T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
| Quantity: | |
|---|---|
AZ9725520683
Sinotruk HOWO
| Attribute | Specification |
|---|---|
| Official Name | Rear Leaf Spring Rubber Support Assembly |
| Common Names | Rubber Bearer, Spring Cushion, Balance Shaft Rubber Pad |
| OEM Brand | SINOTRUK (China National Heavy Duty Truck Group) |
| Part Number | AZ9725520683 |
| Construction Type | Multi-layer laminated structure: alternating layers of steel plates and high-damping rubber |
| Rubber Material | High-quality natural rubber (NR) blended with polybutadiene rubber (BR) for enhanced elasticity and aging resistance |
| Hardness (Shore A) | 65–75 degrees |
| Steel Plate Material | Anti-corrosion treated structural carbon steel |
| Bonding Process | High-temperature vulcanization ensures strong adhesion between rubber and metal |
| Weight | Approx. 2.2 kg – 2.8 kg (varies slightly by manufacturer density) |
| Compressive Permanent Deformation | ≤ 20% after aging test |
| Tear Strength | ≥ 40 kN/m |
| Operating Temperature Range | -40°C to +70°C (short exposure up to 90°C possible) |
| Load Capacity | Designed to withstand dynamic loads from fully loaded rear axles (up to 13–18 tons) |
| Origin | Jinan, Shandong Province, China |
Name1
Name2
Confirm correct model: Use SINOTRUK EPC system to verify compatibility with your VIN/chassis.
Inspect new unit: Check for cracks, delamination (rubber separating from steel), swelling, or deformation.
Clean mounting surfaces: Remove rust, dirt, oil, and old sealant from both the bracket and spring seat.
Do not apply grease or mineral oil — these degrade rubber compounds.
Lift and Support Axle: Use jack stands or lift equipment — never rely solely on springs.
Remove Old Support:
Loosen and remove mounting bolts/nuts.
Extract carefully without damaging surrounding parts.
Position New Rubber Support (AZ9725520683):
Align with bracket holes and ensure proper orientation.
Avoid twisting during installation.
Insert Fasteners:
Install through-bolts with flat and spring washers.
Ensure even pressure distribution across contact surface.
Torque Properly:
Tighten diagonally in stages.
Final torque: Typically 200–250 N·m (confirm exact value per service manual).
Final Inspection:
Visually check alignment and seating.
Lower vehicle gradually and inspect under load.
