Overview
The ZF 4143.298.037 PLANETARY GEAR is a precision-engineered internal component designed for the HL 100 and HL 270 transmission series. This OEM genuine part serves as the core torque-multiplying element within the planetary gearset, directly managing load distribution between the sun gear and ring gear. Positioned in the main drive assembly, the 4143.298.037 ensures smooth power transfer under high-stress conditions. When installed alongside the 4143101022 HOUSING and the 4143301044 HOUSING, this planetary gear maintains precise alignment and reduces internal friction. The SKU 4143.298.037 is manufactured to ZF’s strict tolerances, guaranteeing a direct fit without modification.
Symptoms of Failure
When the ZF 4143.298.037 planetary gear begins to wear, operators often notice distinct performance issues. Gear slipping under load is a primary indicator, where the transmission momentarily loses drive power during acceleration. Metallic grinding noises from the gearbox, especially in lower gears, signal excessive wear on the planetary teeth. Oil contamination with metallic particles is another critical symptom, visible during routine fluid changes. Finally, erratic shifting patterns or delayed engagement can occur as the worn gear disrupts hydraulic pressure within the assembly. Addressing these symptoms early prevents damage to the 0631329135 SPRING PIN and other adjacent components.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4143.298.037 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Outer Diameter | 145 mm (estimated) |
| Inner Bore Diameter | 45 mm (estimated) |
| Tooth Count | 18 planetary teeth (estimated) |
| Weight | 2.8 kg (estimated) |
| OEM Reference | ZF 4143.298.037 |
| Heat Treatment | Carburized and tempered to HRC 58-62 |
Compatibility
This planetary gear is engineered for the ZF HL 100 and HL 270 transmission series. It is also compatible with the WG180, WG200, and WG210 models that share the same planetary carrier architecture. The 4143.298.037 fits both 4-speed and 6-speed variants within these series. For proper installation, ensure the 0636302014 SCREW PLUG is torqued to specification to maintain oil pressure integrity. Always verify compatibility with your specific transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101022 | HOUSING | Encloses planetary gear assembly |
| 4143301044 | HOUSING | Secondary housing for gear support |
| 0631329135 | SPRING PIN | Secures planetary carrier alignment |
| 0636302014 | SCREW PLUG | Seals hydraulic passages |
| 0634801057 | SEALING RING | Prevents oil leaks at joints |
| 4143301053 | CONNECTING PART | Links planetary gear to output shaft |
| 0636100600 | CAP SCREW | Fastens housing components |
| 0636101024 | CAP SCREW | High-torque fastener for carrier |
| 0730365159 | TYPE PLATE | Identifies transmission model |
| 0631311009 | GROOVED STUD | Positions planetary gear assembly |
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