V-Belt trouBleshooting and Failure analysis guide & Stratton... · V-Belt trouBleshooting and Failure analysis guide ... V-BELt trouBLESHootinG AnD FAiLurE AnALySiS GuiDE. 2 ... Briggs

V-Belt trouBleshooting and Failure analysis guide

Simplicity® Snapper® Massey Ferguson® Agco® Agco Allis Duetz-Allis Allis Chalmers® Murray® Brute®

Joe’s Small Engine& Repair Shop

1234 Main St.Anytown, USA 000000

(000)000-0000

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

Present this coupon to receive special offer. Expires XX/XX/XX

Present this coupon to receive special offer. Expires XX/XX/XX

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

©2006 Briggs & Stratton Corp.

Maintain the Tradition

BRIGGS & STRATTON Generation to Generation

Briggs & Stratton has been providing outdoor power equipment engines for the last 80 years and will continue to for generations to come.

See the back for Maintenance Coupons and Specials.

Your Store Info

Your Customized Coupons

Your Target Audience

neW For 2009Learn more about Dealer Promotions and Custom Marketing Materials on the Power Channel.

Custom marketing BeneFits

Briggs & Stratton Dealer Promotions offer Custom Marketing materials as an easy and affordable way to promote your business.

These materials include:

• Post Cards

• Sell Sheets

• Hang Tags

• Equipment Repair Forms

• Dealer Labels

• Apparel

• Higher response rates - return on your investment! Mailing lists targeted to your customers produce higher response rates than bulk mail.

• Affordable custom materials

• Options include distribution to customers

• Easy-to-use system

• 24/7 ordering

• Professionally designed and printed

• Completely self-contained solution - You order and we take care of the rest.

• Co-oped by Briggs & Stratton. The pricing shown on post cards, sell sheets and hang tags is 50% of cost. No co-op claims need to be submitted for this program.

We do all the Work, and you gain the Customers!

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

dealer Custom marketing

1

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

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

Most belts will operate for years with trouble-free performance. By assisting customers in determining the cause of a belt failure and resolving the cause of the 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 on Simplicity®, Snapper®, Murray®, Brute™, Massey Ferguson®, Agco®, Agco Allis, Duetz-Allis and Allis Chalmers® Lawn and Garden Equipment.

HiGH quALity, LonG LiFE BELtS

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

Briggs & Stratton Power Products Group uses high quality belts for the following reasons:

•Resistoil,dirtandtemperatureextremes•Lastuptofourtimeslongerthanautomotivebelts•Lowercostperhourofoperation•Cleanoperationandrequirenolubrication•Coverawiderangesofhorsepower•Veryruggedandwillprovideyearsoftrouble-freeperformanceevenunderthemostadverse

conditions•Smoothstartingandoperation•MostareconstructedwithAramidcords

V-BELt trouBLESHootinG AnD FAiLurE AnALySiS GuiDE

2

toP 10 StEPS For CHECkinG V-BELt iSSuES

1. Checkbladesforcorrectbalancingandpartnumber.

2. Alldeckpulleyscheckedforwearorinconsistencies.

3. Alldeckpulleysareonthesameplane.

4. Idlersshouldbecheckedforangleoroutofplane.

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

6. Makesurethebeltinstallediscorrectlength,partnumber,andconstructionand has no damage.

7. No objects should touch belt other than pulleys and idlers.

8. Checkdeckforproperadjustment.Height,sidetoside,fronttoback.

9. Belt tension springs for damage or defect.

10. Spinspindlesslowlyandlookforbentshaftsandpulleys.

tESt ProCEDurE WitH MACHinE runninG AnD oPErAtor PoSitionED in SEAt

1. Runatfullthrottle,bladesnotrunning,noticeifthereisexcessivevibrationfromengine.

2. At¾throttleengageblades,watchforextremebeltmovement.Repeatthisat½throttleand full throttle. (Some movement is normal.)

3. Withbladesrunningnotethevibration,(thisshouldbecheckedasthethrottleismovedslowlyfrom½tofull.)Heavyvibrationmayrequirethatyoutryanotherbeltorrecheckpulleys and spindles


3


trouBLE ArEA AnD oBSErVAtion

CAuSE rEMEDy

Short Belt Life Incorrect part number belt used Replacewithoriginalequipmentpartnumber belt

relatively rapid failure; no visible reason

Tensil members damaged through improper installation or adjustment

Replacewithnewbeltproperlyinstalled or adjusted

Wornsheavegrooves.Checkwithgauge

Replacesheaves

Side walls soft and sticky, low adhesion between cover plies, cross section swollen

Oil or grease on belt or sheaves Removeoilandgrease.Replacebelt(s) and clean groves with cloth moistened with non-toxic, non-flammable degreasing agent or commercial detergent and water

Side walls dry and hard. Low adhesion between cover plies. Bottom of belt cracked

Hightemperatures Checkforexcessiveslippageorexcessive load

Deterioration of rubber compounds used in belt

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

Extreme cover wear Belts rub against guard or other obstruction

Removeobstructionoraligndrivetogive needed clearance

Spin burns on belt Belt slip under starting or stalling under load

Adjusttensionasperoperator'smanual or replace belt if severely damaged

Broken belts Suddenshockorimpact Be sure shields are in place and remove source of objects contacting drive pulley or blades

Worn side pattern

Constantslippage Adjusttensionasperoperator'smanual or replace belt if severely damaged

Misalignment of sheaves Checkandadjust

Worn sheaves Install new sheaves

Wrong belt cross section Use correct part number belt

Exposure to abrasive material Replacewornpartsandbesureproper covers are installed

Bottom of belt cracking

Heatbuild-upfromconstantslipdamaging under cord

Install correct belt, adjust tension as peroperator'smanual

Belt stored improperly Use recommended storage practice

Belt operating near high heat raising operating temperature

Use correct shielding from heat source. Check ventilation and debrisbuildup

4


trouBLE ArEA AnD oBSErVAtion CAuSE rEMEDy

Belt turnover pattern Misaligned sheaves Realignthedrivesystem

Worn sheave grooves Improper belt tension AdjusttensionperOperator’sManual

Tensilememberbrokeninsidebelt through improper installation or adjustment

Replacewithnewbelt(s)

Incorrectly aligned idler pulley Carefullyalignidler,checkalignment with drive loaded and unloaded

BELt turnoVEr PAttErn

5



CAuSE rEMEDy

Belt pulled apart Extremeshockload Removecauseofshockload

Belt came off drive Checkforforeignmaterialindrive.Andinsurepropertensionand drive alignment

BELt PuLLED APArt

6



CAuSE rEMEDy

Severe corner and surface wear pattern

Constantslip AdjustdriveperOperator’sManual

Misalignment Re-alignsheaves

Worn sheaves Replacewithnewsheaves

Incorrect belt Replacewithnewbelt(s)

SEVErE CornEr AnD SurFACE WEAr PAttErnS

7



CAuSE rEMEDy

Side worn Misalignment Realignsheaves

Worn sheaves Replacewithnewsheaves

Incorrect belt Replacewithnewbelt(s)

Worn SiDE PAttErn

8



CAuSE rEMEDy

Side and bottom of belt burned Belt slipping under starting or stalling under load

ReplacebeltandtensiondriveasperOperator'sManual

Worn sheave Replacesheaves

BottoM AnD SiDE BurnED

9



CAuSE rEMEDy

Bandcoverhasflakedoffandthesidessidewallsaresoftandsticky

Oil or grease on belts or sheaves Removesourceofoilorgrease.Cleansheavegrooveswitha cloth moistened with non-flammable, non-toxic degreasing agent or commercial detergent and water

BAnD SiDEWALL

10



CAuSE rEMEDy

Belt cut on bottom Belt came off sheave Checkdrivetensionandalignment--re-tension and align drive properly

Foreign material fell into belt drive makingbeltcomeoff

Shielding not in place

Belt forced over the sheave flange duringinstallationwithoutslackingof the drive

Install newbelt(s) properly, slackoff belt drive

BELt Cut on BottoM

11



CAuSE rEMEDy

Bottomofbeltcracking Belt slipping, causing heat buildup and gradual hardening of under cord

Install new belts. Adjust tensionasperOperator'sManual

Idler pulley on wrong side of belt CheckOperator'sManualforbeltrouting

Improper storage Refertobeltstorage

BAnD SiDEWALL

12

BELT & BLADE — READY REFERENCE — 2007 Edition

TP 900-2222-09-UV-SMBA Appendix D-1

Belt Cross Section Chart


suPPort PuBliCations

Briggs & Stratton Service Tools Catalog Form MS-8746

Briggs & Stratton “Outdoor Cleaning with PRESSURE WASHERS”

Part #195888GS

Briggs & Stratton Master Parts Catalog Form MS-4185

Briggs & Stratton Small Engine Care & Repair BookPart #274041

Briggs & Stratton Small Engines Text BookPart #CE8020

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.

BRIGGSandSTRATTON.com • ThePowerPortal.com

BRiggS&STRATTOncORPORATION

cUSTOmeR edUcATIONPO BOX 702mIlwAUkee, wI 53201 USA414 259 5333copyright ©2009. All rights reserved.

Documents

V-Belt trouBleshooting and Failure analysis guide & Stratton... · V-Belt trouBleshooting and Failure analysis guide ... V-BELt trouBLESHootinG AnD FAiLurE AnALySiS GuiDE. 2 ... Briggs