the inside story - john deere · 6 the inside story – john deere reman alternator holding...
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The Inside StoryJohn Deere Reman Alternator Comparison
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The Inside Story – John Deere Reman Alternator2
Why the John Deere Reman Alternator?
• Designed to meet customer demands
• Provide customer a low-cost repair alternative• Competitively Priced, Typically 30%-40% less than new
• All units meet or exceed John Deere original specifications
• Factory backed warranty of 1 year/unlimited hours if dealerinstalled• Covering parts, labor, and collateral damage
• Remanufactured, NOT Rebuilt
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Reasons to purchase aJohn Deere Alternator
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The Inside Story – John Deere Reman Alternator4
Packaging
• John Deere Reman foampackaging fully protects unitduring shipment.
• This extra protection couldpotentially reduce downtime.
• Competitive Alternators arenot packaged correctly tominimize damage inshipping.
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Rectifiers
• John Deere Reman uses newrectifiers 100% of the time inSI (systems integrated)seriesalternators.
• For all John Deere Remanalternators that do notrequire 100% replacement,all rectifiers go through adiode test to ensure form, fitand function.
• Heat from previous use canshorten the life in a rebuiltunit.
• Properly functioningrectifiers reduce leakagecurrent from the batterywhen machine is in storage.
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Holding Strength of Rectifiers
• John Deere Reman units havea high strength Loctite®applied to the inside batteryterminal nut for positive andsecure connection.
• Due to diesel enginevibrations, inside batteryterminal nuts can becomeloose if not properlysecured.
• Ensure unit has Loctite®applied to the B+ terminalfor optimal performance.
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Quality Check
• John Deere Reman alternatorunits have stator leads properlypositioned and soldered intoplace by creating a mechanicaland electrical connection.
• John Deere Reman tests everyalternator to ensure the productmeets OEM specifications beforeshipment from the John DeereReman facility.
• Insufficient wire contact cancause decreased outputcurrent. This can lead to lessthan optimal electricalperformance of the machineand/or mechanical failure.
• John Deere is unsure if otheralternators are put throughthe same performance testsbefore shipping.
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Stator Windings
• John Deere Reman units havethe stators washed andcleaned, then a fresh coat ofvarnish applied to windingsto help protect againstelectrical shorts.
• This increases the life andperformance of the product.
• Dirt buildup restricts the airflow around windings, whichcan cause heat to build thatcan lead to electrical shorts.
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Insulators
• The upmost care is taken inmanufacturing John DeereReman units to ensureinsulators are not melted inthe soldering process.
• John Deere Remanalternators meet or exceedoriginal OEM specifications.
• Having the slip ring wiretouch the pole pieces couldlead to a an electrical shortand creating no output fromthe alternator.
• Ensure insulators are notmelted which could causean electrical short circuit.
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Slip Ring Lead
• John Deere Reman ensuresthat the coil wire wrapsaround the slip ring lead andis properly soldered togetherto the original OEM process.
• Poor electrical connectionscan cause higher resistanceof the rotor which causeslow output.
• The joint can also break,causing loss of all outputfrom the alternator if notproperly soldered.
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Rotor Shaft
• John Deere Reman rotorshafts are polished andgauged for dimensions thatmeet OEM specifications.
• Undersized or worn shaftscan have a loose fit andcause the bearing andpulley to wear outprematurely.
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Thru Bolts
• John Deere Reman alternatorshave proper length thru boltsper application to allow forinstallation of chaff screen ifrequired.
• Chaff Screens keep debris frombuilding up inside the alternator.
• If alternators do not havelong enough through boltsper application, the chaffscreen cannot be installed.
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John Deere Reman Alternator Summary
• Remanufactured, NOT rebuilt
• Completely disassembled
• 100% replacement of worn parts
• Each unit is tested for proper amperage, volts, watts, and RPM’s beforeshipment
• All units meet or exceed original John Deere OEM Specifications
• All John Deere Reman Alternators carry a 1 year/unlimited hour parts andlabor warranty if dealer installed. This includes collateral damage.
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