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Type :
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Starter Motor
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Specification :
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12V 1.4Kw
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Number of feet :
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8T
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Brand :
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NUOJIN
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Number :
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Quality :
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refurbish
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Delivery time :
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30 days
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The installation process of the Mitsubishi 12V 1.4kW starter complies with the general specifications for automotive starter installation while requiring adaptations to the structural characteristics of this power-rated model. Below are the detailed, actionable installation steps, including key adaptation details to ensure stable operation after installation:
First and foremost, confirm that the 12V voltage and 1.4kW power of the new starter are fully compatible with the target Mitsubishi vehicle model, and verify that the starter model matches the specifications stated in the vehicle service manual. Then inspect the starter for external collision damage or deformation; check that the drive gear is free of missing teeth, chipped edges, and severe wear. Shake the starter to ensure there is no abnormal noise indicating loose internal components; confirm that core parts such as the armature and coil are not exposed or damaged, and that all accompanying accessories (including bolts and terminals) are complete and undamaged.
Prepare basic tools including a socket wrench, a torque wrench with a range of 5–50N·m, and a Phillips screwdriver. Also have on hand specialized cleaning agent, compressed air, and clean rags for cleaning purposes. If the starter is installed in a low position on the Mitsubishi vehicle, additionally prepare a jack and vehicle stands to lift the vehicle body, ensuring sufficient operating space and safety.
First, disconnect the negative battery cable and secure it away from the battery terminals to prevent accidental contact and short circuits. Then locate the old starter at the junction of the engine and transmission, disconnect the power cable between the battery and the starter, as well as the control wire between the starter and the ignition switch. Unscrew the mounting nuts and remove the old starter assembly. Mark the wiring connection positions during removal to facilitate subsequent reconnection.
Wipe the mounting surface with specialized cleaning agent or alcohol to thoroughly remove oil stains, rust, and dust, ensuring a flat, impurity-free surface. Clean the mounting holes and the surface of any bolts that will be reused at the same time. Additionally, inspect the flywheel ring gear of the Mitsubishi vehicle for cracks, excessive tooth wear, and other defects. Repair or replace the ring gear if abnormalities are found to prevent adverse effects on the meshing of the new starter gear.
Precisely align the new starter with the mounting holes and adjust its angle slowly to avoid surrounding wire harnesses, oil pipes, and other components, preventing friction and interference during operation. The Mitsubishi 12V 1.4kW starter is typically secured with 2–3 mounting bolts; insert the bolts smoothly into the mounting holes one by one to avoid cross-threading and thread damage.
Tighten the bolts step by step with a torque wrench, controlling the torque within the range of 35–40N·m. Apply force evenly—over-tightening may cause deformation of the starter housing, squeezing the internal armature and bearings; under-tightening will lead to severe vibration during startup, potentially causing the starter to shift and affecting gear meshing.
Open the starter’s wire protection cover to expose the main power terminal and the control terminal. Secure the battery wire harness firmly to the main power terminal, and tighten the nut with a torque wrench to a torque of 6–10N·m. This torque ensures good electrical contact without damaging the terminal threads or gaskets. Then insert the control wire connector fully into the control terminal, and gently pull to confirm it is securely seated, preventing startup malfunctions caused by poor contact.
If the Mitsubishi vehicle is equipped with a wire harness bracket, fasten the wire harness in place with bolts, install wire harness clips, and organize the wiring to ensure it is kept away from moving engine parts. Perform a quick inspection of the main circuit to confirm there is no wire damage or insulation aging, avoiding reduced power supply efficiency for the 1.4kW starter due to wiring issues.
Recheck that the starter mounting bolts are tight, and that the electrical connections are secure and free of tangling. Reconnect and tighten the negative battery cable.
Power on the starter for a no-load test: observe that the starter runs smoothly without sharp, abnormal noise, and that the drive gear extends and retracts freely without jamming. Then start the engine to test if the starter can crank the engine successfully. The installation is deemed qualified if the engine starts smoothly with no jamming or slipping. If the starter cranks weakly, first check if the wire harnesses are loose or if the battery has sufficient charge. If these are normal, further inspect the meshing condition between the starter gear and the flywheel ring gear.
To ensure installation safety and stable equipment operation, the following precautions must be strictly followed when installing the Mitsubishi 12V 1.4kW starter, taking into account the structural characteristics of this power model and the adaptation requirements of Mitsubishi vehicle models:
Keep the negative battery terminal disconnected throughout the entire installation process. Wrap the cable with insulating tape or place it away from metal components and terminals to avoid accidental ground short circuits. This power-rated starter draws a large operating current; a short circuit can easily cause wire harness overheating or even ablation. Power-on testing is strictly prohibited before installation is fully completed to prevent hazards caused by accidental activation of the starter switch.
The torque for the starter mounting bolts must be strictly controlled within the range of 35–40N·m, and a calibrated torque wrench is recommended. Over-tightening will cause deformation of the aluminum alloy housing, squeezing the internal armature and bearings, leading to abnormal gear meshing noise or jamming. Under-tightening will result in severe vibration during startup, which may cause bolt loosening, starter displacement, or even damage to the flywheel ring gear.
The torque for the main power terminal nut is 6–10N·m. This torque ensures minimal terminal contact resistance without damaging the threads and gaskets. Insufficient torque will cause terminal heating and oxidation, reducing power supply efficiency. Excessive torque will crush the gaskets, also leading to poor contact.
The Mitsubishi 12V 1.4kW starter features high-precision meshing between the internal armature shaft and gears. If there is a hole alignment deviation during installation, use a rubber hammer to gently tap the edge of the housing for fine angle adjustment. Direct striking with a steel hammer is absolutely prohibited. Strong impact can cause bending of the armature shaft, chipping of the drive gear tooth surface, or open circuits in the internal coil.
The meshing clearance between the drive gear and the flywheel ring gear is a factory-set design value and does not require manual prying or adjustment. Forced intervention will damage meshing precision and result in gear rattling noise during startup.
References：
The installation precautions for the Mitsubishi 12V 1.4kW starter mentioned earlier are not derived from an exclusive official Mitsubishi technical document or a single authoritative source. Instead, they are comprehensively compiled by integrating the general installation and maintenance specifications for automotive starters in the industry, the adaptation characteristics of Mitsubishi vehicle models, and the general knowledge from multiple authoritative automotive maintenance platforms. The specific reference bases are as follows:
General Starter Disassembly and Assembly Specifications from AutohomeThe requirements specified on this platform, including disconnecting the battery ground cable prior to disassembly and assembly, strictly prohibiting violent striking of starter components, wiping electrical parts such as the armature with gasoline-soaked and thoroughly wrung-out cotton yarn, and tightening bolts according to the specified torque, serve as the core reference for formulating precautions such as standardized power disconnection operations, prohibition of violent assembly, and protection of electrical components against moisture and oil contamination. Meanwhile, its requirements for standardized no-load test operations and avoidance of prolonged operation also support the content of relevant testing precautions.
Starter Installation and Maintenance Guidelines from Daowen NetworkThe content in its documents, such as the requirement to keep the starter mounting surface clean and free of oil stains and rust, and the need to tighten bolts according to the specified torque, provides a reference for key points like cleaning the mounting area and precisely controlling bolt torque during installation. In addition, the emphasis on not prying the starter forcibly to avoid damaging installation alignment is also consistent with the relevant content in the precautions that prohibits forced adjustment of gear meshing clearance.
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