Mack LEU - Cooling System

36MAINTENANCEANDLUBRICATION
•Afterallfuelhasbeenremovedfromthefuelsystem,opentheltercanister
drain[2]atthebottomofthelterunit.Allowanyaccumulatedwaterandany
remainingfueltodrain.
•Rotatetheltercanister[3]counterclockwisetoreleaseitfromthemounted
lteradapter[1].
•Removetheretainer[4]fromthebottomofthethreadedrod[6]thatholdsthelter
element.Pullstraightdownonthelterelementtoremoveitfromtherod.
•ReplacethecanisterbowlO-ring[7]ifthereareanysignsofdamageor
deterioration.Cleananylterdebrisfromtheadapter,canisterandretainer.
•LubricatetheO-ringverylightlywithcleanengineoilandreinstallitintheadapter
groove.Installthenewlterelementontotherodandhand-tightentheretainer
ontotherodtoholdthelterinplace.
•Reinstallandhand-tightenthecanisteroverthelterelement.
•Closethelterdrain.
•Openthevalvesoneachtanktoallowfueltore-enterthesystem.
•Starttheengineandcheckforleaks.
Note:Avaporcloudorhissingsoundnearthelterindicatesaleak.
CAUTION
UseofanythingotherthangenuineMACK/Cumminsltersmaycausedamage
andvoidtheenginewarranty.
COOLINGSYSTEM
Thecoolingsystemplaysanimportantroleinoverallengineperformanceby
keepingtheenginewithinthenormaloperatingtemperaturerange-hotenoughfor
efcientcombustion,andcoolenoughtopreventenginedamagefromoverheating.
Goodpreventivemaintenancepractices,alongwithmonitoringcoolingsystem
performance,goalongwayinpreventingenginedamagethatcouldresultfrom
coolingsystemproblems.Themaintenanceitemsandtestsoutlinedinthissection
shouldbeperformedattheintervalsspeciedtoensureoptimumperformancefrom
thecoolingsystem.