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SAHCMAN X3000/M3000/F3000 Cummins Starter Solenoid 1337210792
FUNCTION
1. Control of High-Current Switching: Acting as an electromagnetic relay, it utilizes a low-amperage current to control a high-amperage current, thereby engaging the starter motor's main power circuit.
2. Driving Starter Engagement: When the electromagnetic coil is energized, it generates a powerful magnetic force that pulls the internal contacts closed; simultaneously, it drives the starter pinion gear to engage with the engine flywheel ring gear. This action completes the main power circuit, causing the starter motor to rotate at high speed and turn over the engine crankshaft to initiate ignition.
3. Automatic Protection Upon Startup Completion: Once the engine has successfully started, the control current is interrupted, causing the electromagnetic switch to reset and disconnect the main circuit. This prevents the starter motor from continuing to spin at high speed in an unloaded state, thereby safeguarding it against damage.
4. Safety Isolation Function: It enables the control of high-voltage, high-amperage currents using a low-voltage signal, thereby protecting the ignition switch, associated wiring, and-crucially-the safety of the driver during operation.
Working Principle
1. The driver turns the key to the "Start" position → A low-amperage current flows into the solenoid switch coil.
2. The coil generates a magnetic field → The armature is drawn in, pushing the contacts to close and thereby engaging the high-amperage circuit.
3. The starter motor operates → The engine starts.
4. The key is released → The current is cut off, the armature returns to its original position, the circuit disconnects, and the pinion gear automatically disengages.
Advantages
| No. | Performance Advantage Category | Specific Advantage Description |
|---|---|---|
| 1 | Engagement Reliability | Uses high-quality electromagnetic coil and strong magnetic armature, providing strong pulling force and rapid, reliable engagement. Stable starting performance even in low temperature or low voltage conditions. |
| 2 | High Current Carrying Capacity | Main contacts made of high-conductivity copper alloy, resistant to arcing and high temperature. Capable of handling instantaneous currents over 200-500A with stable starting performance. |
| 3 | Starting Protection | Automatically cuts off power after the engine starts, preventing the starter motor from running for a long time and causing damage. Effectively protects the starter, battery, and wiring. |
| 4 | Durability and Environmental Resistance | Good housing sealing, resistant to high temperature, vibration, and corrosion. Suitable for harsh heavy truck conditions (extreme temperatures, humidity, strong vibration) with long service life. |
| 5 | Electrical Safety | Low-current control of high-current design reduces load on the start switch, minimizes wiring heat and short-circuit risks, and improves overall electrical system safety. |
Interfacing Relationships
Located near the engine flywheel housing, the starter motor is mounted on the flywheel housing where the engine connects to the transmission.
The solenoid switch is an integral component of the starter motor, situated directly adjacent to the starter body.
DETAILS
| DESCRIPTION | Starter Solenoid | PART NUMBER | 1337210792 |
| WEIGHT |
0.25KG |
VOLUME | Outer Diameter: 49.7 mm Length: 85 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CLUTCH |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Daily Maintenance Suggestions
| Item | Maintenance Interval | Specific Operations |
|---|---|---|
| Check Starting Performance | Every time before starting | Observe whether the engine starts quickly and strongly. Check for clicking sound without rotation, weak starting, or delayed response. |
| Check Terminal Tightness | Every 5,000 km or monthly | Inspect the battery positive cable, starter main power cable, and control wire for looseness, oxidation, or burning. |
| Inspect Solenoid Appearance | Every 10,000 km | Check the housing for cracks, deformation, overheating marks, or severe rust. |
| Check Battery Voltage and Charge | Every 10,000 km | Ensure battery voltage is normal (≥24V for 24V system) and the battery is sufficiently charged to avoid poor engagement due to low voltage. |
| Overall Starting System Inspection | Every 20,000 km | Check if the starter mounting bolts are loose, wiring insulation is aging, and grounding is good. |
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