Mudell: TD902
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of your QA1 TD902 Double Adjustable Stocker Shock. This shock absorber is designed for specific automotive applications, including the Chevrolet Bel Air, to enhance vehicle performance and handling. Please read this manual thoroughly before proceeding with installation or adjustments to ensure proper function and safety.
TWISSIJA: Improper installation or adjustment of suspension components can lead to serious injury or death. Always wear appropriate personal protective equipment, including eye protection. If you are not confident in your ability to safely install or adjust this product, seek assistance from a qualified professional.
The QA1 TD902 Double Adjustable Stocker Shock is engineered for precise control and durability. Key features include:

Figure 1: QA1 TD902 Double Adjustable Stocker Shock. This image shows the complete shock absorber assembly with its polished aluminum body and adjustment knobs.

Figure 2: Detailed diagram illustrating the internal components of the QA1 TD902 shock absorber. This includes the piston rod, aluminum body, deflective disc valving, and adjustment mechanisms, highlighting features like the three-step sealing system and precision machined piston.
Nota: For coil-over applications, specific coil-over hardware will be included and should be installed according to the separate coil-over instructions.
The QA1 TD902 is a double adjustable shock, allowing independent control over compression (bump) and rebound (extension) damping. This enables fine-tuning of your vehicle's ride and handling characteristics.
Tip: Keep a log of your adjustment settings and how they affect vehicle performance to find your optimal setup for different driving conditions.
Regular maintenance helps ensure the longevity and optimal performance of your QA1 TD902 shock absorbers.
If you experience issues with your QA1 TD902 shock absorbers, consult the following common troubleshooting steps:
| Sintomu | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| Excessive Bouncing/Poor Ride Control | Żbaljata damping settings (too soft), worn shock, insufficient spring rate. | Increase compression and/or rebound damping. Inspect for leaks or damage. Consult a suspension specialist. |
| Harsh Ride/Stiff Suspension | Żbaljata damping settings (too stiff), incorrect spring rate. | Decrease compression and/or rebound damping. Ensure adjustments are symmetrical. |
| Fluid Leaks from Shock Body | Damaged seal, bent piston rod, internal component failure. | A leaking shock requires replacement or professional rebuilding. Contact QA1 support. |
| Clunking or Rattling Noise | Loose mounting hardware, worn bushings, internal shock damage. | Check and re-torque all mounting bolts. Inspect bushings for wear. If noise persists, inspect the shock for internal damage. |
If these steps do not resolve the issue, contact QA1 technical support for further assistance.
| Brand | QA1 |
| Numru tal-Mudell | TD902 |
| Pożizzjoni tal-Parti tal-Auto | Center (Rear Shock Absorber) |
| Stil | Doppju Aġġustabbli |
| Tip ta 'Servizz tal-Vettura | Car, Truck (Fits Chevrolet Bel Air) |
| Finish ta 'barra | Aluminju brushed |
| Materjal | Aluminju |
| Numru tal-Parti OEM | TD902 |
| UPC | 806990060587 |
| Piż tal-oġġett | 5 liri |
| Dimensjonijiet tal-Prodott | 19 x 3.75 x 3.5 pulzieri |
QA1 products are manufactured to high standards. For specific warranty information regarding your TD902 Double Adjustable Stocker Shock, please refer to the official QA1 webis-sit jew ikkuntattja lis-servizz tal-konsumatur tagħhom direttament. Żomm il-prova tax-xiri tiegħek għal talbiet ta' garanzija.
For technical assistance, installation questions, or troubleshooting beyond the scope of this manual, please contact QA1 customer support:
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