alternator ，059903019F，ALV2335DD，ALV2335GB，059903018J 059903018JX，059903019，059903019FX FOR Audi A6 3.0 2011-
Applicable models:Audi A6 3.0 2011-
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Reference part number:059903019F，ALV2335DD，ALV2335GB，059903018J 059903018JX，059903019，059903019FX 439756,439817,440346 440471，FG23S035，301N21176Z FG23S061，FG23S066
Product Attributes
| Rated output : | 12V 220A |
| Pulley : | 6PK |
| Size : | |
| Weight : | Net weight 7.15KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
Product Details
| Type : | Alternator |
| Specification : | 12V 220A |
| Pulley : | 6PK |
| Brand : | NUOJIN |
| Number : | 059903019F |
| Quality : | Remanufacture |
| Delivery time : | 30 days |
Structured and Authoritative Installation Method for Audi A6 12V Alternator
The installation of the Audi A6 12V alternator must follow the core process of "power-off safety → positioning and cleaning → standard bolt tightening → correct electrical wiring → belt tensioning → matching and verification". The keys are to tighten according to the original factory torque, ensure correct electrical connections, and achieve the standard belt tension. This method is applicable to most Audi A6 models (C6/C7, etc.). The following is a structured and authoritative installation method.
I. Installation Preparation and Pre - inspection
Vehicle and Safety
Park the vehicle stably, pull the handbrake, place wheel chocks, turn off the ignition switch, and disconnect the negative terminal of the battery (for models with ECU/power management system, connect a backup power supply to prevent data loss). Operate only after the engine has cooled down.
Clean the installation position and bracket, check that there is no interference with surrounding pipelines (fuel, cooling), and remove necessary guards/components for easy operation.
Tools and Accessories
| Category | Details |
|---|---|
| Special Tools | Torque wrench (accuracy ±3%), socket set, special tool for belt tensioner, alternator positioning tool (for some models) |
| Consumables | New alternator assembly, new self - locking nuts/bolts (disposable), seals/bushings, thread locker (e.g., Loctite 243) |
| Testing Equipment | Multimeter, Audi - specific diagnostic instrument (VAS 6150, suitable for BMS/ECU models) |
Component Inspection
The new alternator shall be free of external damage, with intact terminals and a smoothly rotating pulley without jamming or abnormal noise.
Check that the mounting bracket and bushing are free of cracks/deformation, the bolt holes are clean without burrs, confirm that the alternator model matches the vehicle, and the 12V output specifications are consistent.
II. Installation Steps (Applicable to Most Audi A6 12V Alternator Models)
Positioning and Pre - fixing
Place the alternator into the mounting bracket, align with the positioning pins/bolt holes, install the fixing bolts and hand - tighten them until they fit, do not fully tighten.
If the bushing is too tight, gently tap the bolt head to reset the bushing to ensure normal clamping force after installation.
Electrical Connection
First, connect the main power terminal (B+). The torque shall comply with the vehicle model specifications (usually 25-35N・m). After tightening, put on an insulating sleeve to prevent short circuits.
Then connect the excitation/signal plug, insert it firmly according to the mark and lock it. Fix the wire harness clips to avoid interference with the belt/heat - dissipating components.
Bolt Tightening
Tighten the fixing bolts in 2-3 times in a diagonal cross sequence. The common torque for Audi A6 alternator mounting bolts is 25-35N・m. For specific values, refer to the vehicle model manual.
Do not use an impact wrench to prevent bracket deformation or thread damage.
Belt Installation and Tensioning
Use a special tool to operate the belt tensioner, install the multi - groove belt according to the original factory routing direction, and ensure that the belt is aligned with the pulley grooves without deviation.
Release the tensioner, check that the belt tension meets the vehicle model requirements (common deflection is 5-8mm), fix the tensioner and re - check.
Reset and Initialization
Reinstall the guards/components, reconnect the negative terminal of the battery, and clear historical fault codes (if applicable).
For models with BMS/ECU, use the Audi - specific diagnostic instrument (VAS 6150) to perform alternator adaptation and system initialization after installation, so as to ensure that the ECU recognizes the new alternator and matches the charging current and logic.
III. Verification and Fault Prevention
Static Verification
After power - on, the alternator shall be free of abnormalities. When starting, the belt shall run normally without slipping or abnormal noise. Use a multimeter to measure the charging voltage, which shall be 13.5-14.5V, and there shall be no obvious fluctuation when the load is applied.
Check that the electrical connections are free of looseness and heating, and the wire harnesses have no interference.
Dynamic Testing
During idling and acceleration conditions, the alternator shall have no abnormal temperature rise and no charging system fault codes.
Monitor the charging voltage during the road test for 30 minutes to ensure stability, and there shall be no alarm messages such as "alternator circuit fault" or "abnormal charging".
Common Fault Avoidance
Avoid long - term idling or frequent starting and stopping to prevent alternator overload.
Regularly check the bolt tightening status and the connection of the terminals. Conduct timely maintenance in case of abnormal noise or alarm.
Core Installation Precautions for Audi A6 12V Alternator
These precautions are applicable to mainstream Audi A6 models (C6/C7, etc.), covering key aspects such as safe operation, positioning and fastening, electrical connection, belt assembly, verification and maintenance. They can effectively avoid faults like abnormal charging, belt deviation and electrical short circuits, ensuring the stable operation and service life of the alternator.
I. Safety and Pre - installation Preparation (Bottom - line Requirements)
Power Disconnection and Data Protection
Before disconnecting the negative terminal of the battery, an external backup power supply must be connected to models equipped with BMS/ECU to prevent data loss of the vehicle - mounted system, activation of the anti - theft function or disorder of ECU parameters. After the installation is completed, perform power reset in accordance with the vehicle - specific specifications and clear historical fault codes.
Operational Environment Safety
Park the vehicle stably, pull the handbrake and place wheel chocks. Operate only after the engine has completely cooled down to avoid burns from high - temperature components or inaccurate installation due to thermal expansion and deformation of parts.
When lifting the vehicle, it must be supported by safety stands. Never rely solely on a jack for load - bearing. Mark the parts such as guards and liners when removing them to facilitate re - installation.
Clean the mounting surface of the alternator and the joint surface of the bracket, and remove oil stains, iron filings and rust to ensure tight fitting without gaps and avoid abnormal noise caused by vibration.
Component and Tool Compliance
Priority should be given to using Audi original or authorized brand 12V alternators. Confirm that the model matches the vehicle configuration (e.g., models with start - stop function require a dedicated alternator). Never mix alternators of different powers and specifications.
The mounting bolts must be replaced with new disposable self - locking bolts/nuts. Impact tools such as impact wrenches are prohibited. A torque wrench with an accuracy of ±3% must be used to control the tightening force to prevent thread stripping or bracket deformation.
Check that the surrounding pipelines (cooling and fuel) and wire harnesses are free of aging and damage, and confirm that there is no risk of interference before installation.
References：
These traceable sources are categorized into four priority levels, suitable for technical file verification and compliance inspection of Audi A6 12V alternator installation precautions.
I. Audi Original Core Authoritative Basis (Highest Priority)
Audi Service Manual: It clearly specifies the alternator positioning, bushing reset, diagonal cross tightening sequence and torque (usually 25-35N・m) of bolts, electrical connection specifications, and adaptation procedures for ECU/BMS - equipped models for various vehicle models (C6/C7, etc.). It serves as the core technical source for installation operations.
Audi Technical Service Bulletins (TSB): It provides special prompts for alternator installation of specific batches of vehicles, including bushing replacement requirements and electrical system adaptation corrections, ensuring the installation adaptability of vehicles from different production batches.
Audi Original Maintenance Database (Erwin Platform): It offers vehicle - specific practical steps for alternator installation, special tool models, and requirements for replacing disposable bolts. Consistent with the content of the official service manual, it allows querying vehicle - specific parameters.
Operation Guide for Audi - Specific Diagnostic System (VAS 6150): It clarifies the alternator adaptation and charging system initialization process for models with BMS/ECU, ensuring that the ECU recognizes the new alternator and matches the charging current and logic.
II. Industry - General Specifications (Basic Reference)
QC/T 730-2005 "Technical Specifications for Automotive Starters": As a general standard in the automotive industry, it specifies the electrical performance, basic installation requirements, and electrical connection specifications of starters, providing a general technical basis for installation operations and applicable to the installation of starters for Audi and most commercial vehicles.
General Operation Specifications for the Automotive Maintenance Industry: It covers vehicle lifting safety, electrical power - off procedures, and standards for component cleaning and lubrication, providing compliance references for safe operations and general technologies during the installation process.
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