Case IH Magnum 310 - Page 60

Engine-Engineandcrankcase
Zerothedialindicatoratthispoint.
OnTierIIIandlaterCursor®9engines,rotatetheenginecounterclockwiseuntilthedialindicatorreads5.29mm
(0.21in)±0.05mm(0.002in).ChecktoseeiftheDholeisinthewindowandthatthetimingpinwilllocktheywheel.
IftheDholeisnotcenteredinthewindowandtheywheelcannotbelocked:
1.Loosenthefourboltsthatretainthecamshaftgear.
2.RotatetheywheeluntiltheDholeisinthetimingwindowandtheywheelcanbelocked.
3.Tightenthefourboltsthatholdthecamshaftgeartothecamshaft.
Now,verifythetimingbyturningtheengineclockwise10–20°andthenbackcounterclockwiseuntiltheDholeisin
thetimingwindowandthetimingpinwilllocktheywheel.Verifythereadingonthedialindicatoris5.29mm(0.21in)
±0.05mm(0.002in).
NOTE:Forengineswithoutanenginebrakeengineserialnumbers25342andafter,setbacklashtouse4.70mm
(0.19in).
NOTE:Forengineswithorwithoutanenginebrakepriortoengineserialnumber25342,setbacklashtouse5.29mm
(0.21in).
Repeattheaboveprocedureifnecessarytoobtainthespeciedtiming.Oncetimingiswithinthespeciedrange
tightenthecamshaftgearretainingbolttospeciedtorque.
UltimatelytimingforthecamonaMagnum™TIER4engineis:5.29mm(0.21in)liftonnumber3exhaustrocker
armat54°beforeT opDeadCenter(TDC)1and6,whichistheDholeontheywheel,visiblethroughtheholeinthe
bottomofthebellhousing.
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