Alternator Woes

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Feb 14, 2015 | 02:16 PM

#16

glennemay

Thread Starter

Tuned

Joined: Feb 2008

Posts: 329

Likes: 1

From: Full time RVer

Quote:

Originally Posted by CPB1

When the load draws more current then the alternator can output then the source becomes the battery. You are monitoring V+ or source voltage. This happen to our trucks during start up and the glow plugs are on, they draw more then the alternator can put out so the source is the batteries until the glow plugs turn off.

DC power makes some high amp alternators for our trucks.

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Mine is a gasser (6.8l), so it only has 1 battery. Think I am going to go for the additional. Need to make up a bracket. Sure as hell not going to spend $400 for a lousy battery mount. lol

Feb 14, 2015 | 03:37 PM

#17

r2millers

Postmaster

Joined: Sep 2010

Posts: 3,472

Likes: 2

From: Southern Cal

I'd also look at your plow connections and wire size. If under rated for this amount of amperage, you're creating way too much heat, which will unnecessarily put more pressure on the battery and alternator to meet its needs.

Feb 14, 2015 | 06:39 PM

#18

CPB1

Fleet Mechanic

Joined: Aug 2012

Posts: 1,760

Likes: 21

Quote:

Originally Posted by glennemay

Mine is a gasser (6.8l), so it only has 1 battery. Think I am going to go for the additional. Need to make up a bracket. Sure as hell not going to spend $400 for a lousy battery mount. lol

Yea I thought that was pricey for what you get, and not sure what the solenoid is for.

I think if it was me I would upgrade the alternator to a high output unit. In your application the demand on the electrical system is high. Just my .02 FWIW.

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