Home » Cummins 4BT » Cummins 4BT – Low Pressure Fuel Line Replacement – Bosch P7100 Fuel Injection Pump

Cummins 4BT – Low Pressure Fuel Line Replacement – Bosch P7100 Fuel Injection Pump

14 mm, 20 mm
Remove the fuel line from the piston style fuel transfer pump.

12 mm
Remove the fuel drain manifold line at the filter head.

17 mm
Remove the fuel line from the filter head.

17 mm, 12 mm, 14 mm, 20 mm
When replacing fuel lines, replace banjo sealing wash­ers (1) each tim e they are removed.
Install the fuel line in the reverse order of removal.

10 mm, 17 mm
Bleed the fuel line by opening the banjo bleed screw.

10 mm, 17 mm
Operate the priming button on the fuel transfer pump until the fuel flowing from the fitting is free of air.
Tighten the bleed screw.