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MeasuringClutchCurrentDraw

Note:Donotmeasurecurrentdrawiftheclutchhasshortedtogroundorifthe

resistancemeasurementisoutofspecication.

1.ParkthemachineonalevelsurfaceanddisengagethePTO.Stopthe

engine,waitforallmovingpartstostop,andremovethekey.Engagethe

parkingbrake.

2.Disconnecttheclutchwireconnector.

3.Setthemulti-metertomeasureamps(10ampscale).

4.ConnectthepositivemeterleadtothechassisharnessterminalA.

5.Connectthenegativemeterleadtothecorrespondingclutchterminal.

6.ConnectashortjumperleadfromterminalC(largeredwirewithcap)to

terminalD(largeredwirewithnocap).

7.TurntheignitionswitchtoRUNandthePTOswitchtotheONposition.

8.RecordtheampreadingandrefertothePTOClutchElectricalSpecication

Chart.

Resistance(OHMs)

AMPDraw

ContinuitytoGround

3.05±5%

3.93

OPEN

TVSDiode

TheTVSDiodeprotectstheelectricalsystemfromcurrentsurgescausedby

PTOengagementanddisengagement.

g322161

Figure95

TVSDiodeTesting

Notestingprocedureavailable.Ifthediodeissuspectedtobefaulty,replacethe

diode.Ifthesystemfuseblowseachtimetheclutchisengaged,theTVSdiode

ismorethanlikelyshortingclutchpowertoground.

MagnetoStopRelay

Themagnentostoprelaygroundsthemagnetowhenthekeyisturnedtothe

“OFF”position.Whenthekeyisturnedtothe“RUN”position,thesolenoidis

TitanServiceManual

Page8–11

Electrical:ServiceandRepairs

3438-774RevA

Toro TITAN User Manual

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