Operation and maintenance manual

Fuel Filter (Spin-On Type) QSB4.5 and QSB6.7
Page 5-10 Section 5 - Maintenance Procedures at 500 Hours or 6 Months
Fuel Filter (Spin-On Type)
Remove
Remove the spin-on fuel filter with fuel filter wrench, Part
Number 3398231.
Install
NOTE: Do not pre-fill an on-engine fuel filter.
CAUTION
Do not pre-fill an on-engine fuel filter with fuel. The
system must be primed after the fuel filter is installed.
Pre-filling the fuel filter can result in debris entering
the fuel system and damaging fuel system
components.
Lubricate the o-ring seal with clean lubricating oil.
CAUTION
Mechanical overtightening will distort the threads,
filter element seal, or filter can.
Use the correct fuel filter. See Cummins®/Fleetguard®/
Nelson® filter specifications for the correct part number.
Install the filter on the filter head. Tighten the filter until the
gasket contacts the filter head surface.
Tighten the fuel filter an additional 3/4 turn after contact,
or consult the filter manufacturers instructions.
Prime fuel system after fuel filter installation.