CF12/CF14 Pulley Kit For Modern Kia KAPPA Elanter CVT Transmission

Function: Critical component in CVT system, controlling gear ratio via adjustable primary/secondary pulley diameters.

Key Features:

• Material: High-grade steel pulleys with hardened conical surfaces for belt/chain traction

• Precision: Micron-level surface finish (Ra <0.2μm) to minimize belt wear

• Hydraulic Actuation: Integrated piston channels for smooth ratio changes

Common Failure Modes:

1. Surface Pitting: Contaminated CVT fluid causes micro-abrasions → shudder (P17F0)

2. Bearing Wear: Leads to axial play (>0.1mm) causing belt misalignment

3. Seal Degradation: Results in pressure loss and ratio slip

Maintenance Criticals:

• Use only Hyundai/Kia SP-IV CVT fluid

• Replace both pulleys as a set to ensure proper belt tracking

• Perform TCU reset after replacement for adaptive learning