Ce-niehoff-co C701etc/C703etc Alternator Retrofit/Upgrade Instal Manual de usuario descargar pdf (Pagina 2)

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C. E. Niehoff & Co. • 2021 Lee Street • Evanston, IL 60202 Tech Services Hotline 800-643-4633

CAUTION

9. Replacealternatordrivebeltifdamagedorworn.

Installalternatordrivebeltandsecurebelttension

bracketassembly.Loopalternatordrivebeltover

pulleysandalignbeltwithpolyveegrooves.

  Makesurepulleyratiowillnotoverspeed

 alternator.

10. Belttensionguidelinesshownbelowareastarting

pointformanualandautomaticbelttensioners.

• K-sectionpulley:8groovesminimum,10grooves

 preferred.

 • Beltwrap:180degreenominal.Lesswrap

 requiresapulleywithmoregroovesandmore

 belttension.

 • Belttension:80lbsto120lbsnominal.More

 pulleygroovespermitlowerbelttension.

 Forfurtherquestions,pleasecontactdrivebelt

manufacturer.

     Bothtoolowandtoohighbelttension

    causesprematurebearingfailure.Too

    lowbelttensioncausesbeltslip,pulley

    heating,bearingheating,andultimately

    bearingfailure.Toohighbelttension

    increasesbearingfatigue,resultingin

    bearingfailure.

11. Modifyelectricalconnectionstodisableexisting

regulator:

• 50-RDregulator–seeFigure2.DisconnectPOS

 leadatPOSterminalonregulatorandreconnect

 toFLDterminalonregulator.Torque#10-24

 screwto2.3Nm/20lb.in.

CAUTION

Figure2–50-RDRegulatorModication

ReroutethisleadfromPOStoFLD

POS

FLD



NEG

Figure3–50-VRRegulatorModication

Reroutethislead

fromIGNtoFLD(seeNOTEabove)



IGN

BAT

GND

FLD

 • 50-VRregulator(refertoNOTEbelow)–see

 Figure3.DisconnectIGNleadatIGNterminal

 onregulatorandreconnecttoFLDterminalon

 regulator.Torquescrewto1.4–1.7Nm/

 12–15lb.in.

  NOTE:For50-VRregulatorswithDeutschconnec-

 tor,useCENA9-940wiringadaptortojumpfield

 andignitionwires.

CAUTION

12. MakeelectricalconnectionstoCENregulator:

a. Makesurealternator-to-regulatorharnessplugis

 secureinregulatorreceptacle.

 b. ConnectFLDleadfromexistingregulatortoIGN

 terminalonregulator,usingproperringterminal.

 Torque#10-24terminalnutto3.4Nm/30lb.in.

 TorqueM5terminalnutto4.5Nm/40lb.in.

 c. ConnectPterminaltotachometerorrelaylead

 fromvehicle.PterminaltapsACvoltage,typically

 halfthechargevoltage.Useproperringterminal.

 Torque1/4-20terminalnutto3.4Nm/30lb.in.

 TorqueM6terminalnutto4.5Nm/40lb.in.

 d. D+terminalprovides28VDCsensevoltageto

 multiplexcontroller.WhenconnectingD+

 terminaltocontrollerthrougharelay,therelay

 coilmustbediodeprotectedandratedforproper

 voltage.Useproperringterminal.Torque1/4-20

 terminalnutto3.4Nm/30lb.in.TorqueM6

 terminalnutto4.5Nm/40lb.in.

13. Alternatorelectricalconnections:

a. Replacebatterypositivecableifdamagedorworn.

 Connectbatterypositivecablefromvehicleto

 alternatorB+terminal.TorqueB+terminalon

 alternatorto30Nm/22lb.ft.Torquecableclamp

 hardwareto10Nm/90lb.in.

    B+cablemustbesupportedbycable

    clampwithin12’’ofB+outputtermi-

    naltoavoidprematurefailureofB+

    outputterminal.CENrecommends

    usingcableclampattachedto

    alternatoranti-driveendhousing

    forsupport.

 b. Replacegroundcableifdamagedorworn.

 Connectgroundcablefromvehicletoalternator

 B–terminal.TorqueB–terminalonalternator

 to15Nm/11lb.ft.

14. Alternatoroutputtest(conduct test with fully charged

batteries):

a. Turnon28-voltbatterysystemandstartengine.

 b. Turnonallvehicleloads,includinginterior/exte-

 riorlightsandairconditioning.

 c. Measurevoltageatalternator.Voltagereading

 shouldbe27.6–28.0Vonlowsettingofregula-

 torand28.5–29.0Vonhighsetting.SeeCEN

 TroubleshootingGuidesforfurtherinformation.

 d. Checkbatterycablevoltagedrop.Thereshouldbe

 nomorethan0.4Vdropon each legfromalter-

 natortobattery.

 e. Roadtestvehicleforabout20minutes.

 f. Followingroadtest,repeatoutputtest.

Regulatorsusedwiththesealternatorsfeature

  overvoltagecutout(OVCO),whichdisables

  alternatoroutputinanovervoltagecondition.

  RestartingengineresetsOVCOcircuit.When

  anovervoltageconditionisnolongerpresent,

  alternatorandregulatorshouldoperate

  normally.Shouldano-outputconditionoccur,

  followaboveresetproceduretodetermineif

  OVCOtripisthecause.

WARNING

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