13517588879
BOSCH 13517588879 Hogedrukpomp BMW 320i 328i 528i X3 2.0T N20 N26
7588879, 0261520141, 0261520142, 13518604229, 8604229, 13517630644, 7630644Integrated High-Speed Digital Fuel Quantity Control Valve-200 barTechnische specificaties
| Specificatie | Waarde |
|---|---|
| Systeemtype | BMW High Precision Direct Injection (HPI) 200-bar System |
| WerkdrukKernspecificatie | |
| 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 |
Passende hogedrukbrandstofpomp (Brandstofcircuitmontage)
Werkt op hetzelfde hogedruk-common-railcircuit. Controleer bij raildrukverlies (P0087) de pompopbrengst voordat u injectoren vervangt.
Montagetips
- [
- {
- "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)."
- }
- ]
Foutcodes (DTC) & Diagnoseprotocollen
Veelvoorkomende diagnostische foutcodes (DTC's) die optreden wanneer deze common rail-injector slijtage, circuitstoringen of kalibratieafwijkingen vertoont:
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.
Technische Diagnose- & Serviceprotocollen
Geverifieerde werkplaatsprocedures, testdrempels en richtlijnen voor deze component.