Cummins Fuel Gear Pump 212605

The Cummins Gear Pump 212605 is an OEM grade fuel delivery component exclusively engineered for QSB6.7 (6.7L, 173320hp) and QSL9 (9L, 250450hp) engines. Designed to ensure stable low pressure fuel supply, it serves critical applications in construction machinery (loaders/excavators), commercial vehicles (heavy trucks/buses), and generator sets. Unlike conventional gear pumps, it delivers 160cc/rev displacement and maintains 1.2MPa continuous pressure, achieving 99.8% filtration efficiency (ISO 16889 10μm standard) across extreme temperatures from 30℃ (Heihe, China) to 50℃ (Middle East), effectively preventing injector failures caused by fuel supply fluctuations (average repair cost: $2,800 per incident).

Part No. : 212605 (REV F, 2025 Plus)

Engine Compatibility : QSB6.7 (2019+), QSL9 (2021+)

Rated Flow : 320 L/h@1,800rpm (QSB6.7) / 480 L/h@1,500rpm (QSL9)

Max Pressure : 1.5 MPa (continuous) / 2.2 MPa (10sec peak)

Volumetric Efficiency : ≥92% (@1.2 MPa)

Dimensions : 185×120×105mm (QSB) / 210×140×120mm (QSL)

Weight : 4.2 kg (QSB) / 5.8 kg (QSL)

Service Life : 8,000hour bench validation (200,000 km equivalent)

Noise Level : 72 dB (QSB) / 75 dB (QSL)

Installation Requirements

1. Alignment: Use Cummins alignment pin (P/N 212607) to ensure ≤0.05mm pump engine shaft coaxiality.

2. Torque sequence: Tighten bolts in two stages – 12N·m initial → 18N·m final (90°±5° angular method).

3. Priming: Manually pref ill 500ml fuel to prevent gear dry run wear.

Maintenance Schedule

500hour intervals: Verify supply pressure (QSB6.7: 0.81.0MPa; QSL9: 1.01.2MPa).

2,000hour intervals: Replace inline filter (P/N 212606) and clean inlet magnet (inspect if iron debris >2g).

Fuel quality: Use Cummins DFS 246 (<10ppm sulfur); trigger alarm if water content exceeds 0.5%.

Critical Note for QSL9 Users

Install fuel preheater (P/N 3982762) in sub 10℃ environments to prevent gear clogging by wax crystals.