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| Parts Information Sheet | |
| Project | Details |
| Part Name | Front Axle Brake Shoe Return Spring (Upper Return Spring) |
| Outer Diameter (OD) | Typically approximately φ24mm - φ26mm (may vary slightly depending on batch) |
| Wire Diameter (Wire Dia) | Typically φ4.5mm or φ5.0mm spring steel wire |
| Free Length | Approximately 160mm - 180mm (including hooks at both ends) |
| Material | 65Mn (manganese steel) or equivalent high-strength spring steel, quenched and tempered |
| Surface Treatment | Typically galvanized, phosphated, or electrophoretically painted (mostly black or metallic original color) to improve corrosion resistance |
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Applicable Vehicle Models
Mainly compatible with vehicles equipped with FAW Jiefang (FAW) front axles and their matching front axles:
Jiefang J6P / J6L / J6H series heavy/medium-duty trucks
Jiefang J5P / J5M and their derivative models
FAW Jiefang Aowei, Hanwei, Longwei, and other series
Performance Characteristics
High Fatigue Life: Maintains stable elasticity even under high temperature (due to braking) and frequent stretching conditions.
Precise Return: High preload ensures the brake shoes return quickly upon release, preventing continuous friction between the shoes and the brake drum.
Corrosion Resistance: Surface treatment resists corrosion from road water and salt spray, preventing breakage due to rust.
