Boosted_Nelson_Inc.
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- La Porte, IN
On thursday my brother and I ran up Sparta, WI to pick up our newest acquisition, a 1980 (GL said it was a '77) AM General M916. All the fluid were full, including a nearly full tank of diesel
. But the truck had no power, and when the GL rep tried to jump it from a HMMWV, it still didn't have enough juice. So the GL rep turned off the fuel control selenoid, and jumped the starter selenoid and it fired right up. At first the voltmeter read no voltage, but by the time we left the lot it read 13 volts at idle. Cruising down the highway it read just over 16 volts, but everything was working perfectly.
The truck made the 350 mile drive back to Indiana without any problems. So we decided it should be able to handle a 12 mile drive into town for the Great Lakes Museum of Military History's vehicle show. The first indication something was wrong was that the jake brake stopped working, and then about a block from the museum all the lights went out. So after poking around a bit we discovered that some of the wiring on the alternator decided to fry itself. All of the batteries had read around 12 volts in the morning, but when we checked again the front 2 were around 12 and the rear 2 were closer to 6 volts.
So I guess the question is, should I assume that since the voltmeter had been reading high, that the alternator probably needs to be rebuilt, or hopefully it was just a wiring issue that can be fixed?
The first 3 pics are the fried wiring, the next 2 show the suprisingly clean alternator in my 915, and the last is just a pic of the truck.
. But the truck had no power, and when the GL rep tried to jump it from a HMMWV, it still didn't have enough juice. So the GL rep turned off the fuel control selenoid, and jumped the starter selenoid and it fired right up. At first the voltmeter read no voltage, but by the time we left the lot it read 13 volts at idle. Cruising down the highway it read just over 16 volts, but everything was working perfectly.The truck made the 350 mile drive back to Indiana without any problems. So we decided it should be able to handle a 12 mile drive into town for the Great Lakes Museum of Military History's vehicle show. The first indication something was wrong was that the jake brake stopped working, and then about a block from the museum all the lights went out. So after poking around a bit we discovered that some of the wiring on the alternator decided to fry itself. All of the batteries had read around 12 volts in the morning, but when we checked again the front 2 were around 12 and the rear 2 were closer to 6 volts.
So I guess the question is, should I assume that since the voltmeter had been reading high, that the alternator probably needs to be rebuilt, or hopefully it was just a wiring issue that can be fixed?
The first 3 pics are the fried wiring, the next 2 show the suprisingly clean alternator in my 915, and the last is just a pic of the truck.
