Category Archives: 6.7L Cummins

Install the heater element. Torque Value: 80 N•m [ 59 ft-lb ] Connect the oil heater electrical cord.

Perform a resistance test on the engine lubricating oil heater element. The readings must be a minimum of 91 ohms to a maximum 101 ohms.  

Clean the heater element with a dry, clean towel. Check for cracks in the heating element.  

Disconnect the oil heater electrical cord. Remove the heater element.  

Front Gear Train Install and tighten the fuel rail supply line at the fuel pump and the fuel rail. Torque Value: 40 N•m [ 30 ft-lb] Rear Gear Train Install and tighten the fuel rail supply line at the fuel pump and the fuel rail. Torque Value: 40 N•m [ 30 ft-lb] Install the fuel… Read More »

Inspect the high-pressure fuel rail supply line ferrules for any sign of burrs, or foreign material, rounding, or cracking. Replace if necessary. Check for cracks, wear, or pinched areas. Replace if necessary. Inspect the ends of the high-pressure lines for damaged sealing surfaces. Replace any other damaged component.

Front Gear Train NOTE: A counter-torque must be applied to the fitting on the high-pressure pump. This is to prevent the fitting from being loosened, and to reduce the possibility of a leak. Disconnect the high-pressure fuel rail supply line fitting from the fuel pump and fuel rail. Remove the high-pressure fuel rail supply line.… Read More »

Inspect the high-pressure supply lines for cracks, chafe, leaks, and loose or broken brackets. NOTE: Make sure the fuel line is not rubbing on any other components.  

The fuel rail supply line connects the fuel pump to the fuel rail.  

Inspect and clean the sealing surface between the rail and the fuel pressure relief valve. Install the fuel pressure relief valve and tighten. NOTE: Over-tightening the fuel pressure relief valve can result in a leak. Torque Value: 100 N•m [ 74 ft-lb]