My 886 voltmeter used to be in the middle of the dial usually. Then a few weeks ago the needle would only go to the striped part on the left of the meter, the side that says "battery". I have been using it a lot with the cab blower running on purge with no problems. It starts fine and if I put a battery charger on the batteries the charger shows 95%. So would you suspect the alternator, the batteries or the meter? thanks.
- Thread starter farmguy
- Start date
caterpillar guy
Well-known Member
Try blowing the Alternator out with air. They get full of dirt running it it.
Janicholson
Well-known Member
With it running at 3/4 of high idle, the battery should read 14 to 14.4 volts. That is measured across the battery terminal. If 12.6 or so it is not charging. Jim
Brownie450
Member
Probably brushes are worn down. They can be replaced.
Jim
Jim
MARK ROBKE
Well-known Member
While the engine is running,check voltage at the batteries.Then pull the dash and measure the voltage at the back of the gauge. I was a truck mechanic for 40 years,and have seen some IH trucks of that time frame have lower voltage to the dash.Since you are starting fine,this could be your problem.Mark.
Janicholson
Well-known Member
That is it. simple. Jim
notjustair
Well-known Member
I don?t trust the volt meter in my 886. It runs clear at the right far edge of the green but I have checked it with a meter and is running just above 14 volts. It does go down towards the middle with the air conditioning and lights on at a low idle, so I just use it as a general idea and not factual numbers. If it starts after this long it must be the gauge.
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