31686560
BOSCH 31686560 Pompe Haute Pression Volvo XC90 XC60 S90 2.0L Drive-E T6
31478796, 31375549, 0261520295, 0261520476Integrated High-Speed Digital Flow Control Valve (FCV)-200 barSpécifications techniques
| Spécification | Valeur |
|---|---|
| Type de système | Bosch HDP5 Mechanical High Pressure Fuel Pump |
| Pression de serviceSpéc. clé | |
| Actuation Type | Exhaust camshaft dedicated pump lobe driving roller tappet |
| Mounting Flange Bolt Torque | 13 N·m (alternating diagonal progressive tightening) |
| High Pressure Pipe Torque | 25 N·m Flare Nut Connection |
| Flow Control Solenoid Resistance | 9.8 - 12.0 Ω at 20°C (ECU digital metering valve) |
| Codes défauts fréquents | P0087 (Fuel Rail Pressure Too Low), P0088 (Rail Pressure Too High), P1193 (Fuel Delivery Error) |
| Workshop Precaution | Lubricate internal roller follower with clean engine oil prior to inserting into cylinder head bore |
Pompe haute pression associée (Ensemble circuit de carburant)
Fonctionne sur le même circuit haute pression Common Rail. En cas de chute de pression (P0087), vérifier le débit de la pompe avant de remplacer les injecteurs.
Conseils de montage
- [
- {
- "step": 1,
- "title": "Depressurize Fuel Rail & Remove Acoustic Cover",
- "instruction": "Depressurize fuel rail via diagnostic scan tool or fuse isolation. Remove upper engine acoustic shroud to access the cylinder head rear."
- },
- {
- "step": 2,
- "title": "Disconnect Fuel Feed Hose & Steel High Pressure Union",
- "instruction": "Detach low pressure quick-release fuel supply hose. Unscrew high pressure steel pipe flare nut (25 N·m) with backup counter-wrench."
- },
- {
- "step": 3,
- "title": "Unbolt Mounting Fasteners & Inspect Roller Lifter",
- "instruction": "Loosen two M6 Torx mounting bolts evenly in half-turn increments to relieve spring tension. Remove pump and inspect camshaft roller tappet for scoring."
- },
- {
- "step": 4,
- "title": "Fit New O-Ring, Torque Bolts Evenly & Check For Leaks",
- "instruction": "Install replacement O-ring with fresh engine oil coating. Torque mounting bolts alternately to 13 N·m. Tighten steel line to 25 N·m. Test run engine."
- }
- ]
Codes de Defaut (DTC) & Protocoles de Diagnostic
Codes de defaut diagnostiques (DTC) courants déclenchés lorsque cet injecteur common rail subit une usure, des pannes de circuit ou une dérive d'étalonnage:
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.
Protocoles Techniques de Diagnostic & Réparation
Procédures d'atelier vérifiées, seuils de test et guides d'intervention pour cet ensemble.