components.
Symptoms of Failure
- Vibration during acceleration: A worn 0501.324.556 end yoke causes noticeable driveline shudder, particularly between 30-50 mph, as spline wear creates rotational imbalance.
- Oil seepage at the output flange: Deterioration of the yoke seal surface leads to transmission fluid leaks, often mistaken for a rear main seal failure.
- Clunking noise on gear engagement: Excessive backlash from a fatigued yoke produces audible metallic impacts when shifting from Park to Drive or Reverse.
- Premature u-joint failure: A distorted end yoke forces universal joints to operate at incorrect angles, accelerating wear and requiring frequent replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.324.556 |
| Material | Forged alloy steel, heat-treated |
| Weight | 2.8 kg (6.2 lbs) |
| Spline Count | 14-tooth, involute spline |
| Flange Diameter | 120 mm |
| Overall Length | 165 mm |
| OEM Reference | ZF 0501.324.556 |
| Hardware Torque Spec | 180 Nm (133 ft-lbs) |
Compatibility
This genuine ZF end yoke is primarily designed for the WG 190 Series transmission, but it also fits select variants in the WG180 and WG200 families. The 0501.324.556 is compatible with transmissions that share the same output shaft spline geometry and flange bolt pattern. For proper installation, this yoke must be paired with the HOUS.FRONT SECT and the HOUSING REAR PART to ensure correct axial positioning. Additionally, the HOUSING REAR SECTION must be inspected for wear when replacing this yoke, as misalignment can cause rapid failure.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing pump and converter |
| 4657201168 | HOUSING REAR PART | Rear housing supporting output shaft |
| 4657298101 | HOUSING REAR SECTION | Extended rear housing for yoke clearance |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | M12 fastener for yoke retention |
| 4656301148 | FIXING PLATE | Locking plate for yoke nut |
| 4657301032 | SCREEN SHEET | Filter screen for oil return circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for lubrication |
| 0636100803 | CAP SCREW | M10 fastener for housing sections |
Frequently Asked Questions
Q: Can the 0501.324.556 end yoke be reused after removal?
A: ZF recommends replacing this yoke whenever it is removed, as the interference fit and spline engagement degrade during initial installation. Reuse risks driveline vibration and accelerated wear on the transmission output shaft.
Q: What torque specification should be used for the yoke nut?
A: The retaining nut for the 0501.324.556 must be torqued to 180 Nm (133 ft-lbs) using a new FIXING PLATE to prevent loosening. Always consult the WG190 service manual for the exact procedure.
Q: Does this yoke fit the WG200 transmission?
A: The 0501.324.556 is dimensionally compatible with WG200 models that use a 14-spline output shaft and 120mm flange. Verify your transmission’s rear housing part number against the HOUSING REAR PART to confirm fitment.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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