Belts Failure Book Final CE8149

7/30/2019 Belts Failure Book Final CE8149

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V-Belt trouBleshooting and Failure analysis guide

Simplicity Snapper Massey Ferguson Agco Agco Allis Duetz-Allis Allis Chalmers Murray Brut

For Briggs & Stratton Discount Parts Call 606-678-9623 or 606-561-498

www.mymowerparts.com


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JoesSmallEngine& RepairShop

1234 MainSt.

Anytown, USA000000(000)000-0000

M-F: 8:00am- 7:00 pmSat.: 10:00 am- 5:00 pm

Presentthis coupon toreceivespecial offer. ExpiresXX/XX/XX

Presentthis coupon toreceivespecial offer. ExpiresXX/XX/XX

Mr.John Smith333 N.Third StreetAny Town, WI 55535

2006 Briggs& StrattonCorp.

Maintain the Tradition

BRIGGS & STRATTON Generation to Generation

Briggs& Strattonhas beenprovidingoutdoor powerequipmentengines

forthelast80 yearsandwillcontinuetoforgenerationstocome.

See the backfor Maintenance Coupons andSpecials.

Your Store Info

Your Customized Coupons

Your Target

Audience

Learn more about Dealer Promotions and CustomMarketing Materials on the Power Channel.

Custom marketing BeneFits

Briggs & Stratton Dealer Promotions offerCustom Marketing materials as an easy and

affordable way to promote your business.

These materials include:

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Contact your Briggs & Stratton Distributor or call 1-877-249-6647 to enrollin the program and set yourself up to increase sales in 2009!

dealer Custom marketing


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1

This belt failure guide is designed to assist in inspecting failed belts and understanding the possible causeof the belt failure.

By having an understanding of the cause and effect relationship of belt failures, ensures an accurate andtime effective repair.

Most belts will operate for years with trouble-free performance. Assisting customers in determining thecause of a belt failure will result in increased customer confidence in the dealership and the product.

Use only genuine Briggs & Stratton Power Products Group belts specifically manufactured for use onSmplc, Sappe, Ma, Be, Masse Fegs, Agc, Agc Alls, Dez-Alls ad

Alls Chalmes Law ad Gade Epme.

HiGH quALity, LonG LiFE BELtS

Each is designed, engineered and tested to assure extended trouble-free performance.

Bggs & Sa Pwe Pdcs Gp ses hgh al bels f he fllwg eass:

Resistsoil,dirtandtemperatureextremes

Lastsuptofourtimeslongerthanautomotivebelts

Lowercostperhourofoperation

Maintenancefreeandrequiresnolubrication

Coversawiderangeofhorsepower

Veryruggedandwillprovideyearsoftrouble-freeperformanceevenunderthemostadverseconditions

Smoothstartingandoperation

MostareconstructedwithAramidcords

V-BELt trouBLESHootinG AnD FAiLurE AnALySiS GuiDE


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toP 10 StEPS For CHECkinG V-BELt iSSuES

1. Checkforcorrectbladesandbalancing.

2. Checkalldeckpulleysforwearorinconsistencies.

3. Checkthatalldeckpulleysareonthesameplane.

4. Idlersshouldbecheckedforproperangleoriftheyareoutofplane.

5. Idler arm should be free to rotate and maintain correct belt tension.

6. Makesurethebeltinstalledisthecorrectlength,partnumber,andconstruction,andhas no damage.

7. No objects, such as guides, should touch the belt other than pulleys and idlers.

8. Checkdeckforproperadjustment.Thisincludesproperheight,sidetoside,fronttoback.

9. Inspect belt tension springs for damage or defects.

10. Turnspindlesslowlyandlookforbentshaftsandpulleys,andcheckforbearingwear.

tESt ProCEDurE WitH MACHinE runninG AnD oPErAtor PoSitionED in SEAt

1. Runatfullthrottle,bladesnotrunning.Noticeifthereisexcessivevibrationfromengine.Repairasneeded.

2. Atthrottle,engageblades.Watchforextremebeltmovement.Repeatthisatthrottleand full throttle. (Some movement is normal.)

3. Withbladesrunning,notethevibration.(Thisshouldbecheckedasthethrottleismovedslowlyfromtofull.)Heavyvibrationmayrequiretryinganotherbeltorrecheckpulleysand spindles.



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3


trouBLE ArEA AnD

oBSErVAtion

CAuSE rEMEDy

Sh bel lfe Incorrect part number belt used Replacewiththecorrectoriginalequipmentbelt

relavel apd fale; vsbleeas

Tensil members damaged throughimproper installation or adjustment

Replacewithnewbeltproperlyinstalled or adjusted

Worngroovesinpulley.Checkwithgauge

Replacepulley(s)

Sde walls sf ad sc, lwadhes bewee cve ples,css sec swlle

Oil or grease on belt or pulleys Removeoilandgrease.Replacebelt(s) and clean grooves with clothmoistened with non-toxic, non-flammable degreasing agent orcommercial detergent and water

Sde walls d ad had. Lwadhes bewee cve ples.Bm f bel caced

Hightemperatures Checkforexcessiveslippageorexcessive load

Deea f bbecmpds sed bel

Belt dressing Neverusedressingonv-belts.Cleanwith cloth moistened with non-toxic,non-flammable degreasing agent orcommercial detergent and water.Tighten drive belt properly to preventslippage

Exeme cve wea Belts rub against guard or otherobstruction

Removeobstructionoraligndrivetogive needed clearance

Sp bs bel Belt slip while starting or stallingunder load

Adjust tension as per operator'smanual or replace belt if severelydamaged

Be bels Suddenshockorimpact Be sure shields are in place andremove source of objects contactingdrive pulley or blades

W sde pae

Constantslippage Adjust tension as per operator'smanual or replace belt if severelydamaged

Misalignment of pulleys Checkandadjust

Worn pulleys Install new pulleys

Wrong belt cross section Use correct belt

Exposure to abrasive material Replacewornpartsandbesureproper shields are installed

Bm f bel cacg

Heatbuild-upfromconstantslippagedamaging under cord

Install correct belt, adjust tension asper operator's manual

Belt stored improperly Use recommended storage practice

Belt operating near high heat raisingoperating temperature

Use correct shielding from heatsource.Checkventilationanddebrisbuildup


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trouBLE ArEA AnDoBSErVAtion

CAuSE rEMEDy

Belt turnover pattern Misaligned pulleys Re-alignthedrivesystem

Worn pulley grooves Improper belt tension Adjust tension per OperatorsManual

Tensilememberbrokeninsidebelt through improper installation

or adjustment

Replacewithnewbelt(s)

Incorrectly aligned idler pulley Carefullyalignidler,checkalignment with drive loaded andunloaded

BELt turnoVEr PAttErn


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CAuSE rEMEDy

Belt pulled apart Extremeshockload Removecauseofshockload

Belt came off drive Checkforforeignmaterialinthedrive. Insure proper tension anddrive alignment

BELt PuLLED APArt


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CAuSE rEMEDy

Severe corner and surface wearpattern

Constantslip Adjust drive per OperatorsManual

Misalignment Re-alignpulleys

Worn pulleys Replacewithnewpulleys

Incorrect belt Replacewiththecorrectoriginalequipmentbelt

SEVErE CornEr AnD SurFACE WEAr PAttErnS


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CAuSE rEMEDy

Side worn Misalignment Re-alignpulleys

Worn pulleys Replacewithnewpulleys

Incorrect belt Replacewiththecorrectoriginalequipmentbelt

Worn SiDE PAttErn


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CAuSE rEMEDy

Side and bottom of belt burned Belt slipping while starting orstalling under load

Replacebeltandtensiondriveasper Operator's Manual

Worn pulley Replacewithnewpulleys

BottoM AnD SiDE BurnED


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CAuSE rEMEDy

Bandcoverhasflakedoffandthesidewallsaresoftandsticky

Oil or grease on belts or pulleys Removesourceofoilorgrease.Cleanpulleygrooveswithaclothmoistened with non-flammable,non-toxic degreasing agent orcommercial detergent and water

BAnD SiDEWALL


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CAuSE rEMEDy

Belt cut on bottom Belt came off pulley Checkdrivetensionandalignment-- re-tension and aligndrive properly

Foreign material fell into beltdrivemakingbeltcomeoff

Shielding not in place

Belt forced over the pulley flangeduring installation

Install new belt(s) properly

BELt Cut on BottoM


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CAuSE rEMEDy

Bottomofbeltcracking Belt slipping, causing heat buildupand gradual hardening of undercord

Install new belts. Adjust tensionas per Operator's Manual

Idler pulley improperly installedcausing wear on the wrong side

of the belt

Check Operator's Manual forproper belt routing

Improper storage Avoid extreme heat conditions. Donot bend at extreme angles andlay flat during storage

BAnD SiDEWALL


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Belt Cross Section Chart



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suPPort

PuBliCations

Brs & Stratto Servce Tools CataloPart #MS-8746

Briggs & StrattonOutdoor Clea wth Pressure Washers

Part #195888GS

Briggs & Stratton Master Parts CatalogPart #MS-4185

Brs & Stratto Small Ee Care & Repar BookPart #274041

Brs & Stratto Small Ees Text BookPart #CE8020


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CE8149-1/09

For more educational information contact us at 1-800-934-7730

or e-mail us at [email protected] Printed in the U.S.A.

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BRiggS&STRATTOncORPORATION

cUSTOmeR edUcATIONPO BOX 702mIlwAUkee, wI 53201 USA414 259 5333

copyright 2009. A rights rsrv.

Documents

Belts Failure Book Final CE8149