IndicatorLights
g226805
Figure130
1.Chargeindicator
3.Hightemperaturewarning
2.Glowplugindicator
4.Engineoilpressure
ChargeIndicatorLight
ThechargeindicatorlightshouldcomeonwhenthekeyswitchisintheON
positionwiththeenginenotrunning.Also,itshouldilluminatewithanimproperly
operatingchargingcircuitwhiletheengineisrunning.
EngineOilPressureLight
TheengineoilpressurelightshouldcomeonwhenthekeyswitchisintheON
positionwiththeenginenotrunning.Also,itshouldilluminatewiththeengine
runningiftheengineoilpressuredropstoanunsafelevel.
IMPORTANT
Iftheoilpressureindicatorlightisilluminatedwiththeengine
running,shutofftheengineimmediately.
Totesttheoilpressurelightandcircuitwiring,groundthewireattachedtooil
pressureswitchlocatedontheengineneartheoilîš¿lter.Turnthekeyswitchto
theONposition;theengineoilpressurelightshouldcomeonindicatingcorrect
operationoftheindicatorlightandcircuitwiring.
HighTemperatureWarningLight
Iftheenginecoolanttemperaturereaches105°C(221°F)(approximate),thehigh
temperaturewarninglightshouldcomeon.
Totestthehightemperaturewarninglightandcircuitwiring,turnthekeyswitchto
theONpositionandgroundtheyellowwireattachedtohightemperaturewarning
switchlocatedontheenginewaterpumphousing;refertoHighT emperature
WarningSwitch(page6–52).Theindicatorlightshouldilluminate.
Groundsmaster
®
3280-D/3320
Page6–29
ElectricalSystem:TestingtheElectricalComponents
05138SLRevB
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