Service Manual

Fuel Inlet Restriction ISB, ISBe and QSB (Common Rail [...]
Page 6-52 Section 6 - Injectors and Fuel Lines - Group 06
To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com
Setup
NOTE: If quick-disconnect fittings have a white tang, push
the white tang in to release the line.
Disconnect the fuel line from the electronic control module
(ECM) cooler exit port.
Install a fuel pressure gauge adapter, Part Number
3164044, between the cooling plate and the inlet to the
gear pump.
Install a vacuum gauge that has a range of at least 0 to
508.0 mm-Hg [0 to 20 in-Hg].
Remove the banjo bolt on the inlet to the lift pump.
Install an M12 x 1/8 inch NPT banjo bolt, Part Number
4918413.
Install a vacuum gauge into the back of this banjo bolt.