The Inside StoryJohn Deere Reman Alternator Comparison

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

Reasons to purchase aJohn Deere Alternator

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.

The Inside Story – John Deere Reman Alternator5

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.

The Inside Story – John Deere Reman Alternator6

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.

The Inside Story – John Deere Reman Alternator7

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.

The Inside Story – John Deere Reman Alternator8

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.

The Inside Story – John Deere Reman Alternator9

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.

The Inside Story – John Deere Reman Alternator10

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.

The Inside Story – John Deere Reman Alternator11

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.

The Inside Story – John Deere Reman Alternator12

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.

The Inside Story – John Deere Reman Alternator13

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.