Case IH Magnum 310 - Page 54

Engine-Engineandcrankcase
ConnectingRods
Connectingrodsmustallbethesameweightclassinan
engine.Theweightclassisidentiedbyacolorswatch
ontheconnectingrod.
Therearethreeclassesofcrankshaftbearingdiameters
(boresize)ontheconnectingrod.Theboresizeismarked
byacolorcodeontherod.Theoilclearanceisdeter-
minedbytheconnectingrodboresizeandthecrankshaft
journalsize.Basedonconnectingrodborediameterand
thecrankshaftjournaldiameterabearingsetmustbede-
termined.
Connectingrodsarethefracturesplittype.Caremustbe
takenwhenhandlingtheserodsasanydamagetothe
cap/rodmatingarearequiresthattherodbereplaced.
Connectingrod
weight,classand
color
Borediameterandcolor
designation
85.987-58.996Yellow
85.997-86.005
Green
3450–3470grams
GradeA,Yellow
86.006-86.013Blue
85.987-58.996Yellow
85.997-86.005
Green
3471–3490grams
GradeB,Green
86.006-86.013Blue
85.987-58.996Yellow
85.997-86.005
Green
3491–3510grams
GradeC,Blue
86.006-86.013Blue
RAIL15TR00397CA16
Fracturesplitrodsgivenearlyperfectalignment.Inboth
examplesthered(rod)prolesareidenticalasarethe
blue(cap)proles.Inthetopexampletherodtsperfectly
withthecap.Inthelowerexampletherodisinthesame
positionbutthecapisreversed,herethematerialpeaks
alignpeaktopeakandkeepscapfrommatingwiththe
rod.
RAIL15TR00375AA17
5143149922/02/2018
10.1[10.001]/13