Overview
The ZF 4143.315.026 PLANET CARRIER is a critical rotating assembly within the HL 100 and HL 270 series powershift transmissions. This OEM genuine part serves as the central hub that supports the planetary gears, distributing torque evenly across the gear set during high-load operations. Located directly within the main gear train, the planet carrier ensures smooth power flow from the torque converter to the output shaft. The SKU 4143.315.026 is precision-machined to ZF factory tolerances, making it essential for maintaining proper gear alignment and load distribution in heavy-duty industrial applications.
Symptoms of Failure
- Abnormal gear whining or grinding noise – A worn planet carrier often causes uneven gear meshing, producing a distinct high-pitched whine under load that intensifies during acceleration.
- Transmission slipping under heavy load – When the carrier’s bearing surfaces degrade, the planetary gears lose proper alignment, leading to intermittent power loss or slipping during excavation or towing.
- Metallic debris in transmission fluid – Fractures or spalling on the carrier surface generate fine metal particles that contaminate the oil, often visible during routine fluid changes.
- Vibration during gear engagement – Excessive play in the carrier assembly causes noticeable drivetrain shudder when shifting between forward and reverse gears.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4143.315.026 |
| OEM Reference | ZF 4143.315.026 |
| Material | High-strength alloy steel (case-hardened) |
| Weight | 4.2 kg (9.3 lbs) |
| Outer Diameter | 185 mm |
| Overall Height | 72 mm |
| Bore Diameter | 45 mm |
| Heat Treatment | Carburized and tempered |
Compatibility
This planet carrier is engineered for the ZF HL 100 and HL 270 transmission series, which are commonly found in wheel loaders, forklifts, and material handlers. Based on its design and gear ratio characteristics, the 4143.315.026 is also compatible with the ZF WG180, WG200, and WG210 models used in mid-size construction equipment. It directly replaces the original carrier in 4-speed and 6-speed powershift variants. Always verify your transmission serial number before installation.
During replacement, the planet carrier integrates with the 4143101009: HOUSING and the 4143301025: HOUSING to form the complete planetary assembly. A new 0634313603: O-RING is required to seal the carrier-to-housing interface, while the 4475280018: SCREW PLUG secures the lubrication port. For a full overhaul, consider the 4143298457: SEAL KIT and the 0501342341: SUPPORT RING to restore all mating surfaces.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the planetary gear set |
| 4143301025 | HOUSING | Secondary housing for output shaft support |
| 0634313603 | O-RING | Seals carrier-to-housing joint |
| 4475280018 | SCREW PLUG | Closes lubrication access port |
| 0501342341 | SUPPORT RING | Provides axial support for carrier bearings |
| 4143298457 | SEAL KIT | Contains all gaskets and seals for rebuild |
| 0634313591 | O-RING | Seals the carrier-to-sun gear interface |
| 0636101068 | CAP SCREW | Fastens carrier to clutch drum |
| 4143221013 | THROTTLE VALVE | Controls hydraulic pressure to the clutch pack |
| 0634304484 | O-RING | Seals throttle valve bore |
