1. Introduktion og produktoversigtview
This manual provides essential information for the proper installation, operation, and maintenance of your DB Electrical 400-48168 Alternator. This unit is designed as a direct replacement for specific Mazda vehicles, ensuring reliable performance for your vehicle's electrical system.
An alternator is a key component in a vehicle's charging system. It converts mechanical energy from the engine into electrical energy to power the vehicle's electrical components and recharge the battery.
2. Sikkerhedsoplysninger
Always prioritize safety when working with automotive electrical systems. Failure to follow safety precautions can result in serious injury or damage to the vehicle.
- Disconnect the vehicle's battery before beginning any work on the electrical system to prevent accidental short circuits or electrical shocks.
- Brug passende personlige værnemidler (PPE), herunder sikkerhedsbriller og handsker.
- Ensure the vehicle is on a stable, level surface and properly supported if lifting is required.
- Allow the engine to cool down completely before working on components in the engine bay.
- Hvis du er usikker på et trin, skal du kontakte en kvalificeret biltekniker.
3. Opsætning og installation
This alternator is designed as a direct replacement for the specified Mazda models. It is crucial to verify that this part fits your vehicle before proceeding with installation.
3.1 Kontrol før installation
- Confirm the part number and specifications match your vehicle's requirements.
- Inspect the new alternator for any visible damage from shipping.
- Sørg for at alt nødvendigt værktøj og udstyr er tilgængeligt.
3.2 Installationstrin (generelle retningslinjer)
The following are general steps for alternator replacement. Specific procedures may vary by vehicle model. Refer to your vehicle's service manual for detailed instructions.
- Disconnect the negative battery terminal, then the positive battery terminal.
- Locate the existing alternator in the engine bay.
- Loosen the serpentine belt tensioner and remove the belt from the alternator pulley.
- Disconnect all electrical connections from the old alternator (main power wire, regulator wire).
- Remove the mounting bolts securing the old alternator and carefully remove it from the vehicle.
- Position the new DB Electrical 400-48168 Alternator into place and secure it with the mounting bolts.
- Reconnect all electrical connections, ensuring they are tight and secure.
- Reinstall the serpentine belt onto the alternator pulley and tension it correctly.
- Reconnect the positive battery terminal, then the negative battery terminal.
- Start the engine and check for proper charging system operation (e.g., battery light off, voltage reading).
4. Driftsprincipper
The DB Electrical 400-48168 Alternator operates by converting mechanical energy from the engine's crankshaft (via the serpentine belt) into alternating current (AC) electricity. This AC current is then rectified into direct current (DC) by internal diodes, which is suitable for the vehicle's electrical system and battery charging.
Den interne bindtage regulator maintains a consistent output voltage, typically around 13.5 to 14.5 volts, regardless of engine speed or electrical load, protecting the battery and other electrical components from overcharging or undercharging.
5. Vedligeholdelse
Alternators are generally low-maintenance components. However, regular checks of related systems can prolong its lifespan and ensure optimal performance.
- Inspektion af serpentinrem: Regularly check the serpentine belt for cracks, fraying, or excessive wear. Ensure it has proper tension. A loose or worn belt can lead to insufficient charging.
- Batteriets sundhed: A weak or failing battery can put undue strain on the alternator. Ensure your vehicle's battery is in good condition and holds a charge properly.
- Elektriske forbindelser: Periodically inspect all electrical connections to the alternator for corrosion or looseness. Clean any corrosion and ensure connections are tight.
- Undgå overbelastning: Minimize the use of excessive electrical accessories when the engine is off or at very low RPMs to reduce strain on the charging system.
6. Fejlfinding
If you experience issues with your vehicle's charging system, consider the following common troubleshooting steps. Always consult a qualified technician if you are unsure.
| Symptom | Mulig årsag | Løsning |
|---|---|---|
| Batteriadvarselslampe lyser | Faulty alternator, loose/worn belt, wiring issue, bad battery. | Check belt tension, inspect wiring, test battery and alternator output. |
| Dæmpede forlygter/kabinelys | Insufficient alternator output, weak battery. | Test charging system voltage, check battery health. |
| Battery Drains Frequently | Alternator not charging, parasitic drain, failing battery. | Test charging system, check for parasitic drains, test battery. |
| Grinding or Whining Noise | Worn alternator bearings, loose pulley. | Inspect alternator for physical damage or looseness. Replacement may be necessary. |
7. Produktspecifikationer
The DB Electrical 400-48168 Alternator is manufactured to meet OEM specifications for reliable performance.
- Enhedstype: Generator
- Voltage: 12V
- Rotation: CW (med uret)
- Ampalder: 110 Amps
- Ur: 3
- Pulley Class: S6
- Regulator: IR (intern regulator)
- Fan type: IF (Intern ventilator)
- Varens vægt: 13.64 pund
- Produktdimensioner: 5.65 x 4.86 x 5 tommer
- Oprindelsesland: Kina
- Modelnummer: 400-48168
- OEM varenummer: AMT0231
7.1 Kompatible køretøjer
This alternator is compatible with the following Mazda vehicles:
- MAZDA 5: 2012-2015
- MAZDA CX-7: 2007-2012
7.2 Replaces OEM Numbers
This unit replaces the following OEM and aftermarket part numbers:
- ARROWHEAD: AMT0231
- ARROWHEAD (OEM) (OLD): A3TJ1191
- J & N: 400-48168
- LESTER: 11330
- MAZDA: L33G-18-300, L33G-18-300A, L33G-18-300R0A
- MITSUBISHI: A3TJ1191, A3TJ1191A
- REMY LETT UDSTYR: 12841
8. Produktbilleder

This image shows the primary view of the DB Electrical 400-48168 Alternator, highlighting the multi-groove pulley and the main body with cooling fins. The electrical terminals and mounting brackets are also visible.

En sideprofile of the alternator, emphasizing the main electrical connector and the robust casing. This view helps in identifying the correct wiring harness connection.

Dette billede viser en bagside view of the alternator, detailing the various electrical terminals and the voltage regulator housing. Proper identification of these connections is critical for installation.

A direct back view of the alternator, showcasing the cooling fan and the rear mounting bracket. The design of the fan is optimized for efficient heat dissipation.

An angled rear perspective of the alternator, providing a clearer view of the overall structure and the relationship between the electrical components and the main housing.

Another front angled view, offering a different perspective of the pulley and the front casing, useful for confirming the correct fitment and orientation.

En top-down view focusing on the pulley and the front bearing housing, illustrating the multi-rib design of the pulley for the serpentine belt.
9. Garantioplysninger
DB Electrical leverer en 1 års garanti on this alternator from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service.
If the product does not function flawlessly within one year of your order, DB Electrical will replace it. For warranty claims or assistance, please contact the seller or manufacturer directly.
10. Support og kontakt
For further assistance, technical support, or inquiries regarding your DB Electrical 400-48168 Alternator, please refer to the contact information provided by your retailer or visit the official DB Electrical webwebsted.
When contacting support, please have your product model number (400-48168) and purchase details readily available.





