Toro procore sr54 - PTO Clutch Adjustment and Fastener Specs; Adjusting the PTO Clutch; Fastener Torque Specifications

g010863
Figure47
ModelsSR54,SR54-S,SR70,andSR70-S
1.Drivechain3.Jamrod
2.Jamnut
g237989
Figure48
ModelSR72
1.Drivechain3.Jamrod
2.Jamnut
Important:Donotovertightenthechains;excess
tighteningofchainscancausegearbox/sprocket
damage.
LubricatingtheDriveChain
Donotlubricatethedrivechainunlessitbecomesstiff
becauseofrust.Ifthechainrusts,lubricateitlightly
withadry-typelubricant.
AdjustingthePTOClutch
ServiceInterval:YearlyBeforeandafterstorage
WARNING
Frictionclutchesmaybecomehotduringuse.
Donottouch.Toavoidtheriskofre,keep
theareaaroundtheclutchfreeofammable
materialandavoidprolongedslippingofthe
clutch.
1.Attheendoftheseason,backoffeachofthe
clutchnuts2turns(Figure49).
g010847
Figure49
1.Clutchnut2.Clutch
2.Atthestartofthenewseason,startthePTO
andallowtheclutchtoslipforafewseconds
beforestoppingthePTO.Turnbackthenutsan
additional2turns.
Note:Donotallowtheclutchtoslipforan
extendedamountoftime.
3.Iftheclutchcontinuestoslipafterturningback
thenuts,tighteneachnutanadditional1/4turn
untiltheslippingceases.Donotovertightenthe
nuts,asshaftdamagemayoccur.
FastenerTorque
Specications
ModelsSR54,
SR54-S,SR70,
andSR70-S
SR72
Crankshaftnut
1288N∙m
(950ft-lb)
1627N∙m
(1200ft-lb)
Crankpinnut
1288N∙m
(950ft-lb)
1288N∙m
(950ft-lb)
Hingebolt359N∙m
(265ft-lb)
407N∙m
(300ft-lb)
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