Service Manual

Fuel Lift Pump ISB, ISBe and QSB (Common Rail [...]
Page 5-34 Section 5 - Fuel System - Group 05
To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com
For 24-volt systems with voltage regulators, remove the
voltage regulator from the bottom edge of the ECM by
removing the lower two ECM mounting capscrews. The
relay is fastened to the wiring harness near the ECM
connectors.
Disconnect the voltage regulator wiring harness
connectors and remove the voltage regulator assembly.
Install
NOTE: Make sure the inlet and outlet are properly
oriented with the thin brass outlet section pointing toward
the rear of the engine. Check the lift pump for labeling of
inlet and outlet ports. Verify that the correct pump (12-
VDC or 24-VDC) is installed.
Install the lift pump on the mounting bracket behind the
ECM cooling plate.
Torque Value: 7 N•m [ 62 in-lb ]
WARNING
Fuel is flammable. Keep all cigarettes, flames, pilot
lights, arcing equipment, and switches out of the
work area and areas sharing ventilation to reduce the
possibility of severe personal injury or death when
working on the fuel system.
Install the fuel lift pump inlet and outlet fuel lines.
Torque Value: 24 N•m [ 212 in-lb ]
For 24-volt systems with voltage regulators, install the
voltage regulator at the bottom edge of the ECM and
install the lower two ECM mounting capscrews.
Torque Value: 25 N•m [ 221 in-lb ]
Connect the fuel lift pump and, if equipped, the 24-volt
voltage regulator connector(s) to the wiring harness.