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HOWO T7H Front Leaf Spring Seat WG9925522115 FROM SINOTRUK COMPANY
It is installed above the vehicle's front axle or at the front suspension position, situated beneath the front leaf springs, and is secured to the vehicle frame or front axle via bolts.
FUNCTION
1. Securing and Supporting the Front Leaf Spring: Firmly anchors the lower section of the front leaf spring to the front axle or vehicle frame, thereby supporting the entire weight of the vehicle's front axle and absorbing road impacts.
2. Maintaining Correct Spring Positioning: Prevents the leaf spring from shifting longitudinally or laterally during vehicle operation, ensuring the precise geometric alignment of the suspension system.
3. Transmitting and Cushioning Loads: Uniformly transmits road impact forces to the vehicle frame via the leaf spring, while simultaneously providing a degree of shock absorption in conjunction with rubber pads.
4. Protecting the Suspension System: Minimizes direct, rigid contact between the leaf spring and the front axle, thereby extending the service life of the leaf spring, the front axle, and associated fasteners.
Working Principle
The front leaf spring seat is secured to the front axle or vehicle frame via a high-strength cast iron or steel plate structure. The leaf spring rests directly within the seat's recessed groove, while U-bolts firmly clamp the spring against the seat. During vehicle operation, road surface impacts cause the leaf spring to flex and deform; the seat is responsible for reliably transmitting these forces and limiting the spring's range of motion, thereby fulfilling the multifaceted functions of support, positioning, and cushioning.
Advantages
| Actual Application Effects | Specific Performance (for HOWO / SITRAK Heavy Trucks) |
|---|---|
| Improved load-carrying capacity | Reliably supports the front axle weight under heavy-load and full-load conditions, ensuring vehicle stability and passability on complex road surfaces. |
| Improved ride smoothness | Effectively cushions road bumps, reduces vibration transmitted to the cab, and enhances driving comfort. |
| Enhanced suspension durability | Reduces fatigue fractures of the leaf spring caused by position misalignment, lowering the failure rate of the front suspension system. |
| Enhanced driving safety | Maintains accurate front wheel alignment, preventing issues such as drifting, steering wobble, or unstable braking caused by damaged spring seats. |
| Adaptation to harsh conditions | Suitable for high-intensity environments such as mining, construction sites, and long-haul heavy transport; the structure is robust and resistant to deformation or breakage. |
DETAILS
| DESCRIPTION | Front Leaf Spring Seat | PART NUMBER | WG9925522115 |
| WEIGHT |
2KG |
VOLUME |
17.2 cm × 9 cm × 8.8 cm |
| 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 |
The leaf spring seat is a safety-critical chassis component. When performing work on it, the vehicle must be supported using a vehicle lift or safety stands; performing work while the vehicle is supported solely by a jack is strictly prohibited. It is recommended that this procedure be performed by a professional technician.
Maintenance Recommendations
| Maintenance Item | Recommended Interval | Specific Actions |
|---|---|---|
| Visual Inspection (Cracks, Deformation, Wear) | Every 10,000 km or monthly | Check the spring seat for cracks, deformation, or severe wear. Inspect U-bolts for looseness or rust. |
| Bolt Tightening Check | Every 20,000 km | Re-torque the U-bolt nuts to the specified value. |
| Leaf Spring and Seat Contact Check | Every 30,000 km | Check for gaps, misalignment, or abnormal noise between the leaf spring and the seat. |
| Complete Front Suspension Inspection | Every 50,000 km | Inspect the front leaf spring, shackles, pins, and other related components. |
| Replacement Interval | Every 80,000–150,000 km or when damage appears | Shorten the interval under heavy-load or harsh road conditions. |
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