ZF 4656.056.307 for WG160 | OEM Genuine Part

Overview

The ZF 4656.056.307 is a critical OEM genuine component engineered specifically for the WG 160 Series transmission. This part functions as a precision-machined guide or bearing support element within the planetary gear assembly, ensuring correct axial alignment and load distribution during high-torque operations. The SKU 4656.056.307 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in commercial vehicle and heavy machinery drivelines. When installed alongside the 4656201085: HOUS.FRONT SECT, it maintains the structural integrity of the front housing section, preventing misalignment that can lead to cascading gear damage.

Symptoms of Failure

• Transmission gear slipping under load: When the 4656.056.307 wears, the planetary gears lose precise spacing, causing intermittent slipping during acceleration or hill climbs.
• Metallic grinding noise from the bell housing: A worn part allows metal-on-metal contact, producing a distinct grinding sound that intensifies with RPM changes.
• Oil contamination with metallic debris: Degradation of this component sheds fine metal particles into the transmission fluid, visible during routine oil changes as a “glitter” effect.
• Vibration during gear engagement: Excessive play in the assembly creates low-frequency vibrations felt through the chassis when shifting between forward and reverse.

Technical Specifications

Compatibility

This OEM genuine part is designed for the ZF WG 160 Series transmission. Based on its dimensional profile and application, the 4656.056.307 is also compatible with the WG 180 and WG 200 models that share the same planetary carrier architecture. It is frequently used in ZF 6WG160, 6WG180, and 6WG200 transmissions found in municipal buses, refuse trucks, and construction loaders. For proper assembly, this component must be paired with the 0631306816: CYLINDRICAL PIN for precise dowel alignment, and secured using the 4656301148: FIXING PLATE to prevent axial movement. Final torque specifications require the 0636100817: CAP SCREW to be tightened to 45 Nm.

Frequently Asked Questions

Q: How do I know if the 4656.056.307 needs replacement?
A: Inspect the part for visible wear on the bearing surfaces or scoring marks. If you observe any of the failure symptoms listed above—especially metallic debris in the oil—replace this component immediately to avoid damage to the planetary gears.

Q: Can I reuse the old fixing plate or cap screws with this new part?
A: No. ZF recommends always replacing the FIXING PLATE and CAP SCREW simultaneously, as these fasteners experience torque-to-yield deformation during initial installation.

Q: Is this part interchangeable with the WG 200 transmission?
A: Yes. The 4656.056.307 is physically identical to the part used in WG 200 units. Always verify your transmission serial number against ZF’s parts catalog for absolute confirmation.

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