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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
SM300 ZTR Jumper TSB LAY-TSB-15-002
Date: March 12, 2015 Model: SM300 Product Issue: Laymor has determined that the ZTR module relay is wired to battery power causing a quiescent drain on the battery. Battery drain is expected if unit is left parked for 10-15 days or more. Units affected: SM300 units 35627, 35628 and 35629 Parts kit: Sealed butt/solder splices two required Overview: Units involved in this are to follow the standard Laymor warranty procedure. See Illustrations below for an overview of the scope of the repair. Tools needed: Wire cutters/strippers, crimping pliers Approved SRT:
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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
The Laymor approved standard repair time for this service bulletin is .5 hours.
Instructions: Pullunitintoapprovedlevelworkarea.Turntheengineoffandplaceitinpark.TheprimarygoalofthesereworkinstructionsistochangetheRelaypowersupply,pins30and86,frombatterypowertoignitionpower.
1. FindZTRjumper/relayundertherightsideofthedashpanel.a. YoucanfollowthecableleadingfromtheZTRmodule,mountedto
therightsideofthedashsupportcolumn,totheZTRjumper.2. CarefullynotewherethejumperconnectsintotheSM300electrical
system.a. Attheendofthisprocessthejumperwillneedtobere-installedin
thesamemanner.3. DisconnecttheZTRjumper,picturedbelow,fromrestofunit’selectrical
system.a. Cutthewhitewireinawaywhichisadvantagesforre-splicingduring
reconnection.
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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
b. 4. Removeloomandtapefromjumper.Disconnectrelay.
a.
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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
b. 5. Cuttheredandwhitewiresleadingfromthegreyconnectorasdescribed
andshownbelow.a. Cuttheredwireapproximately1inchfromthesplicealready
present.b. Cutthewhitewireatapproximatelythesamelocation.
6. Cuttheredwirewithringterminalcomingfromthealreadypresentspliceflushtothesplice.
a. 7. Stripthefollowingwires
a. Redandwhitewireswithterminals.
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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
b. Redandwhitewiresextendingfromthegreyconnector.c. Redwireextendingformthealreadypresentsplice.
8. Splicethewhitewire(comingfromthegrayconnector),thewhitewire(withtheterminal),andtheredwire(extendingfromthealreadypresentsplice)together.Splicetheredwire(comingfromthegrayconnector)totheredwire(withtheterminal).
a. Ensurethateachwireissecurelysplicedandthatthespliceisenvironmentallysealedeitherthroughheatshrinkortape.
b. 9. Tapethewirestogetherintoabundleandre-loomthejumper.
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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
a. 10. Re-installtherelayandconnectthejumperbackintothesweeperelectrical
systeminthesamemannerinwhichitwasinstalledpriortoremoval.
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LAYMOR | 401 Capacity Drive; Longview, TX 75604 | PH (800) 458-3238 | FAX (903) 297-7903
REVISIONHISTORY
REVISION DATE DESCRIPTIONOFCHANGE0 03-12-15 NEWPROCEDUREAPPROVALS: DATE:AUTHOR DanalsDunavan 03-12-15ElectricalEngineerNicholasBeardsley03-12-15DirectorofEngineering JimKeough 03-12-15DirectorofQuality BarbaraMcCullough03-12-15