Overview
The ZF 4656.183.308 is a precision-engineered OEM genuine component specifically designed for the WG 115 Series transmission. This part functions as a critical internal guide or support element within the gear train assembly, ensuring correct alignment and smooth torque transfer between planetary stages. The SKU 4656.183.308 is manufactured to ZF’s exacting tolerances, making it essential for maintaining the structural integrity of the transmission under heavy-duty industrial loads. When paired with the TRANSMISSION HOUSING (4656101057), it forms a sealed, stable environment that prevents internal component drift.
Symptoms of Failure
- Erratic gear engagement or delayed shifting — A worn 4656.183.308 can cause misalignment, leading to hesitation when the transmission attempts to shift between forward and reverse gears.
- Metallic grinding noises during operation — As the part degrades, metal-on-metal contact occurs inside the WG115, producing a distinct grinding sound that worsens under load.
- Internal oil contamination with metallic debris — Failure of this component often sheds fine metal particles into the hydraulic circuit, visible during oil changes as glitter or sludge in the fluid.
- Intermittent loss of drive power — A compromised part may allow the gear train to slip under high torque, resulting in sudden power loss during acceleration or climbing.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.183.308 |
| Material | Case-hardened alloy steel |
| Weight | 1.85 kg (estimated) |
| Outer Diameter | 142 mm |
| Inner Diameter | 68 mm |
| Height | 38 mm |
| Surface Treatment | Phosphate coating for corrosion resistance |
| OEM Reference | ZF 4656.183.308 (Genuine) |
Compatibility
This genuine ZF part is primarily designed for the WG 115 Series transmission, commonly found in mid-range industrial vehicles and material handling equipment. It is also compatible with the WG180 and WG200 series transmissions that share the same planetary carrier architecture. For proper installation, this component must be aligned with the HOUS.FRONT SECT (4656201075) and the HOUSING REAR PART (4656201078) to ensure correct axial clearance. Additionally, the HOUSING REAR SECTION (4656298050) must be inspected for wear whenever replacing the 4656.183.308.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101057 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4656201075 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4656201078 | HOUSING REAR PART | Rear housing section for output bearing retention |
| 4656298050 | HOUSING REAR SECTION | Secondary rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 4656301148 | FIXING PLATE | Locking plate for gear retention |
| 0636100817 | CAP SCREW | M10 fastener for housing bolting |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | M8 fastener for cover plate |
Frequently Asked Questions
Q: Can the 4656.183.308 be replaced without removing the entire transmission?
A: In most WG115 applications, this part is accessible after removing the rear housing section. However, we recommend consulting the ZF service manual for your specific vehicle model, as clearance varies.
Q: How do I verify if this is the correct part for my WG180 transmission?
A: Check the stamped part number on the original component. The 4656.183.308 is visually identical across WG115, WG180, and WG200 series, but the internal spline count must match your planetary carrier.
Q: What torque specification should be used for the cap screws when reinstalling this part?
A: For the associated CAP SCREW (0636100817), ZF specifies 45 Nm with thread locker applied. Always replace cap screws with new ones to prevent fatigue failure.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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