Product introduction
Features high reliability, durability, and precise electrical matching characteristics, ensuring stable power supply under heavy-duty conditions. Its compact structure and efficient rectification design effectively support the continuous operation of the engine electronic control system, starter motor, and onboard electronics, making it a standardized and preferred component for OEM maintenance and aftermarket replacement.
Product Images
Product Parameters
| Parameter category | Detailed Description |
| Part number | G5310736 |
| Compatible engine series | Cummins ISB 5.9L,QSB 6.7L |
| Output voltage | 24V DC |
| Rated output current | 70A |
| Maximum output power | 1,680W(24V × 70A) |
| Drive mode | Belt drive (V-shaped or multi-ribbed belt), driven by the front end of the crankshaft |
| Voltage regulator type | External type, independently installed on the generator housing or bracket |
| Speed range | 1,000–6,000 RPM |
| Protection level | IP23 (Resistant to dripping water and solid foreign objects larger than 12.5mm) |
| Operating temperature range | '-40°C to +150°C |
| Compatible engine model |
ISB 5.9L: Medium and heavy-duty trucks, school buses, fire engines QSB 6.7L: City buses, light commercial vehicles, generator sets |
Product Advantages
The G5310736 alternator is specifically designed for deep adaptation of Cummins 4BT, 5.9L (6BT), and 6.7L (QSB) engine series. The electrical parameters of the Cummins 4BT alternator are optimized in tandem with the engine ECU, while the 6.7 Cummins alternator utilizes a bearing structure and sealing technology proven under heavy-duty conditions, capable of withstanding high-frequency vibrations from construction machinery. The 5.9 Cummins alternator integrates optimized airflow and cooling fin design. As a Cummins Genuine Part, it is fully compatible with original equipment manufacturer (OEM) repair manuals, diagnostic tools, and replacement procedures, supporting quick disassembly and trouble-free replacement, reducing after-sales downtime and the risk of incorrect installation.
FAQ
Q: 1.Can the G5310736 alternator be used with non-Cummins 4BT/5.9L/6.7L engines?
A:No. The G5310736 is an original equipment manufacturer (OEM) part specifically designed for deep matching with Cummins 4BT, 5.9L (6BT), and 6.7L (QSB) engines. Its voltage regulation logic, rotor inertia, and ECU communication protocol are optimized for this series. Forcibly adapting it to other brands or models may result in charging abnormalities, electronic control system errors, or battery overcharging and damage.
Q: 2.What is the core function of this part?
A:It primarily provides stable power support for the engine and the vehicle's electrical system, including starting power and power supply for onboard equipment. It also works with the engine's intelligent control module to achieve dynamic voltage regulation.
Q: 3. What should I do if the vehicle experiences unstable charging voltage or a "charging system fault" error on the instrument panel after replacing the G5310736?
A:First, confirm that genuine wiring harnesses and plugs are being used. Non-genuine parts can easily cause signal interference or poor grounding. Second, check if the engine ECU has completed adaptive learning. It is recommended to use the Cummins Diagnostic Tool to perform the "Generator Matching Reset" procedure to avoid false alarms caused by parameter missynchronization.
Q: 4. Can this generator still work reliably in high-altitude or extremely cold regions?
A:Yes. The G5310736 has passed environmental durability testing from -40℃ to +125℃. The internal rectifier module uses a low-temperature start-up compensation circuit, which can maintain rated output even in the Qinghai-Tibet Plateau or Siberian conditions. The bearing sealing structure effectively prevents jamming caused by low-temperature freezing.
Q: 5. Is this generator a dangerous good? Does it require special packaging or labeling during transportation?
A:No, it is not a dangerous good. The G5310736 does not contain lithium batteries, flammable liquids, or magnetic materials, and does not require a UN number or dangerous goods label. It is recommended to use a moisture-proof cardboard box + foam lining + wooden frame for reinforced packaging to prevent internal winding displacement or terminal deformation caused by vibration during transportation.
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