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Alternator Specs

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Bruce Benson:
We have had the alternator in our 2001 Marquis rebuilt twice and the last time the rebuilder removed the tag with the model, serial number and output on it.  It has once again failed, this time at the northern tip of Newfoundland.  Does anyone happen to have the numbers for the alternators used on this year Marquis?

Thanks,
Bruce

Gerald Farris:
This should be all of the information that you need.

Leece-Neville
Product Specifications Spec Value
Item number A0012825LC
Sales number 2825LC
Series number 2500
Notes FOR BATTERY ISOLATED SYSTEMS. HAS SHORTER POSITIVE STUD THAN 2824LC., ISOLATED GROUND, REMOTE EXCITE
Volt 12
Output 160
Mounting style J-180
Dimensions in INCHES
Rotation BI-DIRECTIONAL
Housing coating RAW
UL Approved No
Mounting bolt size 1/2-13 UNC
Positive stud 5/16-18 UNC
Negative stud 5/16-18 UNC
Rectifier location INTERNAL
Shaft diameter .8743-.8753
Excitation type Ignition Excite
Regulator location Integral
Regulator number R240103726

Gerald

Bruce Benson:
Thanks Gerald!

Bruce

Gerald Farris:
The main reason for alternator failure on a motorhome is the use of the alternator to charge dead or discharged house batteries. The alternator charges the chassis and house batteries when the engine is running. If the house batteries are very badly discharged, the alternator will have to produce at maximum amperage for too long and therefore it will overheat and fail prematurely.

If you have been dry camping or have not been charging the house batteries due to restricted shore power, you should start the generator and charge the house batteries with the inverter untill the charge rate drops to the 75 to 90 amp range, depending on the battery bank and inverter that you have.

Gerald  

Joey and Jackie Cashen:
Gerald, do you recommend carrying an extra alternator? If so, where would you purchase? I carry an extra water pump and have considered carrying the alternator. I have a C-12 in my 2001 Marquis.

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