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Type :
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Enginestarter
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Specification :
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12V 1.4KW
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Number of feet :
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13T
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Brand :
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NUO JIN
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Number :
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0001179516 0AM911023N
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Quality :
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Renovate
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Delivery time :
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10 days
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The 12V 1.4KW starter motor of Volkswagen is mostly compatible with the brand's small-displacement models. Its installation requires preliminary preparations such as power disconnection, followed by core operations including alignment and fixation, wiring connection, and final performance testing. The detailed procedure is as follows:
First, turn off the vehicle's ignition switch and disconnect the negative terminal cable of the storage battery to eliminate the risk of short circuits or electric shock during operation.
Prepare suitable tools such as a 12mm box-end wrench, socket set, and torque wrench. Meanwhile, verify that the model of the new starter motor matches the vehicle, and clean oil stains and dust from the connection between the engine and transmission (the starter mounting position).
If there is an interval after removing the old starter motor before installation, inspect components such as the transmission case bushing and helical spline of the new starter motor, and apply an appropriate amount of special grease to ensure smooth operation.
Alignment and Fixation of the Assembly: Precisely align the 12V 1.4KW starter motor with the mounting bracket of the engine and transmission. Insert the two fixing bolts and tighten them to a torque of 37N·m using a torque wrench to ensure the starter motor is securely fastened without looseness, avoiding vibration during operation.
Electrical Wiring Connection: First, connect the wiring connector of the starter motor, ensuring the plug is fully inserted and not loose. Then, connect the nut to terminal 30 and tighten it to a torque of 9.8N·m. Afterwards, close the terminal cover to prevent exposed wires from moisture or damage.
Fixation of Wiring Harness Accessories: Install the wiring harness bracket with bolts to a torque of 8.4N·m, then secure the two wiring harness clips in place. Arrange the wiring route properly to avoid contact between the wiring harness and high-temperature parts or rotating components of the engine.
Reconnect the negative terminal cable of the storage battery. After confirming no tools are left around the starter motor, turn on the ignition switch to start the vehicle. Observe whether the starter motor can smoothly drive the engine to operate and whether the drive gear retracts normally after startup.
If abnormal noises occur during startup or the engine fails to be driven, immediately turn off the ignition switch and inspect for issues such as loose bolts, incorrect wiring connections, or component jamming. If the startup is normal, let the vehicle stand for a short while and then perform a second startup test to confirm stable performance.
Below are the Core Precautions for Installing the 12V 1.4KW Starter Motor of Volkswagen (compiled based on Volkswagen's official repair manual specification TL-82109 and practical operation risk points). Covering four key dimensions—safety protection, component protection, installation accuracy, and fault prevention—these precautions are applicable to professional maintenance scenarios:
Before installation, the negative terminal of the storage battery must be disconnected (disconnection sequence: negative terminal first → positive terminal second; reconnection sequence after installation: positive terminal first → negative terminal second). After disconnection, wait for 5 minutes (to discharge residual capacitance in the circuit) to avoid short-circuit sparking during wiring connection, which may burn the solenoid switch or ECU.
The installation area must be kept away from the engine exhaust manifold (operating temperature can exceed 600℃). The wiring harness shall be fixed with special clips at a position ≥5cm away from high-temperature components. Smoking or using open flames near the storage battery is prohibited to avoid hydrogen explosion risks.
Insulated-handle tools (such as insulated sockets and box-end wrenches) must be used. Do not pry wires or terminals with metal rods. Torque wrenches must be calibrated in advance (error ≤±3%). Tightening bolts by feel is strictly prohibited (prone to bolt thread damage or loose fixation).
Handle with care; avoid collisions with the front drive gear and rear solenoid switch interface (internal coils and one-way clutch are precision components—collision may cause gear jamming or coil open circuit). When placing, use a soft cloth as a pad to prevent the housing from directly contacting ground oil stains or sharp metal edges.
Before connecting wiring plugs, clean oil stains/oxide layers on plug pins (wipe with anhydrous ethanol if necessary) to ensure no pin bending or deformation. Insert the plug vertically until a clicking sound confirms locking. Do not pull or tap the plug forcefully.
Clearly distinguish between Terminal 30 (permanent power terminal) and Terminal 50 (ignition switch control terminal) (terminals of Volkswagen models are usually marked with "30" and "50"). Never reverse the connections—reversal will directly burn the solenoid switch coil and may even cause a storage battery short circuit.
Only apply Volkswagen-specified high-temperature grease G052190A2 (temperature resistance range: -40℃~180℃) to the starter motor's helical splines and drive gear tooth surfaces. The application amount should be "thin and fully covered" (approximately 0.5g/cm²). Ordinary grease is prohibited (it melts and flows at high temperatures, leading to gear wear). Applying grease to the interior of the solenoid switch or motor rotor is strictly forbidden.
Starter motor fixing bolts (usually M10×1.5 specification) must be original or equivalent-strength bolts (grade ≥8.8). The tightening torque shall be strictly controlled at 37±2N·m (insufficient torque causes vibration during operation; excessive torque easily damages threaded holes or breaks bolts).
The tightening torque for wiring harness bracket bolts is 8.4±1N·m, and for Terminal 30 fixing nuts is 9.8±1N·m. Tighten in steps (pre-tighten first → final tighten second) to avoid uneven bolt stress.
When installing the starter motor, ensure the meshing clearance between the starter gear and the engine flywheel ring gear is 0.5~1.2mm (excessively small clearance causes gear jamming; excessively large clearance easily produces meshing noise). If the clearance is abnormal, inspect whether the mounting bracket is deformed (use a dial indicator to measure bracket flatness, error ≤0.3mm). Replace the bracket gasket if necessary to adjust the clearance.
References：
The precautions for installing the 12V 1.4KW starter motor of Volkswagen you previously reviewed are compiled by integrating Volkswagen's official maintenance specifications, industry universal standards, and practical operational experience. The core bases and relevant reference sources are as follows:
The Volkswagen repair manual TL-82109, bolt torque standards, and the process of discharging residual capacitance after power disconnection mentioned in the content are all derived from Volkswagen's official technical documents for starter motor maintenance of its models. Such manuals serve as the core maintenance basis for Volkswagen 4S stores and professional repair workshops. For example, the Volkswagen starter motor inspection and repair data included in Originality Documents clearly specifies requirements such as using a dedicated torque wrench for disassembling and installing the starter motor, and disconnecting the battery ground cable first—consistent with the tool specifications and safety operation requirements in the compiled content.
The content regarding the wiring harness being kept away from high-temperature components and the safety of electrical equipment installation aligns with the core requirements of ISO 6405 "Safety Standards for the Installation of Automotive Electrical Equipment". Such ISO standards are universal guidelines for the installation of automotive electrical components, regulating basic requirements such as high-temperature resistance, short-circuit prevention, and mechanical interference prevention during electrical component installation, and serving as a universal reference basis in the automotive maintenance field.
Practical articles on starter motor disassembly and installation published on platforms such as PCauto and Autohome also provide practical reference for the content. For instance, PCauto mentions that the Volkswagen Lavida's starter motor is secured with two M10 fixing screws, and Autohome emphasizes that violent knocking is strictly prohibited during starter motor disassembly and installation to avoid component damage from collisions. These practical risk points have been integrated into the component protection and fault prevention dimensions of the precautions.
For Volkswagen models based on the MQB platform (such as 1.4T and 1.5L) equipped with the 12V 1.4KW starter motor, the common maintenance characteristics of this platform's models have been referenced. For example, the unified requirements for wiring harness clip installation and terminal tightening torque for MQB platform models in Volkswagen's repair manuals, combined with the meshing clearance standards between the starter motor and flywheel ring gear for these models, have formed the specific content regarding installation accuracy in the precautions.
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