This is a V-type thrust rod assembly specifically for Sinotruk HOWO models, with part number AZ9725529272.

1. Core Identification

• Part Number & Vehicle Model: Genuine part number for Sinotruk HOWO, SITRAK, and other heavy-duty trucks, specially used in the rear suspension system of HOWO T7H, C7H, and similar models.

• Structure:

  • V-shaped connecting rod: The curved metal rod in the middle, typically forged from high-strength alloy steel, designed to withstand tremendous tension and compression forces.

  • Ball joint assembly (V-end and straight end): The articulating joint parts at both ends, consisting of a large spherical joint and a matching rubber bushing (commonly known as the "rubber core"), which cushions road impacts and allows multi-angle articulation.

2. Function & Role

• Positioning & Anti-displacement: When the truck is fully loaded or driving on rough roads, the V-type thrust rod connects the frame and rear axle, preventing the rear axle from moving forward/backward or shifting sideways, ensuring the drive axle remains stable.

• Force transmission: It effectively transmits traction and braking forces, overcoming the inability of conventional leaf springs to handle lateral forces, thus ensuring driving safety and handling stability.

• Cushioning & vibration damping: The internal rubber bushing absorbs high-frequency vibrations and impacts from the road surface, improving ride comfort while protecting the axle and frame from hard impacts.

3. Application Scenarios

• Applicable Models: Mainly used in heavy-duty trucks and tractors under Sinotruk, including the HOWO series (e.g., T7H, T5G, C7H), SITRAK, and other models equipped with V-type rod suspension.

4. Maintenance & Replacement Tips

• Wear parts: The rubber bushing in the thrust rod is a wear part. If you notice unusual "clunking" noises while driving, or cracks/deformation on the thrust rod surface, timely replacement is required.

• Assembly replacement: To ensure even loading on both sides, it is generally recommended to replace them in pairs rather than repairing one side individually; otherwise, the axle may become misaligned.