
JF11 Y4MG-12100 401745580 Weichai generator
Applicable models:Weichai generator
Reference part number:JF11 Y4MG-12100 401745580 BX4185、301628RIM、BX4277、301628RIH、BAO3214、0 986 041 851、F 032 CA1 470、301628RID、MQ33923、241102982、401745580、MQ30305、ALT-2047、HCA1628IR、MQ33754、301628RIB、S542420A、9041850F、210051HQ
| Rated output : | 14V 40A |
| Pulley : | 单 B80 |
| Size : | 24*18*17single unit inner box |
| Weight : | net weight:3.6KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | ACgenerator Alternator |
| Specification : | 14V 40A |
| Pulley : | 单 B80 |
| Brand : | NUOJIN |
| Number : | JF11 Y4MG-12100 |
| Quality : | Remanufacture |
| Delivery time : | 10 DAYS |



Installation Steps and Precautions for Weichai 14V Generator
Pre-installation Preparation
Tool Preparation: Prepare tools such as screwdrivers, wrenches, and spirit levels.
Installation Environment Confirmation: Select a well-ventilated area away from flammable, explosive, and corrosive substances. The ground must be flat and capable of bearing the generator’s weight.
Equipment Inspection: Check that the generator and its accessories are intact and all components are complete to ensure they meet installation requirements.
Installation Steps
Fix the Generator: Install the generator at a suitable position such as the front or rear end of the engine, ensuring easy connection to the engine and good ventilation/heat dissipation. Adjust the generator to a horizontal state with a spirit level, then firmly fix it with bolts to prevent vibration and loosening during operation.
Connect the Transmission Device: Usually, a belt or chain is used to connect the generator to the engine crankshaft. Adjust the tension of the belt or chain—press the midpoint between the two pulleys with a force of 15 kg; a deflection of 10-15mm is considered normal.
Connect Fuel Pipes and Exhaust Pipes: According to the generator’s fuel type, connect the fuel pipes tightly to ensure no leakage. Connect appropriate exhaust pipes—for indoor use, the exhaust pipe must be led outdoors, with a diameter not smaller than that of the muffler’s exhaust port, and no more than 3 elbows. If the exhaust pipe is installed vertically upward, a rain cover must be added.
Connect Power Lines: In accordance with the generator’s electrical wiring diagram, correctly connect the positive and negative wires as well as other control lines to ensure secure and error-free connections. The grounding wire is generally connected to the end of the generator chassis and must be attached to a proper grounding point. For the 14V system, ensure the wire specification meets the power requirements of the vehicle’s electrical equipment.
Check Fluids: In accordance with the generator’s operation manual, inspect and add an appropriate amount of engine oil and coolant to ensure sufficient fluid supply.
Post-installation Inspection and Commissioning
Startup Test: After completing all installation steps, conduct a startup test to check if the generator starts normally and operates stably. Observe for any abnormal noise or vibration.
Debugging and Calibration: Perform debugging and calibration as needed to ensure the generator operates at optimal performance.
Key Notes (Supplementary Clarification)
For exhaust pipe installation: Maintain a 5-10° downward slope to prevent rainwater ingress (consistent with the previously emphasized precautions for Weichai generators).
For electrical safety: Ensure reliable protective grounding of the generator housing; neutral point grounding (if required) must be performed by professionals with lightning protection devices installed—sharing the municipal power grounding system for neutral point grounding is strictly prohibited.
Precautions for Installing Weichai 14V Generator
1. Installation Environment Selection
Good Ventilation: The generator end must have sufficient air inlets, and the diesel engine end must have good air outlets. The area of the air outlet should be more than 1.5 times that of the water tank to ensure heat dissipation effect.
Keep Away from Hazardous Materials: The installation site should be far from flammable and explosive materials. Avoid placing items that can generate corrosive gases and vapors such as acid and alkali nearby. A fire-fighting device should be configured if conditions permit.
Reasonable Layout: It should be close to the load center for convenient incoming and outgoing lines, with unobstructed surrounding roads. Avoid locations downwind of pollution sources and areas prone to water accumulation.
2. Foundation Fixing
Flat and Stable Ground: Select a flat and stable ground as the installation foundation to ensure it can bear the weight of the generator. Use a spirit level to measure the levelness during installation and fix the unit on a horizontal foundation.
Shockproof Measures: Special shockproof pads or anchor bolts should be installed between the unit and the foundation to reduce vibration.
3. Pipeline Connection
Exhaust Pipe: For indoor use, the exhaust pipe must be led outdoors. The pipe diameter must be ≥ the diameter of the muffler's exhaust port, and the number of elbows in the connected pipeline should not exceed 3. The pipe should be inclined downward by 5-10 degrees to prevent rainwater from entering; if the exhaust pipe is installed vertically upward, a rain cover must be added.
Fuel Pipe: When connecting the corresponding fuel pipes, ensure the connections are tight with no leakage.
4. Electrical Connection
Reliable Grounding: The unit shell must have reliable protective grounding. For generators requiring direct neutral point grounding, the neutral grounding must be performed by professionals with lightning protection devices installed. It is strictly prohibited to use the municipal power grounding device for direct neutral point grounding.
Correct Wiring: Connect the power lines correctly according to the generator's electrical wiring diagram to ensure tight and error-free connections. The grounding wire connection point is generally at the end of the generator chassis and must be connected to a proper grounding location.
Reliable Two-way Switch: The two-way switch between the generator and the municipal power supply must be highly reliable to prevent reverse power transmission. The wiring reliability of the two-way switch must be inspected and approved by the local power supply department.
5. Installation Operation Specifications
Follow the Manual: Before installation, carefully read the generator's operation manual to understand its performance parameters, installation requirements and maintenance methods, and operate strictly in accordance with the manual.
Professional Operation: It is recommended that the installation be carried out by professional personnel with relevant experience and skills to ensure the professionalism and safety of the installation process.
References:From the search results, multiple websites such as Shandong Yibo Power Equipment Co., Ltd., Wanshifu, and Shaanxi Times Intelligent Power Technology Co., Ltd. have similar content regarding the installation precautions for Weichai generators. This content has similarities with the text provided by the user in terms of the selection of the installation environment, installation steps, precautions, etc., but there is no direct evidence indicating that the text provided by the user is sourced from a specific one of the above websites.

