Kohler KD440

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DISASSEMBLY/REASSEMBLY
Donotdemountwhenhotorthepartcouldbecomedeformed.
Cylinder head
Ifthesurface ofthecylinderheadisdeformed,atten itbyremoving
0.2mmofmaterialatmost.
Alwaysreplacetheseal.Seegs46-47-48-49-50whenselectingthe
thickness.Theboltsmustbetightenedindifferentphasesfortheva-
riousengines,incompliancewiththeordershowninthegure:
Firsttightenthe4screwsM10,thenthe2sidescrewsM6.
Lubricatetheshanksofthebolts,undertheirheadsandthewashers
withengineoil.Donotusetoomuchoil.Oilthatdepositsinthethre-
adedholeonthecylinderblockcouldbecomepressurizedduringthe
tighteningphase,sensiblydiminishingthedrivingforce.Alwaysmake
surethattheholesonthecylinderblockaredryandclean.
KD 225_315_350_400_440 Workshop Manual_cod. ED0053029330_1° ed_ rev.00
Injector projection
TheendofnozzleAshouldproject2,5mmforKD225-315-350and
3,0÷3,5mmforKD400-440fromthecylinderheadplane.
AdjustwithcoppergasketsBwiththicknessof0.5,1and1.5mm
Engine KD 350
1st phase: tighten all the bolts to a 30 Nm torque value in a
crossed fashion.
2ndphase:unscrewalltheboltsby180°.
3rdphase: tightenall the bolts to a 20 Nm torque value in a
crossedfashion.
4th phase: make a 60° turn in the same order as the 3rd
phase.
5thphase:tightenthe2sidebolts(5)toa10Nmtorquevalue
For KD 400 and 400 engines
1
st
phase:tightenallscrewscrosswiseto20Nm.
2
nd
phase:tightenthescrewsinthesameorderto40Nm.
3
rd
phase:tightenallscrewsinthesameorderto50Nm.
4
th
phase:followingthesameorderasinphase3,rotate60°.
5
th
phase:followingthesameorderasinphase4,rotate60°.
6
th
phase:tightenthe2sidescrews(5)to10Nm
Engine KD 225
1stphase: tighten all the boltsto a30 Nm torquevalue ina
crossedfashion.
2ndphase:unscrewalltheboltsby180°.
3rdphase:tightenall the boltstoa20Nm torque valueina
crossedfashion.
4th phase: make a  52° turn in the same order as the 3rd
phase.
5thphase:tightenthe2sidebolts(5)toa10Nmtorquevalue
.
Engine KD 315
1stphase: tighten all the boltsto a30 Nm torquevalue ina
crossedfashion.
2ndphase:unscrewalltheboltsby180°.
3rdphase:tightenall the boltstoa20Nm torque valueina
crossedfashion.
4th phase: make a 72° turn in the same order as the 3rd
phase.
5thphase:tightenthe2sidebolts(5)toa10Nmtorquevalue
.