Fuel Injection Pump Assembly
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The genuine Shacman X5000 Fuel Injection Pump Assembly with OEM number 1002250931 is a high-pressure common rail pump designed for WP13, WP15, and ISM engines. This precision assembly delivers fuel at pressures up to 2,500 bar to the injectors, ensuring optimal atomization and combustion efficiency. Manufactured to exact Shacman specifications, 1002250931 features a robust cast iron housing, hardened camshaft, and precision-machined plungers. Every dimension matches the original equipment, guaranteeing direct replacement on X5000 trucks. The pump includes the gear drive coupling, outlet fittings, and mounting hardware. Its internal pressure regulator maintains stable rail pressure across all operating conditions. This assembly is essential for restoring engine power, fuel economy, and emissions compliance after pump failure or during major overhauls.
A worn or failed injection pump causes hard starting, rough idle, loss of power, excessive smoke, and increased fuel consumption. Installing OEM 1002250931 restores proper fuel delivery, protecting the injectors and engine from damage. This pump is calibrated to Shacman’s specific timing and pressure curves, ensuring seamless integration with the engine control unit (ECU).
Each 1002250931 pump is tested on a Bosch or similar calibration bench to verify delivery volume, timing advance, and pressure regulation. Choose genuine Shacman quality for reliable, long-lasting fuel injection performance.
| Parameter | Specification |
|---|---|
| OEM Part Number | 1002250931 |
| Product Name | Fuel Injection Pump Assembly / High-Pressure Pump |
| Brand | Shacman (Genuine OEM) |
| Application | Shacman X5000 – WP13, WP15, ISM engines – common rail fuel system |
| Pump Type | Radial piston, high-pressure common rail (Bosch CP4.2 or equivalent) |
| Max Injection Pressure | 2,500 bar (36,000 PSI) |
| Number of Plungers | 3 (radial arrangement) |
| Camshaft Type | Hardened steel, eccentric lobe |
| Flow Rate @ Rated Speed | ≥ 2,200 cc/min (at 2,000 RPM) |
| Inlet Pressure Range | 0.5 – 2.5 bar (from lift pump) |
| Housing Material | High-strength cast iron / aluminum alloy |
| Drive Type | Gear-driven from engine camshaft |
| Weight (approx.) | 12.5 kg |
| Standards | ISO 9001, IATF 16949, Shacman Q/SC 723 |
The Shacman fuel injection pump assembly 1002250931 is a radial-piston high-pressure pump that generates the extreme pressures required for modern common rail diesel injection. Three hardened steel plungers are driven by an eccentric camshaft, producing a smooth, high-volume fuel flow with minimal pulsation. The pump’s internal pressure regulator (PCV – Pressure Control Valve) modulates the metering valve to maintain rail pressure precisely as demanded by the ECU. Unlike older inline pumps, this design eliminates the need for individual high-pressure lines from pump to injector; instead, fuel is delivered to a common rail that supplies all injectors equally.
The pump housing is precision-machined from high-strength cast iron with integral cooling passages. The camshaft is case-hardened and ground to a mirror finish, riding on needle roller bearings for low friction and long life. The plungers and barrels are matched in sets to ensure consistent delivery across all three pumping elements. The drive coupling (gear or splined hub) is included and matches the engine’s timing gear train. The pump also features a built-in transfer pump (lift pump) section that draws fuel from the tank and delivers it to the high-pressure chamber.
Each 1002250931 pump is calibrated on a Bosch EPS 815 test bench to verify delivery volume at multiple speed and load points. The PCV is electronically tested for response time and flow linearity. The pump is then run-in for 30 minutes to stabilize all moving parts. These rigorous engineering controls ensure that the pump delivers the exact fuel quantity demanded by the ECU, cylinder by cylinder, for optimal combustion and emissions.
The integrated PCV (ZME valve) on the 1002250931 pump regulates inlet fuel flow to the high-pressure elements. It operates at a frequency of up to 200 Hz, allowing the ECU to adjust rail pressure in milliseconds. This enables precise pilot injection, main injection, and post-injection strategies for reduced noise and lower particulate emissions.
The fuel injection pump is the heart of the diesel fuel system. It must supply a precise volume of fuel at exactly the right pressure to the common rail, regardless of engine speed or load. A worn pump causes pressure fluctuations, leading to injector misfires, rough running, increased smoke, and DPF clogging. In severe cases, pump failure can send metal debris downstream, destroying injectors and the entire fuel system. OEM 1002250931 ensures that the pump’s internal clearances and component hardness meet Shacman’s durability standards, preventing such catastrophic failures.
Common rail systems rely on extremely tight tolerances (micron-level) between plungers and barrels. Even minor wear reduces pumping efficiency, forcing the ECU to increase the PCV duty cycle to maintain pressure. This leads to overheating and accelerated wear. The genuine Shacman pump’s plungers are surface-coated with diamond-like carbon (DLC) or similar anti-wear treatment, extending service life beyond 800,000 km. Fleet data shows that using OEM pumps reduces fuel system repairs by 70% compared to rebuilt or aftermarket units.
In engines with SCR and DPF aftertreatment, consistent rail pressure is critical for maintaining the correct exhaust temperature during regeneration. A failing pump that cannot maintain pressure may cause failed regenerations, leading to forced derate and shop visits. The 1002250931 pump’s precise PCV control ensures that the ECU can always achieve the commanded pressure, keeping emissions systems healthy.
Pump wear generates microscopic ferrous particles that circulate through the rail and injectors, causing needle seat erosion and spray pattern degradation. The 1002250931 pump’s hardened components resist wear, minimizing debris generation. The inlet screen and internal filters (serviceable) also trap any particles before they reach the injectors.
Replacing a failed injection pump with OEM 1002250931 requires specialized knowledge and tools. First, ensure the engine is at top dead center (TDC) and the timing marks on the gear train are aligned. Remove the old pump, clean the mounting flange, transfer any necessary components (e.g., gear drive key). Install the new pump with a new gasket and O-rings. Torque mounting bolts to 40-50 Nm. Install the drive gear, ensuring timing marks match. Prime the fuel system by filling the pump inlet with clean diesel and using a hand primer. Start the engine and check for leaks. Use a diagnostic tool to perform a high-pressure system leak test and verify rail pressure control.
This pump assembly is compatible with all Shacman X5000 models equipped with WP13, WP15, or ISM engines from 2015 onward. It directly replaces original part numbers 1002250930 and 1002250932. Applications include the Bosch CP4.2 common rail pump used on Euro V and VI engines. Always verify the OEM marking 1002250931 before installation. Do not attempt to rebuild a failed pump; internal clearances are not field-serviceable.
When replacing the pump, always replace the fuel filter, clean the fuel tank, and flush the low-pressure lines. Contaminated fuel is the #1 cause of pump failure. Keep a spare 1002250931 pump in your parts inventory for emergency repairs.
Monitor fuel rail pressure actual vs. commanded using a scan tool. If the pump cannot achieve commanded pressure at full load, it may be worn. Also check for excessive return flow from the pump (more than 15% of inlet flow indicates internal wear). Perform regular fuel sampling for water and debris. Replace the pump every 800,000 km as preventive maintenance on severe-duty trucks.
Shacman X5000 trucks operate in mining, construction, oilfields, and long-haul freight – environments where the injection pump is exposed to extreme vibration, temperature swings, and fuel quality variations. The 1002250931 pump is tested to withstand 10 million pressure cycles and 5,000 hours of operation on a dynamometer. The cast iron housing resists cracking from thermal shock, and the internal components are protected by a fine mesh inlet screen.
In mining dump trucks, the pump runs continuously at high load in dusty conditions. The hardened camshaft and rollers resist pitting from contaminated fuel. In arctic operations, the pump’s internal clearances are designed to allow for fuel viscosity changes; the PCV and pressure relief valve compensate for thicker fuel at low temperatures. The pump’s bypass valve prevents overpressure during cold starts.
For highway fleets, the pump endures millions of pressure cycles as the driver accelerates and brakes. Its fatigue life exceeds 20,000 hours, making it a reliable component for the life of the engine. The pump’s sealing system prevents external leaks, keeping the engine bay clean and reducing fire risk.
1. Precision calibration: Bench-tested to deliver exact fuel volume per engine map. 2. Superior materials: Hardened plungers, DLC coating, and cast iron housing. 3. Integrated PCV: Fast-response pressure control valve for stable rail pressure. 4. Direct fitment: Includes all necessary seals, gears, and mounting hardware. 5. Full traceability: Serial-numbered with test report.
Aftermarket or remanufactured pumps often use substandard internal components that fail quickly, causing injector damage and downtime. The genuine Shacman pump’s premium components ensure long service life and consistent performance. Investing in 1002250931 prevents fuel system failures, reduces operating costs, and maintains warranty compliance.
For fleet maintenance, standardizing on genuine Shacman pumps simplifies inventory and ensures every technician installs a component that matches the original engine specification. The cost of one failed fuel system due to a bad pump far exceeds the price of OEM.
Using a remanufactured pump that fails after 100,000 km leads to repeat labor, injector replacement, and downtime. The 1002250931 pump’s durability provides a lower total cost of ownership. Its fuel economy (due to precise timing) also reduces operating costs by 2-3%.
Shacman’s fuel injection pump 1002250931 is produced in an IATF 16949 certified facility under strict clean-room conditions. The camshaft, plungers, and barrels are machined on high-precision grinders and assembled by trained technicians. Each pump is tested on a Bosch EPS 815 test bench that simulates engine operation across 20 operating points. The test report includes delivery volume per stroke, PCV current vs. pressure response, and return flow. Only pumps meeting all parameters receive the OEM serial number and are sealed with tamper-evident labels.
Random samples from each batch undergo endurance testing: 1,000 hours at rated speed and pressure, followed by disassembly and wear measurement. Metallurgical analysis confirms hardness and case depth. Salt spray testing (500 hours) verifies external corrosion resistance. The pump is also subjected to thermal shock (-40°C to 120°C cycles) to validate seals and clearances.
This rigorous quality system ensures every 1002250931 pump performs identically to the original factory component. Consistency is critical for maintaining rail pressure stability and emissions compliance across your entire fleet.
Genuine Shacman fuel injection pump 1002250931 is stocked by authorized distributors worldwide. Parts are supplied in heavy-duty foam-lined boxes, with desiccant to prevent corrosion, individually sealed and labeled with OEM part number and serial number. Bulk orders for fleet maintenance depots can be arranged.
Expedited shipping options are available through Shacman’s regional logistics hubs in North America, Europe, Asia, Africa, and the Middle East, with typical delivery within 3-5 business days. Always purchase from certified dealers and verify the holographic authenticity label. Counterfeit pumps may have incorrect timing marks or substandard internal parts, leading to immediate damage.
For preventive maintenance programs, automated replenishment ensures your workshop never runs out of essential injection pumps. Keep a stock of 1002250931 on every service truck to handle emergency fuel system repairs in the field.
The Shacman Fuel Injection Pump Assembly 1002250931 is a precision-engineered high-pressure common rail pump that delivers the exact fuel volume and pressure required for efficient, clean combustion in X5000 engines. Featuring hardened plungers, a cast iron housing, and an integrated pressure control valve, this genuine OEM component ensures reliable performance, lower emissions, and improved fuel economy. By choosing 1002250931, you protect your injectors, prevent costly fuel system failures, and restore engine power. Don’t trust aftermarket or rebuilt pumps – insist on genuine Shacman quality for your fuel injection needs.
