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Type :
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starter
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Specification :
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12 V 2.2 kW
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Number of feet :
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10T
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Brand :
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nuojin
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Number :
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233007S000 M2T85571
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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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The installation process of the 12V 2.2kW starter for Infiniti models is consistent with the starter installation logic of its same-series models and most fuel-powered vehicles. Combined with the practical installation characteristics of starters for Infiniti models such as the Q50L, the detailed installation steps are as follows. Before operation, prepare tools such as wrenches, sockets, and lubricants, and wear protective gloves:
First, verify the model of the new starter to confirm it is the 12V 2.2kW specification suitable for the vehicle. Check that its housing has no cracks and all components are complete. Then, disconnect the negative cable of the battery to avoid short circuits or accidental startup during operation. At the same time, clean the dust, oil stains, and rust from the starter installation area in the engine compartment (for most Infiniti models, this area is above the crossmember and at the junction of the engine and transmission) to ensure the installation surface is flat.
Place the new starter accurately at the installation position and align the mounting holes on the starter body with those on the engine side. Use bolts of the matching specification to temporarily secure the starter, then tighten the bolts to the torque specified in the vehicle repair manual—usually controlled at approximately 40-50N·m. Avoid loose bolts (which may cause the starter to vibrate during operation) or over-tightened bolts (which may damage the threads of the mounting seat).
Evenly apply special lubricant to parts such as the starter's transmission case bushing, spiral spline, and the sliding surface connected to the clutch. This reduces friction during component operation, extends the starter's service life, and prevents gear jamming issues from occurring later.
First, connect the starter's power cable (thick cable) to the B+ terminal of the starter, then tighten the fixing nut. The torque is recommended to be controlled at 12±2N·m to prevent terminal breakage caused by excessive torque. Next, plug in the connector of the control wiring harness (thin harness) and ensure the plug is fully locked in place. At the same time, organize the routing of the wiring harness to avoid interference with components such as the transmission counterweight. You can appropriately use tape to fix the wiring harness and prevent it from shaking.
Reconnect the negative cable of the battery. Before connection, recheck that the starter bolts and circuits are secure. Then conduct a startup test: turn the key or press the start button, and observe whether the starter can smoothly drive the engine to run without abnormal noise or gear jamming. If the startup is normal, the installation is complete; if problems such as weak startup or no response occur, recheck the circuit connections and the tightness of the bolts.
To avoid starter damage, vehicle circuit faults, or safety risks caused by incorrect installation, the following precautions (covering core dimensions such as safe operation, component protection, and process specifications) must be strictly followed:
Disconnect the battery negative terminal firstBefore installation, be sure to remove the battery negative cable (marked with "-") and wrap the end of the cable with insulating tape to prevent it from accidentally touching the negative terminal post. If the power is not disconnected, connecting the starter circuit may cause a short circuit, leading to wire harness ablation, battery damage, or even sparks that ignite oil stains in the engine compartment.
Wear protective equipmentDuring operation, wear insulated gloves (to prevent electric shock) and non-slip gloves (to avoid injury from falling tools). If the vehicle needs to be lifted (some models require starter installation from the bottom), use a qualified car lift or a jack with safety stands. Never support the vehicle with only a jack to prevent the vehicle from falling.
Keep away from fire sources and flammable materialsIf there are residual engine oil or gasoline stains in the engine compartment, clean them first. Smoking or approaching open flames during installation is prohibited to prevent sparks from short circuits igniting flammable materials.
Strictly verify the starter modelBefore installation, reconfirm that the specifications (12V voltage, 2.2kW power), interface type (number of terminals, mounting hole spacing) of the new starter match the original factory model corresponding to the vehicle's VIN code. Starters for Infiniti models with different displacements (e.g., 2.0T, 3.5L) may vary; incorrect installation will result in failure to start or damage to the engine flywheel ring gear.
Check component status and prohibit violent operation
For a new starter: Check that the housing has no cracks, the gears have no chipping, and the terminals have no oxidation.
For a used starter (if reused): Clean the commutator carbon deposits and check the brush wear (replace if wear exceeds 1/3).
Do not tap the starter body or gear end with a hammer during installation. The internal bearings and armature shaft of the starter have high precision; tapping may cause misalignment of internal components, leading to abnormal operation noise or jamming.
Prevent oxidation of circuit connectors
Before connecting the starter's B+ terminal (power cable), gently polish the oxide layer on the terminal and nut with fine sandpaper, then apply a small amount of conductive paste (to enhance conductivity). This prevents poor contact caused by oxide layers, which can lead to issues such as "weak starting or intermittent failure to start."
Tighten bolts according to torque standards
Starter body fixing bolts: Use a torque wrench to tighten them to the torque specified in the vehicle repair manual (40-50N·m for most Infiniti models). Do not tighten by hand feel. Loose bolts will cause severe vibration of the starter during operation, wearing the flywheel ring gear; over-tightened bolts may crack the starter mounting seat or engine block threads, requiring tapping repair later (which is costly).
Terminal nuts: The torque for the power cable (B+ terminal) is 12±2N·m. For the control wiring harness connector, "push gently until a clicking sound is heard" to confirm it is locked. Do not pull the wiring harness forcefully to avoid bending the pins inside the connector.
Use special grease for lubrication; no mixingApply only automotive starter-specific grease (e.g., lithium-based grease) to the starter's spiral splines, transmission case bushing, and clutch sliding surface. Do not replace it with engine oil or butter. Engine oil is prone to loss at high temperatures, and butter tends to solidify at low temperatures—both will cause gear lubrication failure, accelerating wear or jamming.
References：
The precautions for installing the 12V 2.2kW starter on Nissan Infiniti models you previously viewed do not originate from a single official document or specific authoritative source. Instead, they are integrated content combining the industry standards for starter installation of general fuel-powered vehicles, the maintenance characteristics of Infiniti models, and the general practical experience in the automotive maintenance field. The specific reference bases are as follows:
Core precautions such as disconnecting the negative terminal of the battery to prevent short circuits before installation, tightening bolts according to specified torque, and avoiding tapping the starter body are universal norms in the automotive maintenance industry. For example:
Autohome (a well-known Chinese automotive platform) mentions that when replacing a starter, the battery ground cable must be removed first and tapping components is prohibited.
PCauto (another major Chinese automotive information platform) clearly states that starter installation requires verifying the model and tightening bolts according to torque.
These contents served as important references during the integration process. In addition, test requirements such as "single startup time not exceeding 5 seconds" and "waiting 15 seconds before retrying" are also consistent with the starter usage and maintenance specifications mentioned on platforms like PCauto.
Contents in the precautions, such as the starter installation position (above the crossmember, at the junction of the engine and transmission) and the need to remove auxiliary components (e.g., intake manifold) for operation in some models, are derived based on the engine compartment layout and maintenance characteristics of common Infiniti models (such as the Q50L and Q70L). These details align with the assembly commonality of compact engine compartment components in such luxury fuel-powered vehicles, and also conform to the core principles mentioned in InfinitiManuals (e.g., requiring power disconnection during maintenance and standardizing wiring harness operation).
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