Technical Manual
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Dresser 8750 Walking Dragline MAINTENANCE AND OPERATION
- Table of Contents -
Thismanualisdividedintomajorsectionscoveringthevariousservicable componentsandsystemsofthe7820WalkingDragline.Thesesectionsand theircontentsareorganizedasshownbelow.
INTRODUCTION
Section 1--MACHINESPECIFICATIONS
Section 2--OPERATION
Section 3--LUBRICATION
Section 4--MECHANICALADJUSTMENTS
Section 5COMPRESSEDAIRSYSTEMS
Section 6--ELECTRICALMAINTENANCE
Section 7--ENGINEERINGDATA
Section 8--PREVENTIVEMAINTENANCE
Section 9--OVERHEADCRANES
Section 10--APPENDIX
Introduction
GENERAL INFORMATION
Thismanualisdesignedtoassisttheownerintheoperationandpreventive maintenanceofthismachine.Followingeasytounderstandstep-by-stepprocedures, maintenancepersonnelcanperformthesetasksinasafemanner.Whenasystematic andthoroughmaintenance/serviceprocedure(aresponsibilityofthemaintenance superintendent)isusedforthismachine,minimumunplanneddowntimeandreliable operationwillresult.
THIS MANUAL IS NOT THE PARTS BOOK, andcannotbeusedtoorderparts.A separate,detailedpartsbookhasbeensupplied.Pleasecarefullyreadtheinstructions init.Allpartsarelistedbygroupand/orproductcodenumberswithitem/partnumbers for THIS SPECIFIC MACHINE. Orderpartsinexactquantity.Partsorderedbymistake andreturned,aresubjecttoarehandlingcharge.RIGHTandLEFTHANDPARTSon theupperframecorrespondtotheoperator'shandsatthecontrols;asseatedwhen operatingthemachine.PleasestatethecorrectmachineSERIALNUMBER(locatedon aplateintheoperator'scab)whencorrespondingorcontactingfactoryserviceorparts departments.Recordsoneachmachinearefiledbyserialnumberandwhengiventhis number,yourmachine'sspecificdesignandoriginalequipmentisaccessedquicklyby theDresserpartsrepresentative.
Periodicadditionsorrevisionsmaybemadetothismanual.Thesewillbemaileddirect toyoufromthefactory.Shouldyourequireadditionalinformationorfactoryservice assistancecontactyourregionalservicerepresentativeor
ServiceDepartment
DresserIndustries,Inc.
MarionDivision
617WestCenterStreet
P.O.Box505
Marion,OH43302
or Telephone614/383-5211
Telex24-5307
Telecopier614/383-5211
ItisDresser'spolicytoimproveitsproductswheneverpossibleandpracticaltodoso. Thecompanyreservestherighttomakechangesoraddimprovementsatanytime withoutincurringanyobligationtoinstallsuchchangesonmachinessoldpreviously.
Duetothiscontinuousprogramofproductresearchanddevelopmentsome procedures,specificationsandpartsmaybealteredinaconstantefforttoimprove machines.
SAFETY PRECAUTIONS
Theownerand/oroperatormustreplaceanyandallsafetyandwarningproduct graphicsiftheyaredefacedorremovedfromthemachine.
Beforedoinganyworkonthemachine,aqualifiedelectricianmustlockoutorremove theelectricpowersupplyfromthemachineandtagitsopersonnelareawarethat someoneisworkingonthemachine.
Donotstartanengineindoorsunlessadequateexhaustventilatorsa·reprovided.Orice anengineisrunning,movethemachineoutdoorsassoonaspossible:
Keephands,feet,andclothingawayfromrotatingparts.
Donotmoveoroperatethemachinewithoutknowingthelocationandpurposeofall personnel,plustestorsupportequipment,inornearthemachine:··
Thinkbeforeyouact.Carelessnessisoneluxurytheservicemancannotafford.
Donotwearrings,wristwatchesorloosefittingclothingwhenworkingonmachinery. Theycouldcatchonmovingpartscausingseriousinjury.Neveradjustand/orservice amachineinbarefeet,sandalsorsneakers.
Alwayswearsafetyglasseswhenusingahammer,chisel.orothertoolsthatmay causechipstofly.···
Excessiveorrepeatedskincontactwithsealantsorsolventsmaycauseskinirritation. Incaseofskincontact,removesealantorsolventpromptlybywashingwithsoaparid water.
Neverutilizethemachineairorhydraulicsystemsforsupportwhenworkingonthe machine.Deactivateandisolatethesystempriortoperformingmaintenance.
Equipmentshouldbeparkedonlevelgroundatalltimesduring·machineservicingand periodsofidleness.
Cranesandhoistsmustbeofsufficientcapacitytoliftthehe~viercomponents(gear cases,dipper/bucket,boom,etc.)andhaveanamplesafetvrnargin.
Besureheavyitemsareproperlysupportedfromcranesorhoistsbeforeremoving supportingmembersfrommachine.····
Havesufficientservicepersonnelavailablewhenremovingorinstallinglarge,heavy itemstomaintaincontrolatalltimes.···'
AlwaysusesafetystandsinconjunctionwithhydraulicjacksorhoistsDonotrely_~ thejackorhoisttocarrytheload,theycouldfail.
Usesafetycatchonallhoisthooks.Donottakeachance,theloadcouldslipoffof thehook.
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