INSTRUCTIONS

910-82725 Ring and Pinion Set up Tool 9 Inch Ford and 10 Bolt GM Options ©Speedway Motors, Inc. 2017

910-82725RINGANDPINIONSETUPTOOLTOBESTUNDERSTAND-READTHROUGHALLDIRECTIONSBEFOREBEGINNING

9INCHFORDVERSION-

1. Writedownthedimensionthatisstampedoretchedontheendofthepinion.• Ifthereisnodimension,contactthegear-setvendorormanufacturer.

2. ResttheDialIndicatorinthecalibrationfixture.3. AdjusttheDialIndicatorpointerssothatthesmallhandpointsstraightdownto“1”ontheinnerdial(50ontheouter

dial)andthelargehandpointsstraightupto“0”ontheouterdial.• Ifyouweretocomparetheneedlepositionstoaclock,theclockwouldread6o’clock.• Whenreadingthedialindicator,theneedlemovementcounter-clockwisewillindicate1plusthe

thousandths.Aclock-wisemovementwillindicate1lessthethousandths.

• Verifythatthehousingiscleanandfreeofanyburrsorotherirregularitiesthatcanaffectthemeasurements.• Itisbesttohavelightgrease(Vaseline)oroilonallcomponents.

4. Installthepiniongearinthepinionsupporthousing,withacrushsleeveorspacerinstalledandtorquetoproperspecification.• Ashimof.021thousandthsistypicaloftheshimthicknessrequiredforaproperset-up.Youmaywishtostart

withthatamount.5. Determinethecorrectendsizeofthemeasuringtoolslidinglocatorstouseinthecarrierbearingraces.6. Installthecarrierraces(becertainthattheyaresquareinthehousing)andthecapsproperlytorqued.

• Youwillhavetohavethemeasuringtoolinstalledintotheracesbeforeinstallingandtorqueingthecaps.

• Usethespringstoapplypressuretotheslidinglocatorstoholdthemfirmlyinplaceintheraces.

INSTRUCTION

S 910-82725 Ring and Pinion Set up Tool 9 Inch Ford and 10 Bolt GM Options ©Speedway Motors, Inc. 2017

7. PositiontheDogBonetensioningbarandscrewassemblytoaboltorstudthatwilllocatethetensioningscrewoverthepiniongear.

8. PositiontheextendedDogBoneontheendofthepinionandusetheholddownscrewtoholditsnuginplace.9. RotatetheDialIndicatortoachieveaminimumreading.

10. Comparethistothedimensionacquiredfromtheendofthepiniongearthatyouwrotedown.

• Thedifferencebetweenthetwonumbervaluesistheamountyouwillneedtoaddorsubtracttomovethepiniontothecorrectlocation.

• Example;1.029numberonpinionminus1.021readingonthegaugeequals.008additionalshimadded.11. Removeanymeasuringequipmentthatisnecessarytoallowremovalofthepinionandadjusttheshimthicknessof

thepiniongear.12. Reassemblethemeasuringequipmentandcheckthe

piniondepthagaintoensurethatitiscorrect.13. Settheringgearbacklashindicatorinplaceandadjust

thebacklashtothecorrectfactorysetting.14. Applywhitelubeorsimilarmaterialtoseveralteeththe

ringgearandverifythegearcontactpatternonboththedriveandcoastsideofthegear.

• Thevalueofthereadingisactuallyreadcounter-clockwisefromzeroatthetopofthedialindicatorand1inchisaddedtothevaluesincethegaugewassetup1inchfromzeroontheinnerdial.

• Intheexampleattheleftthevaluewouldbereadas.021plusthe1inchwhichequals1.021.

• Anyreadingclockwisefromzeroonthedialwouldbejustthatmanythousandthslessthan1inch.

INSTRUCTION

S 910-82725 Ring and Pinion Set up Tool 9 Inch Ford and 10 Bolt GM Options ©Speedway Motors, Inc. 2017

10 BOLTGMVERSION-1. Writedownthedimensionthatisstampedoretchedontheendofthepinion.

• Ifthereisnodimension,contactthegear-setvendorormanufacturer.2. ResttheDialIndicatorinthecalibrationfixture

3. AdjusttheDialIndicatorpointerssothatthesmallhandpointsstraightdownto“1” on the inner dial (50 on the outer dial) andthelargehandpointsstraightupto“0” on the outer dial.• Ifyouweretocomparetheneedlepositionstoaclock,theclockwouldread6o’clock.• Whenreadingthedialindicator,theneedlemovementcounter-clockwisewillindicate1plusthe

thousandths.Aclock-wisemovementwillindicate1lessthethousandths.• Verifythatthehousingiscleanandfreeofanyburrsorotherirregularitiesthatcanaffectthemeasurements.• Itisbesttohavelightgrease(Vaseline)oroilonallcomponents.• Thenextstepwillrequireinstallingandremovingtheinnerpinionbearingatleastoneextratime.We

recommendthatasetupbearingbeusedinthisprocess.Thiscanbedonewiththeuseofanewbearingthatissandeddownenoughontheinsidetofacilitateinstallingandremovingthebearingwithouttheuseofapressorremovaltool.Oncetheshimthicknessisdetermined,anewbearingthathasaninterference(PressOn)fitmustbeusedforthefinalassembly.

4. InstallthePinionbearinginthehousingandadjustbearingdragtothecorrectspecification.5. Determinethecorrectendsizeofthemeasuringtoolslidinglocatorstouseinthecarrierbearingraces.6. Installthecarrierraces(becertainthattheyaresquareinthehousing)andthecapsproperlytorqued.

7. PositiontheDogBonetensioningbarandscrewassemblytoaboltorstudthatwilllocatethetensioningscrewoverthepiniongear.

8. PositiontheextendedDogBoneontheendofthepinionandusetheholddownscrewtoholditsnuginplaceonthepiniongear.

• Thepiniongearsurfacemustbeaflatsmoothsurface.Gentlyfileanyhighspotsoredges.

• Youwillhavetohavehavetohavethemeasuringtoolinstalledintotheracesbeforeinstallingandtorqueingthecaps.

• Usethespringstoapplypressuretotheslidinglocatorstoholdthemfirmlyinplaceintheraces.

INSTRUCTION

S 910-82725 Ring and Pinion Set up Tool 9 Inch Ford and 10 Bolt GM Options ©Speedway Motors, Inc. 2017

9. Rotatethedialindicatortoachieveaminimumreading.

10. Comparethistothedimensionacquiredfromtheendofthepiniongearthatyouwrotedown.11. Thedifferencebetweenthetwonumbervaluesistheamountyouwillneedtoaddorsubtracttomovethepinionto

thecorrectlocation.• Example;2.472readingonthegaugeminus2.430numberonpinionequals.042additionalshimadded.

12. Removeanymeasuringequipmentthatisnecessarytoallowremovalofthepinionandadjusttheshimthicknessofthepiniongear.

13. Installthepiniongearinthehousing,withacrushsleeveorspacerinstalledandtorquetoproperspecification.14. Reassemblethemeasuringequipmentandcheckthepiniondepthagaintoensurethatitiscorrect.15. Settheringgearbacklashindicatorinplaceandadjustthebacklashtothecorrectfactorysetting.16. Applywhitelubeorsimilarmaterialtoseveralteeththeringgearandverifythegearcontactpatternonboththe

driveandcoastsideofthegear.

• Thevalueofthereadingisactuallyreadcounter-clockwisefromzeroatthetopofthedialindicatorand1inchisaddedtothevaluesincethegaugewassetup1inchfromzeroontheinnerdial.

• Intheexampleattheleftthevaluewouldbereadas1.472plusthe1inchwhichequals2.472.

INSTRUCTION

S 910-82725 Ring and Pinion Set up Tool 9 Inch Ford and 10 Bolt GM Options ©Speedway Motors, Inc. 2017