QA1 TD902

QA1 TD902 Double Adjustable Stocker Shock Instruction Manual

Model: TD902

Introducció

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.

Informació important de seguretat

ADVERTIMENT: 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.

  • Assegureu-vos que el vehicle estigui ben recolzat sobre gats o un elevador abans de treballar a sota.
  • Never work on a vehicle supported only by a jack.
  • Consulteu el manual de servei del vostre vehicle per conèixer les especificacions i els procediments de parell d'apriete específics.
  • Mantingueu les mans i la roba allunyades de les parts mòbils.

Producte acabatview

The QA1 TD902 Double Adjustable Stocker Shock is engineered for precise control and durability. Key features include:

  • Double adjustable design for independent compression and rebound tuning.
  • Lightweight aluminum body for reduced unsprung weight.
  • 5/8" centerless ground, hard chrome plated, solid piston rod for strength and smooth operation.
  • Precision machined aluminum piston with PTFE piston band.
  • Deflective disc valving for consistent performance.
  • Polyurethane or bearing mounting hardware included (specific to application).
QA1 TD902 Double Adjustable Stocker Shock

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

Internal Components and Features

Diagram of QA1 TD902 Shock Absorber Internal Components

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.

Instruccions d'instal·lació

  1. Preparar el vehicle: Safely lift and support the vehicle using jack stands or a hydraulic lift. Ensure the suspension is unloaded.
  2. Remove Old Shocks: Locate and remove the existing shock absorbers. This typically involves unbolting the upper and lower mounting points. Retain any reusable hardware if applicable.
  3. Inspeccioneu els punts de muntatge: Clean and inspect the vehicle's shock mounting points for any damage, corrosion, or wear. Repair as necessary.
  4. Instal·leu nous amortidors:
    • Install the provided polyurethane bushings or bearing mounting hardware onto the QA1 TD902 shock.
    • Position the new shock absorber into the upper mounting point and secure it with the appropriate hardware. Do not fully tighten at this stage.
    • Extend or compress the shock as needed to align with the lower mounting point. Secure with hardware.
  5. Fixadors de parell: With the vehicle's weight on the suspension (or at ride height), tighten all mounting bolts to the vehicle manufacturer's specified torque values. Refer to your vehicle's service manual.
  6. Comprovació final: Double-check all fasteners for proper torque. Ensure there is no interference with other suspension or vehicle components.

Nota: For coil-over applications, specific coil-over hardware will be included and should be installed according to the separate coil-over instructions.

Ajust i funcionament

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.

Procediment d'ajust:

  1. Locate Adjusters: The shock features two adjustment knobs, typically located at the bottom of the shock body. One knob controls compression, and the other controls rebound. Refer to the markings (e.g., 'C' for Compression, 'R' for Rebound) on the shock body.
  2. Configuració inicial: It is recommended to start with both compression and rebound adjusters set to a neutral or manufacturer-recommended baseline. This is often achieved by turning the knob fully counter-clockwise until it stops (zero clicks), then turning it clockwise a specified number of clicks. Consult QA1 documentation for specific baseline settings if available.
  3. Adjusting Compression: Turning the compression knob clockwise increases the damping force during shock compression (when the wheel moves upwards). This can help control body roll and dive.
  4. Adjusting Rebound: Turning the rebound knob clockwise increases the damping force during shock extension (when the wheel moves downwards). This helps control how quickly the wheel returns to its original position after hitting a bump, improving tire contact with the road.
  5. Ajustos incrementals: Make small adjustments (1-2 clicks at a time) and test the vehicle's behavior. Note your settings for future reference.
  6. Simetria: Ensure that adjustments are made symmetrically across the vehicle (e.g., both front shocks, or both rear shocks) unless specific tuning requires otherwise.

Consell: Keep a log of your adjustment settings and how they affect vehicle performance to find your optimal setup for different driving conditions.

Manteniment

Regular maintenance helps ensure the longevity and optimal performance of your QA1 TD902 shock absorbers.

  • Inspecció periòdica: Periodically inspect the shocks for any signs of leaks, damage to the body or piston rod, or worn bushings.
  • Neteja: Keep the shock bodies and piston rods clean, especially after driving in dirty or corrosive conditions. Use mild soap and water, then rinse thoroughly. Avoid harsh chemicals that could damage seals.
  • Comprovació de maquinari: Verify that all mounting hardware remains tight and secure. Re-torque fasteners to specification if necessary.
  • Piston Rod Protection: Avoid scratching or damaging the piston rod surface, as this can lead to seal failure and fluid leaks.
  • Casquilles: Inspect polyurethane bushings for cracking or excessive wear. Replace them if they show signs of degradation.

Resolució de problemes

If you experience issues with your QA1 TD902 shock absorbers, consult the following common troubleshooting steps:

SímptomaCausa possibleSolució
Excessive Bouncing/Poor Ride ControlIncorrecte 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 SuspensionIncorrecte damping settings (too stiff), incorrect spring rate.Decrease compression and/or rebound damping. Ensure adjustments are symmetrical.
Fluid Leaks from Shock BodyDamaged seal, bent piston rod, internal component failure.A leaking shock requires replacement or professional rebuilding. Contact QA1 support.
Clunking or Rattling NoiseLoose 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.

Especificacions

MarcaQA1
Número de modelTD902
Posició de peces d'automòbilCenter (Rear Shock Absorber)
EstilDoble Ajustable
Tipus de servei del vehicleCar, Truck (Fits Chevrolet Bel Air)
Acabat exteriorAlumini raspallat
MaterialAlumini
Número de peça OEMTD902
UPC806990060587
Pes de l'article5 lliures
Dimensions del producte19 x 3.75 x 3.5 polzades

Garantia i Suport

QA1 products are manufactured to high standards. For specific warranty information regarding your TD902 Double Adjustable Stocker Shock, please refer to the official QA1 weblloc web o contacteu directament amb el servei d'atenció al client. Conserveu el comprovant de compra per a reclamacions de garantia.

For technical assistance, installation questions, or troubleshooting beyond the scope of this manual, please contact QA1 customer support:

  • QA1 Oficial Weblloc: www.qa1.net
  • Atenció al client: Consulteu el website for current contact information (phone, email).

© 2025 QA1 Precision Products, Inc. All rights reserved.

This manual is for informational purposes only. QA1 is not responsible for errors or omissions.

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