CUMMINS QSL9 - Injector Cleaning Methods; Injector Inspection Points; Install Injector; Pre-Installation Data Recording

Install
Donotuseanyabrasives(suchasglassbeading,
sandpaper,emerycloth,Scotch-Brite™pads,etc)
ormetallicitems(includingwirebrushesmadeof
anymetallicmaterial)tocleantheinjectors.Theuse
ofanycleaningmethodotherthansafetysolvent
andasoft,clean,lint-freeclothwilldamagethe
nozzleholesandcauseperformanceissues.
Clean the injector tip and body with safety solvent and a
soft, clean cloth.
Inspect the injector and high-pressure connector o-rings
for damage. Replace, if necessary. Refer to Procedure
006-052 in Section 6.
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qslt4i.html)
Inspect the injector inlet, high-pressure connector tip,
and high-pressure connector inlet for damage.
Check the nozzle holes for any signs of damage, such
as hole erosion or hole plugging.
Spray safety solvent on the injector body and inspect the
fuel inlet passage for small cracks that can allow high-
pressure fuel to leak to the injector drain passage.
Inspect the solenoid terminals for damage.
Record the injector trim codes that are listed on each
injector.
Record the cylinder location where each injector will be
installed.
Page 6 of 11
QuickServe Online | (4022256) QSL9 CM2250 Service Manual
10/3/2018
https://quickserve.cummins.com/qs3/portal/service/manual/en/4022256/