Original Fuel Injection Pump Excavator Model QST30 0402796212 2881835 3093635 0402796213 3093636 2881834 3093638

Desc.

Fuel Injection Pump

Part No/TC type

0402796212 0402796213

Brand Name

Man, ABB, PBS, KBB, Napier MET, Weicai, JTH

Other parts

pls contact freely
if you need other P/N

Engine Type

Diesel engine,Gas engine,
Diesel Generators etc.

Spare Type

Cartridge, Nozzle ring , shaft, rotor complete, compressor wheel, diffuser, turbine casing , compressor casing , bearing casing, turbine blades, bearing

Condition:

Original , brand new, OEM, replacement, refurbished

Applicable industry

Marine engines,
Construction works ,oil platform
Energy & Mining etc

Key Word:

Original spare parts
and engine repair tool kits

Trade terms

FOB EXW CIF DDU DDP,

Door to door is available in some countries.

Delivery time:

Most parts are in stock, bulk order based on qty

Payment

T/T, L/C,D/A, Alipay, Western Union, Paypal etc.

Place of origin

China/Germany/South Korea USA/Japan/Sweden /UK/Singapore/Taiwan

Package

Neutral or original packaging

About the product

The QST30 injection pump (fuel injection pump) is a critical component of the high-pressure fuel system in Cummins QSK series diesel engines, commonly paired with high-power engines such as the QSK60. Below is a detailed summary of its key characteristics and technical information:

### 1. Basic Functions
- **High-Pressure Fuel Supply**: Converts low-pressure fuel into high-pressure fuel, which is then injected into the cylinder through the injector with precise timing and accurate quantities.
- **ECU Control**: Modern QST30 pumps are regulated by an Electronic Control Unit (ECU), enabling dynamic adjustment of fuel injection quantity and timing to optimize combustion efficiency.

### 2. Model Description
- The QST30 may represent a derivative model of the Cummins high-pressure injection pump (specific suffixes, such as QST30-XXX, need confirmation). It is widely used in QSK series engines, including models like QSK19, QSK38, and QSK60.
- **Comparable Models**:
- STC Series: Mechanical fuel injection pumps (e.g., STC30).
- HPI High-Pressure Pump: Electronically controlled high-pressure injection systems (e.g., HPI-TP model).

### 3. Key Features
- **Working Pressure**: Capable of achieving pressures up to 30,000 psi (approximately 2,000 bar) or higher, meeting stringent Tier 3/Tier 4 emission standards.
- **Integrated Design**: Incorporates components such as the Fuel Metering Unit (FMU) and pressure regulating valve for enhanced performance and reliability.
- **Compatibility**: Compatible with Cummins common rail systems or unit pump systems, depending on the specific engine model.

### 4. Common Applications
- **Matching Engines**: Primarily used with high-power diesel engines such as QSK60, QSK50, and similar models.
- **Equipment Types**: Widely applied in generator sets, mining machinery, marine power systems, heavy-duty trucks, and other industrial applications requiring reliable high-power performance.

### 5. Maintenance and Faults
#### Typical Issues:
- **Fuel Leakage**: Caused by aging sealing rings or high-pressure fuel pipes.
- **Insufficient Pressure**: Results from plunger wear or solenoid valve malfunctions.
- **ECU Errors**: Triggered by abnormal signals from sensors, such as the fuel pressure sensor.

#### Maintenance Recommendations:
- Regularly replace the fuel filter to prevent impurities from damaging the plunger.
- Use standard low-sulfur diesel fuel to avoid clogging of the fuel injectors.

### 6. Replacement and Matching
- **Original Factory Parts**: It is strongly recommended to purchase replacement parts through authorized Cummins channels to ensure precise model compatibility (e.g., QST30-XXXXX).
- **Alternative Solutions**: If using non-OEM parts, strictly verify pressure parameters, interface dimensions, and ECU communication protocols to maintain system integrity.

### Notes
- For specific technical parameters (such as flow rate or interface size), please provide the complete pump model or engine serial number for accurate reference.
- Non-OEM parts may lead to ECU compatibility issues and affect compliance with emission regulations.