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Front/Rear Leaf Spring Assembly WG9425523010 WG9425523011 WG9931524011 WG9725520489
FUNCTION
1. Core Load-Bearing and Vertical Support: Smoothly transmits the entire vehicle's dead weight (including the chassis frame, engine, and cab), as well as the weight of the cargo or trailer, down to the axles and wheels.
2. Longitudinal/Lateral Guidance and Torque Transmission: The leaf spring itself serves as the suspension's guiding mechanism, thereby eliminating the need for additional control arms and tie rods. It is responsible for transmitting the driving forces generated by the wheels from the axle to the chassis frame, thereby propelling or decelerating the entire vehicle. Furthermore, when the truck is steering or traversing sloped terrain, it withstands lateral forces, preventing the axle from undergoing unwanted longitudinal displacement or lateral twisting.
3. Cushioning, Shock Absorption, and Energy Dissipation: When a heavy-duty truck travels over rough roads, construction sites, or pothole-ridden sections, the leaf springs undergo elastic bending deformation. By absorbing and attenuating the intense impact energy transmitted from the ground, they protect critical components-such as the engine, transmission, and sensitive onboard electronic equipment-from vibration-induced damage.
4. Frictional Damping and Attenuation: This function is most prominently demonstrated in multi-leaf rear axle springs (e.g., model WG9725520489). When a heavily loaded truck encounters severe bumps, intense relative sliding and friction occur between the individual steel leaves of the spring pack. This inter-leaf friction acts as a natural "shock absorber," rapidly attenuating the vertical oscillation of the vehicle body and preventing the vehicle from experiencing continuous, uncontrollable, and violent bouncing when traversing rugged terrain.
Recommended Wear Parts for Simultaneous Replacement
1. U-Bolts (Saddle Bolts): Once leaf springs are disassembled, the original bolts-having been subjected to tensile stress-are prone to plastic deformation. Reusing them makes them highly susceptible to stripped threads or failure to tighten securely, which can lead to the leaf springs shifting or becoming misaligned during subsequent driving.
2. Center Bolts (Core Bolts): For multi-leaf spring assemblies (e.g., WG9931524011 and WG9725520489), the central bolt used to align the individual leaves often becomes seized by rust during disassembly and installation, necessitating that it be cut off. Therefore, appropriate replacement parts should be kept on hand.
3. Leaf Spring Pins (Shackle Pins) and Rubber Bushings: The polyurethane or rubber bushings and pins located within the rolled eyes of the front low-leaf-count springs (WG9425523010/11) are particularly prone to wear. If these components are not replaced, installing the new springs may result in abnormal chassis noises and negatively affect steering wheel alignment.
DETAILS
| DESCRIPTION | Front/Rear Leaf Spring Assembly | PART NUMBER |
WG9425523010 WG9425523011 WG9931524011 WG9725520489 |
| WEIGHT | 5 kg | VOLUME | |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Maintenance Recommendations
1. Recommended Paired Replacement: If a leaf spring on one side requires replacement due to fatigue fracture or severe sagging, it is recommended to replace the assemblies on both the left and right sides simultaneously. Replacing only one side can easily result in uneven vehicle height (leaning) during operation, as well as severe lateral pulling and safety hazards during braking or cornering.
2. Inspect Associated Components: When replacing the assembly, it is recommended to simultaneously inspect-or replace-the U-bolts, shackle pins, and rubber bushings.
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