Automobile generator A5TB1871, 23100VM80A AB5009, AF111364, 231075HQ are suitable for Nissan NP300 pickup truck (D22x) 03.2008-01.2015

Installation Method of the 12V Generator for Nissan Vehicles

Preparation

1. Turn off the vehicle, park it on a flat and safe place, engage the handbrake, and turn on the hazard lights.

2. Disconnect the negative battery cable to prevent electric shock or short circuits during installation, which could damage the vehicle’s electrical system.

3. Prepare the required tools, such as wrenches, screwdrivers, sockets, etc.

Removing the Old Generator

1. Loosen the generator drive belt: Use an appropriate tool to loosen the belt tensioner, then remove the belt from the generator pulley.

2. Disconnect the generator’s electrical connections: Locate the wire connectors on the generator, pull them out carefully, and mark the position of each connector for correct reinstallation later.

3. Loosen the generator fixing bolts: Use a wrench or socket to loosen and remove the bolts and nuts that secure the generator. The number and position of the bolts may vary by model.

4. Take out the old generator: Carefully remove the old generator from its installation position.

Installing the New Generator

1. Clean the installation position: Use cleaning tools to remove dust, oil stains, and debris from the installation area, ensuring the mounting surface is clean and tidy.

2. Install the new generator: Align the new generator with the installation position, ensure the mounting holes are accurately aligned, then temporarily fasten it with bolts and nuts—do not fully tighten them yet.

3. Connect the electrical circuits: According to the marked positions, plug the wire connectors back into the generator securely.

4. Install the drive belt: Properly fit the belt onto the pulleys of the generator and other related components, then adjust the belt tensioner to give the belt appropriate tension.

5. Tighten the fixing bolts: Check and fine-tune the generator’s position to ensure it is correct, then use tools to tighten the fixing bolts to the specified torque.

Post-installation Inspection

1. Reconnect the negative battery cable.

2. Start the engine and check if the generator is working normally. You can do this by observing whether the charging indicator light on the vehicle’s dashboard turns off within a few seconds after startup, or by using a multimeter to measure the voltage across the battery—when the engine is running, the voltage should be within the normal range, generally 13.5V to 14.5V.

3. Check the belt tension and operation to ensure there is no slipping or abnormal noise.

Core Precautions for Installing the 12V Generator on Nissan Vehicles

I. Safety Operation Specifications

• Continuous Power Disconnection: Before operation, must disconnect the negative battery cable and wait 5 minutes for the on-board capacitor to discharge. This avoids short circuits that could damage the ECU or electric shock hazards.

• Wear Protective Equipment: Insulating gloves and safety goggles are essential. They prevent electric shock from tools touching terminals, as well as injuries from falling or scratching components.

• Use Compatible Tools: Select sockets and wrenches of the correct specifications (avoid mismatched sizes). Apply moderate force when tightening bolts—never use brute force, which can cause bolt stripping or component deformation.

II. Component Inspection and Installation Key Points

• Confirm Model Compatibility: The new generator must be fully compatible with the vehicle model. Focus on verifying power parameters (usually 120A-150A), mounting hole dimensions, and prioritize original or certified accessories.

• Pre-installation Condition Check: Rotate the generator pulley before installation to ensure the bearing rotates smoothly without jamming or abnormal noise. Inspect for cracked housing and loose or oxidized terminals.

• Clean the Mounting Surface: Thoroughly remove oil stains, dust, and rust from the mounting bracket. Impurities can lead to insecure installation or poor heat dissipation.

• Strict Torque Control: Tighten fixing bolts to the torque specified in the maintenance manual (commonly 25-35N・m, subject to the specific model). Over-tightening may crack the housing; under-tightening can cause resonance and displacement during operation.

III. Key Wiring Connection Requirements

• Mark Wiring Positions: When removing the old generator, use labels or take photos to record the position of each connector and cable. Especially distinguish the B+ terminal, field wire (F/D+), and ground wire.

• Follow Wiring Sequence: First connect the B+ terminal cable (tighten to 8-12N・m torque) and install the insulating cover. Then plug in the wiring harness connector (confirm it clicks into place) and finally connect the ground wire. Reversing the sequence may cause short circuits.

• Ensure Reliable Connections: Fully insert and tighten all joints; wrap exposed terminals with insulating tape. Check that the cable insulation layer is intact (no aging or damage)—replace damaged cables before connection.

IV. Drive Belt Installation and Tension Adjustment

• Correct Routing and Installation: Fit the belt onto the pulleys following the original vehicle’s routing. Avoid twisting or misalignment; ensure the belt is fully seated in the pulley grooves without edge compression or dislodgment.

• Precise Tension Adjustment: Use a dedicated tool to adjust the tensioner. Press the middle of the belt—deflection should be controlled at 10-15mm. Some Nissan models have tension scales; align with the standard scale line.

• Subsequent Re-inspection: After installation, manually rotate the pulley to check smoothness. Recheck tension after the engine runs for 5 minutes and again after driving 30 kilometers to prevent loosening during long-term operation.

Additional Model-specific Notes

• Hybrid Models (e.g., Nissan Leaf, e-Power Series): Need to additionally disconnect the negative terminal of the high-voltage battery (requires professional tools and qualifications). Do not disassemble the integrated motor-generator assembly independently.

• Older Models (e.g., Sylphy Classic, Older Teana): Some use manual tensioners. Lock the tension via the adjustment bolt—never rely on feel for judgment.

• Qiche Dashi (qcds.com): It has precautions for installing a Nissan vehicle generator. For instance, when dealing with the generator circuit, the vehicle's power supply must be disconnected first, and when removing the generator, do not damage the surrounding parts.

• PCauto (pcauto.com.cn): It mentions the relevant precautions for correctly connecting the generator wires, including disconnecting the negative terminal of the car battery before connection, confirming that the generator model matches the vehicle and its appearance is not damaged, clarifying the key connection points during connection, and checking whether the connection is correct and firm after connection.

• Autohome (autohome.com.cn): In its relevant content, it is mentioned that when connecting the generator, appropriate tools should be prepared, the generator model and specification should be confirmed to match the vehicle, the negative terminal of the vehicle battery should be disconnected, and attention should be paid to the sequence, firmness, and insulation during connection.