13517588879
BOSCH 13517588879 Pompa Alta Pressione BMW 328i 528i X3 2.0T N20 N26
7588879, 0261520141, 0261520142, 13518604229, 8604229, 13517630644, 7630644Integrated High-Speed Digital Fuel Quantity Control Valve-200 barSpecifiche Tecniche
| Specifica | Valore |
|---|---|
| Tipo di sistema | BMW High Precision Direct Injection (HPI) 200-bar System |
| Pressione di esercizioSpecifica Chiave | |
| Pump Mechanism | Camshaft Multi-Lobe Driven Single-Piston Plunger Pump |
| Mounting Flange Bolt Torque | 13 N·m (115 in-lb) M6 flange bolts |
| FUEL LINE NUT TORQUE | 30 N·m (22 lb-ft) high-pressure rail delivery line union nut |
| Drive Interface | Heat-Treated Hardened Tappet Roller Bucket |
| Inlet Low-Pressure Feed | Quick-Connect Hose Barb with Pressure Dampener (5.0 bar) |
| Manufacturer | Bosch (Tier-1 OEM for BMW AG) |
| Bosch Production Number | 0261520141 / 0261520142 |
Pompa alta pressione abbinata (Gruppo circuito carburante)
Funziona sullo stesso circuito ad alta pressione Common Rail. In caso di bassa pressione rail (P0087), verificare la portata della pompa prima di sostituire gli iniettori.
Istruzioni di montaggio
- [
- {
- "step": 1,
- "title": "Low-Pressure Supply Disconnection & Residual Depressurization",
- "instruction": "Depressurize fuel system using ISTA diagnostic software or by pulling the EKP fuel pump control module fuse. Disconnect negative battery terminal in trunk."
- },
- {
- "step": 2,
- "title": "Engine Acoustic Cover & Vacuum Lines Removal",
- "instruction": "Remove acoustic beauty cover, intake charge pipe brackets, and vacuum reservoir hoses to access the high-pressure pump mounted on the intake side of the cylinder head."
- },
- {
- "step": 3,
- "title": "High-Pressure Steel Rail Line Removal",
- "instruction": "Use a 17mm flare nut wrench with counter-hold on pump hex fitting to loosen high-pressure steel delivery line. Disconnect low-pressure supply line."
- },
- {
- "step": 4,
- "title": "Pump Removal & Roller Tappet Inspection",
- "instruction": "Evenly loosen the two M6 mounting bolts. Extract the pump and inspect the internal roller tappet bucket for surface galling or wear on the camshaft drive lobe."
- },
- {
- "step": 5,
- "title": "New Pump Installation & Torque Sequence",
- "instruction": "Lubricate new Viton O-ring and roller tappet with engine oil. Rotate engine until cam lobe is at lowest point. Torque mounting bolts to 13 N·m (115 in-lb) and high-pressure line nut to 30 N·m (22 lb-ft)."
- }
- ]
Codici Guasto (DTC) e Protocolli Diagnostici
Codici guasto diagnostici (DTC) comuni generati quando questo iniettore common rail presenta usura, problemi ai circuiti o scostamenti:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Protocolli Tecnici di Diagnosi & Assistenza
Procedure d'officina verificate, valori soglia di test e linee guida operative per questo assieme.