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Type :
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starter
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Specification :
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12V 2KW
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Number of feet :
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11T
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Brand :
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nuojin
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Number :
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23300-EB71E 23300 -EB300
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Quality :
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Remanufacture
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Delivery time :
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10 day
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(Applicable to most model years and displacements, based on the common layout where the starter is installed between the engine and transmission and secured with two flange bolts)The installation sequence is the reverse of removal. The core requirements are power-off operation, thorough cleaning and precise alignment, standardized wiring, and strict torque control to prevent gear chattering, electrical short circuits, and terminal burnout.
Nissan Pathfinder: The starter motor is usually mounted between the engine and transmission. The vehicle needs to be lifted and the engine underguard removed to provide sufficient working space. Bolt quantity, torque values, and adjacent interference components may vary with different model years and displacements. For precise specifications, always refer to the official service manual corresponding to the vehicle’s VIN.
Ensure the engine is turned off and cooled down completely; engage the parking brake and park the vehicle on a level surface.
Wear insulating gloves and safety goggles; keep a fire extinguisher on standby for emergency use.
Disconnect the negative terminal of the battery and insulate it properly to prevent short circuits during live operations.
Socket set/wrenches, torque wrench, multimeter, feeler gauge; new starter motor (with matching model and ring gear parameters); conductive paste; rust inhibitor; cleaning cloths; Suzuki special lubricant (model 99000-25010) or equivalent high-temperature lubricant; prepare new gaskets/seals if necessary.
Verify that the part number, tooth count/keyway of the 8-tooth drive gear, plug and terminal specifications of the new starter match those of the old one.
Ensure the battery is fully charged (voltage range: 12.6–13.2V).
Inspect the flywheel/clutch ring gear for tooth chipping, and check the starter housing for cracks or deformation.
Replace the O-ring with a new one and apply lubricant to it.
Power-off and CleaningDisconnect and insulate the negative battery terminal. Clean the starter mounting surface, flywheel housing flange, and terminals to remove oil, rust, and dust; use fine sandpaper to polish severely rusted areas until metal luster is exposed if needed. For scooter models, remove the seat bucket/air filter box first to expose the starter position.
Positioning and Preliminary TighteningPlace the starter motor into the mounting position, insert the fixing bolts (usually 2 flange bolts), and hand-tighten them to leave room for adjustment. Ensure full contact of the mounting surfaces and smooth gear alignment; forcible prying to align bolt holes is strictly prohibited. Use a feeler gauge to check the meshing clearance between the 8-tooth drive gear and the flywheel/clutch ring gear (general reference value: 1.0–4.0 mm; refer to the official manual for precise data).
Electrical Connection (Low-current Circuits First, High-current Circuits Second to Prevent Short Circuits)Plug in the control wiring harness connector and confirm the clip is locked in place. Apply a small amount of conductive paste to the No.30 main power terminal (usually equipped with an insulating cover), and tighten the nut to the torque specified in the manual (general reference values: 10–15 N·m for passenger vehicles, 6–8 N·m for scooters; follow the official specifications for accurate values). Check the grounding connection and wiring harness routing: keep the harness away from high-temperature components (e.g., exhaust manifolds, turbo heat shields) and rotating parts (e.g., belts, pulleys); secure the harness with original factory clamps. Reinstall the insulating cover of the No.30 terminal.
Final Tightening and ReassemblyUse a torque wrench to tighten the starter fixing bolts to the value specified in the manual (general reference values: 30–40 N·m for passenger vehicles, 10 N·m for scooters; refer to the official manual for precise torque). Reinstall the underguard, air deflectors, etc. Double-check to ensure no tools or foreign objects are left in the working area.
Power Restoration and TestingReconnect the negative battery terminal and tighten it to the specified torque. Start the engine and observe whether the gear meshing is smooth without abnormal noise. Measure the voltage with a multimeter: the voltage should be ≥9.5V during startup and 13.8–14.5V at idle. Check the temperature of the starter housing and inspect for any fluid leakage.
The meshing clearance between the starter drive gear and the flywheel ring gear must strictly comply with Nissan's original factory standards (general reference value: 1.0–4.0 mm), and must be verified by actual measurement using a feeler gauge.
Excessively small clearance: It may cause gear jamming and accelerated wear during startup, and even lead to burnout of the solenoid switch coil.
Excessively large clearance: It will produce "gear chattering" noise, and long-term use will result in tooth chipping of the ring gear or drive gear, causing startup failure.
If the clearance fails to meet the standard, it should be corrected by adding or removing original factory adjusting gaskets between the starter motor and the engine block. The use of non-standard gaskets or arbitrary grinding of components is strictly prohibited.
Before installation, thoroughly clean the oil stains, rust, and dust on the starter flange surface and the flywheel housing mating surface. For severely rusted areas, use fine sandpaper to polish until the metal luster is exposed, to avoid poor fit of the mounting surface caused by impurities.
When placing the starter into position, it should fit naturally. Forcible prying to align the bolt holes is strictly prohibited to prevent housing deformation or gear meshing misalignment. After hand-tightening the fixing bolts, it is mandatory to recheck the meshing state of the gear and ring gear to ensure there is no eccentric wear or jamming.
Before installation, it is necessary to inspect the tooth surface condition of the flywheel ring gear. If there is tooth chipping, tooth thickness wear exceeding 1/3, or tooth surface adhesion, the ring gear must be replaced first; otherwise, it will directly cause starter gear chattering and startup difficulty.
Inspect the tooth surface wear and spline rust of the starter drive gear simultaneously. If the gear is severely worn or the spline is jammed, the starter motor should be replaced as a whole. Grinding and repairing the gear for continued use is prohibited.
References：
The two documents you received earlier, namely Installation Method for the 12V Starter Motor of Nissan Pathfinder and Key Precautions, are both practical guidelines compiled by me based on universal industry procedures, the typical layout of the Nissan Pathfinder (starter mounted between the engine and transmission, secured with two bolts), and after-sales maintenance experience. They are not direct verbatim excerpts from any publicly published book or official service manual.
Structure and ProceduresThe sequence of
Power-off → Cleaning and Alignment → Preliminary Tightening → Wiring → Final Tightening → Power Restoration → Testing is the universal industry standard for starter motor disassembly and installation. It aligns with the principle specified in most automakers' official manuals that "installation follows the reverse order of removal".
Key Parameters (Reference Values)Specifications such as the
1.0–4.0 mm meshing clearance, terminal/bolt torque values, and voltage ranges are derived from common after-sales standards for Nissan starter motors and maintenance experience with similar models. For precise data, always refer to the official service manual corresponding to the vehicle’s VIN.
Safety Rules and ProhibitionsRequirements including power-off operation, prohibition of forced alignment by prying, connecting low-current circuits before high-current ones, and strict torque control are fundamental safety guidelines for electrical and mechanical maintenance, applicable to the vast majority of vehicle models.
Model-specific Key PointsDetails such as the starter mounting position, removal and reinstallation of the engine underguard, and avoidance of the drive shaft in four-wheel-drive models are summarized based on the common chassis and powertrain layout of the Nissan Pathfinder.
If you require authoritative, factory-issued information, you can obtain it through the following methods:
Provide the vehicle’s model year, displacement, the last 8 digits of its VIN, or engine code. I can then help you locate the corresponding chapter in the official Nissan service manual and provide precise values for bolt positions, torque, and meshing clearance.
Self-inquiry: Log in to Nissan’s official after-sales system (e.g., Nissan FAST) or purchase the official service manual (in print or electronic format) for the relevant model year, then search for the section titled "Starter Motor".
Contact the after-sales department of an authorized Nissan dealer, provide the vehicle’s VIN, and request to review or copy the relevant disassembly and installation pages.
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