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FAW DEUTZ ENGINE Electronic Unit Pump Assembly 1111010-K41-K41F SB26010117560F
The unit pump is the core component of a diesel engine's fuel injection system. Each cylinder is equipped with an independent unit pump driven by the engine camshaft; the pump converts low-pressure diesel fuel into fuel at extremely high pressure and delivers it through high-pressure lines to the respective injectors, with injection timing and quantity precisely controlled by the electronic control unit (ECU).
Important Notes on Installation
1. Installation Cleanliness: The unit pump is a precision assembly. During disassembly and installation, strictly prevent dust or grit from entering the pump housing cavity or low-pressure fuel passages; contamination will directly cause the new pump to seize or the fuel injector to clog.
2. Camshaft Alignment: When replacing the unit, inspect the roller drive components for wear. If wear is found on the camshaft lobe tip or if the roller assembly is binding, these issues must be addressed simultaneously.
3. Bleeding the Low-Pressure Fuel System: After installation, use the manual priming pump to thoroughly bleed air from the low-pressure fuel system; failure to do so will make the vehicle extremely difficult to start.
Electronic Unit Pump (EUP) System Maintenance BOM - FAW Deutz Engine
| Item | Part Name | Core OEM Part No. / Spec | Functional Description | Unit | Qty (Based on 6-Cyl. Engine) | Recommended Replacement Reason & Notes |
|---|---|---|---|---|---|---|
| 01 | Electronic Unit Pump (EUP) Assembly | 1111010-K41-K41F (ASIMCO NDB359) |
Core component; pressurizes low-pressure diesel into ultra-high pressure and controls precise fuel injection timing. | Pcs | 1 ~ 6 | Subject to testing results. Can be replaced individually or as a complete set of 6. |
| 02 | EUP Repair Kit (O-Ring / Upper) | Dedicated Fluororubber Ring (Large) | Seals the upper section of the EUP body against the engine block to prevent low-pressure fuel from leaking outward. | Pcs | 6 | Mandatory Replacement. The original ring warps and hardens under high heat; reusing it guarantees fuel leakage. |
| 03 | EUP Repair Kit (O-Ring / Lower) | Dedicated Fluororubber Ring (Small) | Seals the lower section of the EUP; prevents diesel from mixing with engine oil. | Pcs | 6 | Mandatory Replacement. If this seal fails, diesel will dilute the engine oil in the oil pan, leading to severe bearing damage (engine seizure). |
| 04 | High-Pressure Fuel Line | Matches specific truck model diagram | Metal rigid line connecting the top delivery valve of the EUP to the injector in the cylinder head. | Pcs | 1 ~ 6 (As needed) | If the flared sealing surfaces at either end deform after removal, retightening will likely cause fuel weeping under 1,600+ bar pressure. |
| 05 | Low-Pressure Fuel Line Copper Washers | ID 12mm / 14mm Combination Gaskets | Double-sided sealing washers used for the low-pressure fuel inlet and return banjo bolts. | Pcs | 12 ~ 24 | Mandatory Replacement. Copper washers undergo plastic deformation when torqued. Reusing them causes air to enter the fuel line, making the engine hard to start. |
| 06 | Primary Fuel Filter (Water Separator) | Matches vehicle model (e.g., 1105010 series) | Filters large particles, contaminants, and moisture from the diesel fuel. | Pcs | 1 | Highly Recommended. New pumps are extremely sensitive to water and dirt; skipping this filter can lead to the new pump seizing within days. |
| 07 | Secondary Fuel Filter | Matches vehicle model (e.g., 1117010 series) | Filters micron-level fine particles to protect the EUP plunger and barrel assembly from abrasive wear. | Pcs | 1 | Highly Recommended. Replace synchronously with the primary filter to ensure the highest fuel system cleanliness. |
DETAILS
| DESCRIPTION | Electronic Unit Pump Assembly | PART NUMBER | 1111010-K41-K41F SB26010117560F |
| WEIGHT | 2kg | VOLUME | 18.5 cm × 8.0 cm × 6.5 cm |
| 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 | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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