ZF 4699.300.146 PLANET CARRIER | OEM Genuine Part

Overview

The ZF 4699.300.146 PLANET CARRIER is a critical rotating assembly within the planetary gear set of heavy-duty ZF transmissions. This OEM genuine part functions as the central hub that supports the planetary gears, transferring torque from the sun gear to the ring gear while managing immense radial and axial loads. Located in the main drive section of the transmission, the planet carrier ensures smooth power distribution across the gear train. The SKU 4699.300.146 is precision-machined to maintain exact gear mesh alignment, directly influencing shift quality and overall drivetrain efficiency in construction machinery.

Symptoms of Failure

• Transmission gear slipping under load: A worn planet carrier allows excessive gear play, causing intermittent power loss during excavation or grading operations.
• Metallic grinding noise from the transmission housing: Damaged carrier bearing journals or cracked carrier arms produce a distinct low-frequency grinding sound, especially during acceleration.
• Oil contamination with metallic debris: As the carrier wears, fine steel particles enter the lubrication system, often detected during routine oil analysis.
• Erratic shifting or delayed engagement: Misalignment from a fatigued planet carrier disrupts hydraulic clutch timing, leading to harsh or delayed gear changes.

Technical Specifications

Compatibility

This planet carrier is engineered for use in ZF WG series transmissions commonly found in wheel loaders, graders, and compactors. It is a direct fit for the WG180 and WG200 transmission models, as well as certain variants of the WG150 series. The 4699.300.146 carrier interfaces directly with the 4699101053 HOUSING and the 4699301126 HOUSING to form the complete planetary assembly. A proper seal is maintained using the 0634801038 SEALING RING, while the assembly is secured with the 0501319149 SCREW PLUG.

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