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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 230 (Fuel System) >> Fuel Delivery - Diesel >> Pump-High Pressure Fuel >> Installation >> High Pressure Fuel Pump

High Pressure Fuel Pump

WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: High pressure fuel lines deliver diesel fuel under extreme pressure from the injection pump to the fuel injectors. This may be as high as 1600 bar (23,200 psi). use extreme caution when inspecting for high pressure fuel leaks. Fuel under this amount of pressure can penetrate skin causing personal injury or death. Inspect for high pressure fuel leaks with a sheet of cardboard. Wear safety goggles and adequate protective clothing when servicing fuel system.
Fig 1: High Pressure Pump Removal/Installation
GC0039503Courtesy of CHRYSLER LLC
NOTE: Carefully align the high pressure pump gear when installing the high pressure pump into the cylinder head. Do not force the high pressure pump into the cylinder head. Otherwise, damage to the cylinder head, high pressure pump gear, and camshaft can result.
  1. Install high pressure pump to the left cylinder head. Torque mounting bolts to 14 N.m (10 ft. lbs.).
  2. Connect the high pressure pump electrical connectors.
  3. Install fuel lines at pump.
    Fig 2: Fuel Line Pliers
    GC0039504Courtesy of CHRYSLER LLC
  4. Install inlet supply line clamp using Fuel Line Pliers 9539.
  5. Install return line clamp using Fuel Line Pliers 9539.
    CAUTION: Do not crimp or bend fuel line. Inspect sealing cone at line; replace line if compression exists.
  6. Install high pressure fuel line union nut, and tighten to 33 N.m (24 ft.lbs.).
  7. Install high pressure line support bracket.
  8. Install negative battery cable.
  9. Install the engine cover.
  10. Start engine and check for leaks.