Installation Method of 12V 1.2KW Starter for Great Wall Motors

Pre-installation Preparation

1. First, confirm that the model of the new starter is compatible with the corresponding Great Wall vehicle model. Check that the 12V 1.2KW starter has no external damage and all components are complete.

2. Open the vehicle hood and disconnect the cable from the negative terminal of the battery to prevent short circuits during installation, thus ensuring operational safety. Meanwhile, clean the oil stains and dust at the junction of the engine and transmission (the standard mounting position of the starter) to keep the mounting surface flat and clean.

Alignment and Installation of the Starter Main Body

1. Align the new 12V 1.2KW starter with the mounting position, ensuring that its fixing bolt holes are perfectly aligned with the mounting holes on the engine side. Avoid forced alignment to prevent thread damage.

2. Pass the dedicated bolts through the mounting holes to fix the starter. Use a torque wrench to tighten the bolts to a torque of 37N·m, ensuring the starter is firmly installed without loosening or shaking, so as to prevent resonance during operation.

Electrical Circuit Connection

1. First, connect the starter's connector. Then, locate Terminal 30 on the starter and fasten it with a nut. Tighten the nut to a torque of 9.8N·m when connecting.

2. If there is a wire harness bracket around the starter, fix it with bolts at a torque of approximately 8.4N·m. Afterwards, install the wire harness clips in place and arrange the wires neatly to prevent them from tangling or coming into contact with high-temperature engine components. Finally, close the terminal cover to prevent dust and oil from entering the circuit interfaces.

Power Restoration and Testing

1. Reconnect the negative battery cable and ensure it is securely fastened.

2. Start the vehicle for a no-load test. Observe whether the starter can drive the engine to run smoothly without abnormal noise or jamming. If the engine starts smoothly without any anomalies, the installation is successful. If problems such as weak starting or failure to start occur, check whether the circuit connections are loose or the starter is properly installed.

Installation Precautions for 12V 1.2KW Starter of Great Wall Motors

1. Power-off Operation Must Be Performed FirstDisconnect the negative terminal of the storage battery before installation and ensure a complete power-off to prevent circuit short circuits during the installation process, which could cause sparks, ablation of electrical components, or electric shock hazards. Do not reconnect the negative battery terminal until the installation is fully completed.
2. Verification of Model and CompatibilityDouble-check that the starter model is 12V 1.2KW and compatible with the corresponding Great Wall vehicle model before installation. Verify that the mounting holes of the starter and the gear module match the engine flywheel ring gear. This prevents failure of meshing or damage to the flywheel ring gear after installation due to model mismatch.
3. Bolt Tightening Must Comply with Torque Standards Strictly

• The torque of the fixing bolts for the starter main body should be controlled at 37N·m. Loose bolts will lead to resonance and abnormal noise during starter operation, while over-tightening may cause bolt thread slipping or deformation of the mounting surface.

• The torque of the connecting nut for Terminal 30 is 9.8N·m, and the torque for the wire harness bracket bolts is 8.4N·m. Never tighten bolts with brute force; it is recommended to use a torque wrench for operation.

4. Standardized Circuit Connection

• Connection Sequence: First connect the internal connector of the starter, then connect the power cable to Terminal 30, and finally fix the wire harness bracket and clips.

• Ensure that circuit connectors are free of oxidation and looseness, and fully close the terminal cover to prevent oil stains and dust from entering and causing poor contact. When arranging the wire harness, avoid contact with high-temperature engine components such as the exhaust pipe and cylinder block to prevent aging and damage to the wire harness.

5. Lubrication and Protection of Mechanical ComponentsApply special high-temperature lubricating grease to moving parts such as the starter transmission case bushing and spline. Never use ordinary grease (it melts and runs off easily at high temperatures). Use an appropriate amount of lubricant during application to avoid excessive grease splashing onto the meshing surface of the flywheel ring gear, which would affect transmission performance.
6. No Violent Operation AllowedIf there is a hole misalignment when aligning the starter, fine-tune the angle of the starter. Never strike or knock it forcibly. When removing the old starter or installing the new one, avoid collision with precision components such as the electromagnetic switch and gear set to prevent damage to the internal structure.
7. Step-by-Step Verification During Testing

• For the first start-up, it is recommended to perform a no-load test first: energize the starter briefly, observe whether the starter gear extends smoothly and whether there is any jamming or abnormal noise. Only connect the engine flywheel ring gear after confirming there are no anomalies.

• During the vehicle start-up test, the single start-up duration should not exceed 5 seconds. If the start-up fails, wait for at least 15 seconds before retrying to prevent the starter from overheating and burning out due to prolonged energization.

8. Post-installation Inspection and ProtectionAfter installation, recheck that all bolts and circuit connectors are tight. Confirm that there is no interference between the starter and surrounding components (such as the exhaust pipe and oil pipe) and that sufficient working clearance is reserved. If the vehicle is parked for a long time, regularly inspect the condition of the starter wiring terminals to prevent rusting.
9. Professional Operation SuggestionsIf you lack maintenance experience, or encounter problems such as weak starting, abnormal gear meshing noise, or failure to start after installation, do not disassemble the starter by yourself. It is recommended to refer to the official maintenance manual of the corresponding Great Wall vehicle model or contact professional maintenance personnel for handling.

References：

Source Note of the Installation Method and Precautions for Great Wall Motors 12V 1.2KW Starter

1. Universal Torque Standards for Starter Installation

   The torque parameters mentioned herein—including the 37N·m torque for the fixing bolts of the starter main body, 9.8N·m for the connecting nut of Terminal 30, and 8.4N·m for the bolts of the wire harness bracket—are consistent with the universal starter installation torque specifications published on platforms such as Autohome and PCauto Encyclopedia. These are common standard parameters for starter assembly in the auto repair industry.
2. Common Installation Characteristics of Starters for Great Wall Models

   According to the starter installation content for Great Wall models such as the C50 and Wingle 7 published on Qiche Dashizhang (Auto Master), starters for most Great Wall vehicles are installed at the junction of the engine and transmission. The core installation steps—power-off, alignment and fixation, circuit connection, and power-on testing—are the exclusive assembly characteristics of Great Wall models referenced in this summary.
3. General Operational Guidelines in the Auto Repair Field

   General precautions, such as disconnecting the negative terminal of the storage battery before installation to prevent short circuits, avoiding violent operations to protect precision components, and conducting a no-load test after installation, are universally emphasized in the starter maintenance columns of platforms like PCauto and Autohome. These are universal protective requirements for the installation of starter and other automotive electrical components.