Toro 31598N - Belt Maintenance; Servicing the Alternator Belt; Servicing the Compressor Belt; Replacing the Blade-Drive Belts

BeltMaintenance
ServicingtheAlternatorBelt
ServiceInterval:Aftertherst10hours—Checkthe
alternator-belttension.
Every1,000hours—Checkthealternator-belttension.
Refertotheengineowner'smanual(includedwiththe
machine)fortheservicingprocedure.
ServicingtheCompressorBelt
Model31599Only
ServiceInterval:Aftertherst10hours—Checkthe
compressor-belttension.
Every1,000hours—Checkthecompressor-belt
tension.
1.Loosenthecompressor-pivotboltandadjustingbolt
(Figure80).
2.Insertatorquewrenchintothesquareholeinthe
compressorbracket(Figure80).
Figure80
1.Compressorbelt3.Squarehole
2.Mountingbolt4.Pivotbolt
3.Rotatethewrenchuntilyouattainatorqueof37to45
N·m(27to33ft-lb).
4.Tightenthemountingbolts.
ReplacingtheBlade-Drive
Belts
ServiceInterval:Every50hours—Inspecttheblade-drive
belts.
Every1,000hours—Replacetheblade-drivebelts.
Theblade-drivebelt,tensionedbythespring-loadedidler
pulley,isverydurable.However,aftermanyhoursofuse,the
beltwillshowsignsofwear.Signsofawornbeltaresquealing
whenthebeltisrotating;bladesslippingwhencuttinggrass;
frayededges;burnmarks;andcracks.Replacethebeltifany
ofthesesignsoccur.
ReplacingtheFrontMower-DeckBelt
1.Lowerthemowerdecktotheshopoor.
2.Removethebeltcoversfromthetopofthemower
deckandsetthecoversaside.
3.Onthefrontdeck,loosenthejamnutsontheidler
pulleystopscrewandthreadthestopscrewintothe
bracket(Figure81).
Figure81
1.Idlerstopscrew
3.2.5mmto4mm(0.10to
0.16inch)
2.Idlerpulley
4.Usingaratchetwrenchorsimilartool,movetheidler
pulleyawayfromthedrivebelttoreleasethebelt
tensionandallowthebelttobeslippedoffthedeck
pulleys(Figure81).
5.Removetheboltssecuringthehydraulicmotortothe
mowerdeck(Figure82).
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