1-211-21THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)THDC / THDCP - 954 / 955 / 974 (Rev. 06/03)
PPrroobblleem m CCaauusse e CCoorrrreeccttiioonn
27.27. EnginEngine wile will notl not
reach rated speedreach rated speed
(rpm)(rpm)
1. 1. ElectroniElectronic fc fault cault codes arodes are acte active.ive.
2. 2. EnginEngine powee power outpr output is ut is lowlow..
3. 3. Fuel Fuel grade igrade is not cs not corrorrect oect or fuelr fuel
quality is poor.quality is poor.
4. 4. Fuel Fuel suction suction line line is ris restricestricted.ted.
5. 5. OverOverhead adjhead adjustmustments arents are incoe incor-r-
rect.rect.
1. 1. ReRefer fer to to thetheQSM11 Fault CodeQSM11 Fault Code
InformationInformationchart in this section.chart in this section.
2. 2. RefRefer to Prer to Problem oblem 18. of t18. of this this trou-rou-
bleshooting chart.bleshooting chart.
3. 3. RefRefer to Coer to Correrrectiction 1. of Pron 1. of Probleoblemm
17. of this troubleshooting chart.17. of this troubleshooting chart.
4. 4. ChecCheck fuel ink fuel inlet folet for restr restricrictiontion..
5. 5. MeasMeasure anure and adjusd adjust the ovt the overheerheadad
settingssettings. . Refer to tRefer to the Cummhe Cumminsins
Engine Operation and Mainte-Engine Operation and Mainte-
nance Manual.nance Manual.
6. 6. ContContact a Cact a Cummummins Ains Authoruthorizedized
repair facility.repair facility.
28.28. EnginEngine wile will notl not
shut offshut off
1. 1. Ignition Ignition switswitch cich circuit rcuit is mis malfunc-alfunc-
tioning.tioning.
2. 2. EnginEngine is re is runniunning on fumng on fumes dres drawnawn
into air intake.into air intake.
1. 1. Check Check ignition ignition key skey switch witch circcircuit.uit.
NOTE:NOTE: Should an electrical mal-Should an electrical mal-
function prevent engine shutdown,function prevent engine shutdown,
turn the master disconnect switchturn the master disconnect switch
off.off.
2. 2. LocaLocate and ite and isolsolate the sate the sourcource ofe of
fumes.fumes.
29.29. Fuel consumFuel consumptioptionn
excessiveexcessive
1. 1. Oil Oil levelevel il is tos too hio high.gh.
2. 2. Intake Intake air rair restricestriction is tion is excessiexcessive.ve.
3. 3. FueFuel l lealeaksks..
1. 1. ChecCheck oil k oil dipsdipstictick and oik and oil panl pan
capacitycapacity. . Adjust to thAdjust to the proper oile proper oil
level.level.
2. 2. VisualVisually insly inspect air pect air filter filter and restrand restric-ic-
tion indicatortion indicator. . Replace air fiReplace air filter iflter if
necessary.necessary.
3. 3. VisVisuallually checy check fuel sk fuel systystem andem and
supply for leaks.supply for leaks.
4. 4. ContContact a Cact a Cummummins Ains Authoruthorizedized
Repair Facility.Repair Facility.
30.30. Fuel iFuel in coolan coolantnt
1. 1. Bulk Bulk coolcoolant ant suppsupply ly contcontamiaminatednated. . 1. 1. ChecCheck k coolcoolant ant suppsupplyly. . DraDrain in coolcool--
ant and replace with non-contami-ant and replace with non-contami-
nated coonated coolant. lant. Replace Replace coolantcoolant
filter.filter.
2. 2. ContContact a Cact a Cummummins Ains Authoruthorizedized
Repair Facility.Repair Facility.
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