HITACHI
12641740
Özellikleri Gör
SolenoidHitachi High-Pressure Gasoline Direct Injection Pump (GDI HPFP, 150 bar)Euro 56
HITACHI 12641740 Yüksek Basınç Yakıt Pompası GM Chevy Equinox Buick Regal 2.4L LEA HM10008
Motor platformu:GM 2.4L Ecotec SIDI DOHC 16V (LEA / LAF / LUK) →
OEM REFERANSI
12608371, 12633423, HM10008, HPP0006, GDP103, 217-3440KONTROL VALFİ
-ENJEKTÖR MEMESİ
-RAİL BASINCI
150 barEMİSYONEuro 5 / Euro 6
GARANTİ12 Ay
02
Uyumlu Araçlar ve Motorlar
03
Teknik Özellikler
| Özellik | Değer |
|---|---|
| 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 |
| Çalışma BasıncıTemel Değer |
04
Montaj İpuçları
- 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.
Püf Noktaları ve Uyarılar:
- 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
Ariza Kodlari (DTC) ve Teshis Protokolleri
Bu common rail enjektorunde asinma, devre arizasi veya kalibrasyon kaymasi olustugunda tetiklenen yaygin ariza kodlari (DTC):
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.
ATÖLYE PROTOKOLLERİ
Teknik Arıza Teşhis ve Servis Protokolleri
Bu parça grubu için doğrulanmış atölye prosedürleri, test eşik değerleri ve servis talimatları.
ATÖLYE COMMON RAIL ARIZA TEŞHİSİ
Teknik Kılavuzu OkuYüksek Basınç Pompası Arıza Teşhisi: P0087 ve Bosch CP4
COMMON RAIL ATÖLYE ARIZA TEŞHİSİ
Teknik Kılavuzu OkuYakıt Ölçüm Valfi IMV SCV Arıza Teşhisi: P0088 Test
OBD-II TEŞHİS PROTOKOLÜ
Teknik Kılavuzu OkuP0087 Düşük Rail Basıncı Teşhis Kılavuzu
COMMON RAIL SERVİS DİYAGNOSTİĞİ
Teknik Kılavuzu Oku