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Old May 13, 2015 | 11:51 AM
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Alternator

Well today I got an intermittent battery light so I got the batteries tested and they were both good and then the alternator is only pushing 12 volts so I guess I need a new one right? Which know should I get? And how hard is it to get the belt to relieve tension
 
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Old May 13, 2015 | 12:04 PM
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We've had a few good reports on this starter.
starter. It a gear reduction unit with a permanent magnet motor(rebuilt).
Napa #449301 $159.00.

Here is one of several threads discussing options on how to deal with the belt and tensioner.
https://www.ford-trucks.com/forums/1...lternator.html
 
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Old May 13, 2015 | 12:42 PM
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Alternator Options:
https://www.ford-trucks.com/forums/1...ernatives.html

DC Power Alt and Wiring upgrade info:
https://www.ford-trucks.com/forums/1...epair-com.html

Belt tools:
GearWrench 3680 Ratcheting Wrench Serpentine Belt Tool - Combination Wrenches - Amazon.com GearWrench 3680 Ratcheting Wrench Serpentine Belt Tool - Combination Wrenches - Amazon.com

Amazon.com: Wilmar W84010 Serpentine Belt Tool: Home Improvement Amazon.com: Wilmar W84010 Serpentine Belt Tool: Home Improvement


I have the one in the second link, but for the alternator on the 6.0L you can really just lift the belt on and off the alt without messing with anything. Or use a pry-bar to lift the belt up and off like how is shown in Rusty's link above. But if you feel like you need to, either of those tools will help you set the tensioner kickstand (pics below) that keeps the belt slacked while you change out the alt.

Belt routing and tensioner:


Kick stand NOT set (belt tight):


Kick stand SET (belt loose):
 
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Old May 13, 2015 | 12:45 PM
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Sorry, got sidetracked between reading question and posting answer.
 
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Old May 13, 2015 | 02:13 PM
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Originally Posted by Rusty Axlerod
Sorry, got sidetracked between reading question and posting answer.
LOL...I was reading your response and thought....wait a minute....then I had to scroll up to make sure I wasn't losing MY mind!
 
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Old May 13, 2015 | 02:27 PM
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Thanks guys what would be the best one to pick up at a local parts store?
 
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Old May 13, 2015 | 02:33 PM
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Originally Posted by bizzelj
Thanks guys what would be the best one to pick up at a local parts store?
Ask for a NEW (not rebuilt) 140 amp upper alternator for a 2005 dual alternator truck. AutoZone and I think Advance Auto have them.
 
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Old May 13, 2015 | 02:49 PM
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And it's good even though I don't have dual alternator
 
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Old May 13, 2015 | 03:12 PM
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Yes, it's essentially identical to the single "snow plow" package 140A alternator that was an OEM option.
 
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Old May 13, 2015 | 03:37 PM
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Ok thanks everyone I will look around tomorrow. See what I can find and give an update
 
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Old May 13, 2015 | 04:57 PM
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I just got a 140 amp new alternator from oreillys. 179.99 plus tax and $10 core.
 
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Old May 13, 2015 | 05:17 PM
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Originally Posted by Magnolia Tom
I just got a 140 amp new alternator from oreillys. 179.99 plus tax and $10 core.
thanks i am going to check them out tomorrow after work.
 
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Old May 13, 2015 | 05:24 PM
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Originally Posted by Magnolia Tom
I just got a 140 amp new alternator from oreillys. 179.99 plus tax and $10 core.
Search for 'alternator' - 2005 Ford F-250 Super Duty | O'Reilly Auto Parts

is it one of these?
 
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Old May 13, 2015 | 05:25 PM
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If you live near a rebuilder, a repair can be a good option also. Save a few bucks and what you do spend is local. A 3G alternator is larger and can make more power. With a simple adapter harness they bolt in and are a higher power option for possibly less money. I put a 180amp 3G in my truck for $170 (IIRC). I bought it from a local rebuilder, all new parts including undersized pully to help it make better power at idle.

 
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Old May 13, 2015 | 05:45 PM
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I put this one on. CARQUEST or ToughOne Alternator - New - 140 Amps 8478AN: Advance Auto Parts
Pay online and use code TRT30 and get it for under $160 at Advance auto
 
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