New Holland WORKMASTER 40 - Troubleshooting; Engine - Troubleshooting

8-TROUBLESHOOTING
8-TROUBLESHOOTING###_8_###
SYMPTOM(S)
Engine-Troubleshooting
Problem
PossibleCauseCorrection
Thestartmotordoesnot
rotatewiththekeyswitch
inthe(START)position.
Lowbatterycharge
Chargeorreplace
LoosebatteryorstartercableterminalsTightentheterminal
Keyswitchfaulty
Repairorreplaceswitch
SafetystartswitchnotcompletingcircuitDepressclutchpedalfully
PTOsafetyswitchisnotin"OFF"positionPlacePTOswitchin"OFF"position
Startermotorfaulty
Repairorreplacestartermotor
Thestartmotorrotates
buttheenginedoesnot
start
Lowbatterycharge
Chargeorreplacebattery
Airinfuelsystem
Bleedouttheair
FuelltercloggedCleanorreplacethelter
Fuelshutoffvalveonfuellterinclosed
position
Openthevalve
Fuelshutoffsolenoidonfuelinjectionpump
stuckinoffposition
Checksolenoidforproperoperation,repair
asneeded
Enginespeedisirregular
AirinfuelsystemBleedthefuelsystem
FuelltercloggedCleanorreplacethelter
InjectionnozzlecloggedRepairorreplacenozzle
Fuelleakage
Repairfuelsystem
IrregularfuelinjectionRepairorreplacefuelinjectionpump
Enginespeedismore
thanmaximumratedhigh
idlespeed
Governormalfunction
Repairinjectionpumpasneeded
Enginestopssuddenly
duringoperation
Fuelshortage
Addfuelandbleedairfromfuelsystem
Faultyfuelinjector
Repairorreplaceinjector
Faultyfuelinjectionpump
Repairorreplaceinjectionpump
Internalpartsofengineseizedduetolack
oflubrication
Repairengineasneeded
EnginestopsatlowspeedFaultyinjectionpumpRepairorreplaceinjectionpumpasneeded
EnginevalvegapisnotcorrectAdjustthegap
LowfuelinjectorpressureRepairfuelinjectorasneeded
Engineoverheating
Lackofcoolant
Addcoolantasneeded
FanbeltslippingorbeltisbrokenAdjustbelttensionorreplacebelt
Dirtattachedtotheradiatororprescreen
Cleanradiatornsorscreenasneeded
Thecolorofexhaust
smokeiswhite
LowengineoperatingtemperatureAllowenginetoobtainhigheroperating
temperature
EngineburningengineoilRepairengineasneeded
EnginecoolantenteringengineexhaustRepairengineasneeded
Thecolorofexhaustgas
isblack.
AirltercloggedCleanorreplaceengineairlter
ExcessivefuelsupplyRepairfuelinjectionpumpasneeded
FaultyfuelinjectorRepairorreplacefuelinjector
LowenginepowerFuelinjectornozzlecloggedRepairinjectorasneeded
Carbonaccumulationonvalveseat
Repairvalveandseatsasneeded
IncorrectvalvegapadjustmentAdjustvalvegaptocorrectamount
IncorrectfuelinjectiontimingCheckandadjustfuelinjectiontimingas
needed
LackoffuelsupplyCheckfuelsystemforrestriction
AirltercloggedCleanorreplaceairlter
8-1