HITACHI
12641740
Vezi specificațiile
SolenoidHitachi High-Pressure Gasoline Direct Injection Pump (GDI HPFP, 150 bar)Euro 56
HITACHI 12641740 Pompă Înaltă Presiune GM Chevy Equinox Buick Regal 2.4L LEA HM10008
Platformă motor:GM 2.4L Ecotec SIDI DOHC 16V (LEA / LAF / LUK) →
COD OE
12608371, 12633423, HM10008, HPP0006, GDP103, 217-3440SUPAPĂ DE COMANDĂ
-DUZĂ PULVERIZATOR
-PRESIUNE ÎN RAMPĂ
150 barNORMĂ POLUAREEuro 5 / Euro 6
GARANȚIE12 Luni
02
Compatibilitate vehicule și motoare
03
Specificații tehnice
| Specificație | Valoare |
|---|---|
| part_number | 12641740 |
| oem_reference | 12641740 |
| manufacturer | HITACHI |
| system_type | High Pressure Fuel Pump |
| pressure_rating | 150 bar (2175 psi) |
| operating_temperature | -40°C to +135°C |
| flange_mount_torque | 15 N-m (11 lb-ft) |
| high_pressure_line_torque | 30 N-m (22 lb-ft) |
| diagnostic_dtc | P0087, P0089, P0172, P0300 |
| Presiune de lucruSpecificație de bază |
04
Instrucțiuni de montaj
- Depressurize the fuel system completely via diagnostic scan tool or by removing the fuel pump fuse prior to line disassembly.
- Clean all surrounding bracket areas thoroughly using residue-free brake cleaner to prevent abrasive particulate ingress.
- Inspect the mechanical camshaft lobe and roller follower or clean injector bore seating surfaces before hardware alignment.
- Install component using fresh factory O-rings or Teflon combustion chamber seals lubricated only with clean motor oil.
- Torque mounting flange fasteners in alternating increments to 15 N-m (11 lb-ft).
- Torque high-pressure hydraulic tube fittings using a calibrated flare nut wrench to 30 N-m (22 lb-ft).
- Prime low-pressure fuel circuit, cycle ignition key 3-4 times, and inspect for high-pressure hydraulic leaks before road test.
Sfaturi și avertismente:
- Always replace single-use high-pressure metal fuel lines and micro-filter seals whenever disconnected.
- Verify camshaft driving lobe surfaces for scoring or flat spots before installing any mechanical pump.
- Reset long-term and short-term fuel trim adaptations via OBD-II diagnostic scanner after physical replacement.
05
Coduri de Eroare (DTC) si Protocoale de Diagnostic
Coduri comune de eroare de diagnosticare (DTC) declansate atunci cand acest injector common rail sufera uzura, defectiuni de circuit sau abateri:
P0087Critical
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
P0201 - P0208High
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.
P0300 / P0301+High
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
P0088High
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
PROTOCOALE DE ATELIER
Protocoale Tehnice de Diagnosticare & Service
Proceduri verificate de atelier, praguri de testare și standarde de intervenție pentru acest ansamblu.
DIAGNOSTICARE COMMON RAIL ÎN ATELIER
Citește protocolul tehnicDiagnostic Pompă Înaltă Presiune: Cod P0087 și Bosch CP4
DIAGNOZĂ COMMON RAIL DE ATELIER
Citește protocolul tehnicDiagnostic Supapă de Dozaj IMV SCV ZME & Test P0088
PROTOCOL DE DIAGNOSTICARE OBD-II
Citește protocolul tehnicGhid de diagnosticare P0087: Presiune scăzută în rampa comună (Rail)
DIAGNOZĂ DE ATELIER COMMON RAIL
Citește protocolul tehnic