ZF 4143.315.069 RING GEAR for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 4143.315.069 RING GEAR is a critical internal component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part functions as the primary torque-transfer interface within the planetary gear set, directly engaging with the sun gear and planet carriers to facilitate smooth ratio changes under heavy load. The ring gear’s internal teeth mesh with planetary gears to distribute power evenly across the assembly, reducing stress on adjacent components. The SKU 4143.315.069 is precision-machined to ZF’s original specifications, ensuring exact fitment and long service life. It is commonly installed alongside the 4143101022 HOUSING and the 4143301044 HOUSING, which provide structural support and alignment within the transmission casing.

Symptoms of Failure

When the ZF 4143.315.069 ring gear begins to wear, operators often notice distinct performance issues. Gear slipping under load is a primary indicator, where the transmission fails to maintain torque during acceleration or climbing. Metallic grinding noises from the gearbox, particularly in lower gears, signal tooth surface fatigue or pitting. Contaminated transmission fluid with metallic debris is another common symptom, as worn ring gear particles circulate through the system. Finally, erratic shifting patterns or delayed engagement can occur when the ring gear’s internal teeth lose their precise geometry, affecting hydraulic pressure regulation. Early detection of these failure symptoms can prevent damage to the 0631329135 SPRING PIN and other planetary set components.

Technical Specifications

Compatibility

This ring gear is designed for ZF’s WG-series powershift transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with the HL 100 Series and HL 270 Series transfer cases, where it serves as a final drive component. The part may be used in WG180 and WG200 transmissions when paired with the correct planetary carrier assembly, though verification of tooth count and spline dimensions is recommended. For complete assembly, ensure the 0636302014 SCREW PLUG is properly torqued to prevent fluid leaks from the housing.

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