ILMOR 2011 MV8 - Flush Coolers; Replacing the Serpentine Belt

temperaturereaches169F(76C).
•Topoffcoolantreservoirasneeded.
• Checkthecoolantconcentrationlevel(ananti-freezehydrometerisrecommended).
• Checkcoolantlevelafterfirstcompletewarm-upandcooldowncycle.Addi-
tionalcoolantmayneedtobeadded.
Drain heat exchangers of raw water.
• Opencooledsystemswillhaveanoil/transmissionheatexchanger.
 •Removeheatexchangerdrainplugsandallowdraining.
• Closedcooledsystemswillhaveanoil/transmissionandengineheatexchanger.
 •Removeheatexchangerdrainplugsandallowdraining.
• Flushfreshwaterthroughthecoolersfromtherawwaterfittings.Anadapter
maybeneeded.Itisbettertoflushwaterfromoneendofthecoolerandthen
fromtheotherend.Thisshouldflushoutanyforeignparticulates.

NOTE: A properly mounted serpentine belt shouldhavea
smallamountof“play.”Withoutasmallamountofplay,thebeltwillwearoutwell
earlierthanshouldbeexpected.Toomuchplaywillallowthebelttocomeoffthepul-
leysystem.Pressyourthumbagainstthebeltatseverallocationsalongtheserpentine
route.Thebeltshouldgivenomoreorlessthan1/8”to1/4”.Whenthebeltisoff,at-
tentionshouldalsobegiventothequalityofwearofthegroovesontheundersideof
thebeltwhereitmakescontactwiththepulleys.Ifyouareunsureofthewearpattern,
checkagainstanewbelt.Ifthereisanyuncertainty,seekassistancefromyourauthorized
ILMORdealer.Ifthebeltistoolooseandcomesoffortootightandwearsthrough,it
willcausetheelectricalsystemtomalfunction.Thiscouldoccurduringanoutingand
strandtheboaters.Therefore,takethismaintenancefunctionveryseriously.
• Theserpentinebeltislocatedonthefrontoftheengine,exceptinV-drive
 boatswhereitwillbeatthebackduetothemannerinwhichtheengineis
 mountedintheboat.
• Usinga15mmsocketwrench,removetensionfromthebeltbymovingtheten-
sionertoitsmaximumtravelposition.
• Removetheserpentinebeltbyunwrappingitfromeachofthepulleys.
• Checkthewearontheinsidegrooves.Ifthisispartoftheannualmaintenance,
mostlikelytheserpentinebeltwillneedtobereplaced.
• Toinstallanewbeltortoreinstalltheexistingbelt,wrapthebeltaroundthepulleys
asshown,andusea15mmsockettorotatethetensionertoitsmaximumtravel.This
shouldallowenoughslacktoslidethebeltoverthesmooth,waterpumppulley.
• Easethetensionerbackintoplaceandensurethatthebeltisproperlywrapped
aroundallofthepulleys.
• Checkthatthebelthasthepropergive.
 Locate the engine coolant heat exchanger.Itisinstalled
2011 ILMOR MV8 Owner’s Manual • Page 35
Flush Coolers
Replacing the
Serpentine Belt