Toro procore sr54 - Tine Adjustment and Ground Conditions; Aerating Hard Ground Conditions; Using Longer or Larger Tines; Adjusting Tine Angle (SR54, SR54-S, SR70, SR70-S)

HardGround
Ifthegroundistoormtoobtainthedesiredaeration
depth,thecoringheadcangetintoabouncing
rhythm.Thisisduetothehardpanthatthetinesare
attemptingtopenetrate.Correctthisconditionby
usingoneormoreofthefollowingrecommendations:
•Youobtainthebestresultsafterarainorafter
wateringtheturfthepreviousday.
•Reducethenumberoftinesperstomper
arm.Attempttomaintainasymmetricaltine
congurationtoevenlyloadthestomperarms.
•Reduceaeratorpenetration(depthsetting)if
groundishardpacked.Cleanupcores,waterturf,
andaerateagainatadeeperpenetration.
Aeratingsoilbuiltontopofhardsubsoils(i.e.,
sand/soilcapplacedoverrockyground)cancause
undesiredholequality.Thisoccurswhentheaeration
depthisgreaterthanwhatthetinescanpenetrate
throughthesoilcapandthesubsoil.Whenthetines
contacthardsubsoil,theaeratormayliftandcause
thetopoftheholestobecomeelongated.Reducethe
aerationdepthsufcientlytoavoidpenetrationinto
thehardsubsoil.
Longer/LargerTines
25cm(10inches)orMore
Usinglonger/largertinescanleavethefrontorrearof
theholetuftedorslightlydeformed.
•Holequalityforthiscongurationimprovesifyou
reducethecoringheadspeed10to15%from
fulloperatingspeed.ForPTOpoweredaerators,
reducetheenginespeeduntilthePTOspeedis
400to420rpm.
Note:Reducingtheenginespeeddoesnotaffect
theforwardspacing.
•Thepositionofthecamberbracketcanaffect
pushedholes;refertoAdjustingtheTineAngle
(ModelsSR54,SR54-S,SR70andSR70-S)(page
26)orAdjustingtheTineAngle(ModelSR72)
(page27).
MultiRowAdapterHeads
Whenusingmulti-rowadapterheads,reducethe
enginespeeduntilthePTOspeedis400to420rpm.
Note:Reducingtheenginespeeddoesnotaffect
theforwardspacing.
RootZoneLifting
Usingmulti-tineheadsinconjunctionwithlarger
coringtinesorlargediametersolidtinescaninduce
signicantstressontherootzoneoftheturf.This
stresscanfracturetherootzoneandcausealifting
actiontotheturf.Ifliftingdamageoccurs,tryoneor
moreofthefollowing:
•Reducetinedensity—removesomeofthetines
•Decreasecoringdepth—in13mm(1/2inch)
increments(suggested)
•Increaseforwardholespacing—change
transmissionofthetractionunituponegear
•Decreasethetinediameter—solidorcoring
AdjustingtheTineAngle
(ModelsSR54,SR54-S,
SR70andSR70-S)
Setthetineangleaccordingtothetinelengthby
usingoneofthe2adjustmentholesinthelinkage
arm.Theseholesarepresetsonly.Whenusing17.8
mm(7inch)to25.4mm(10inch)tines,positionthe
headbumperclosesttotherearofthetinehead.You
mayneedtousetheotherposition—theholefarthest
fromthehead(Figure37)duetovariancesofsoil
conditions.
1.DisengagethePTOandengagetheparking
brake.
2.Shutofftheengineandremovethekeyfrom
ignitionswitch.
3.Releasethespringtensiontothetinehead
(Figure37).
g266002
Figure37
1.Spring
3.Adjustmenthole
2.Bumperbolt
4.Springpinandclip
4.Removethebumperboltandbumperfromthe
linkagearmandreinsertthemintotheother
adjustmenthole(Figure37).
5.Connectthespringtensiontothetinehead.
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