alternator adjust

[shootiniron]

When adjusting the output of the alternator do you turn the screw head under the allen plug CLOCKWISE or COUNTER CLOCKWISE to increase the output ? Also is it a slot head or philips head ?

 

[doghead]

I use my digital volt meter to set my voltage adjustment. I don't trust the dash gauge to be accurate. I have some trucks that I set with my DVM at 28.5v and the gauges are not reading on the "tic" mark. I rechecked the voltage at the dash gauge and it's 28.5 there also. I read my gauges as a reference only, nothing too precise about them!

 

[atankersdad]

Screwing it in increases the voltage.

 

[nk14zp]

Clockwise to increase voltage.But like DH said use a vom.

 

[Gastrap]

Yes, clockwise to increase.
Mine was putting out 31.5 when the dash gauge was on the mark,now at 28.5 its right on the line between yellow & green.

 

[DavidWymore]

My pot is backwards...I turned it counterclockwise or out initially and got 30+v.

 

[Tow4]

+2 the one on my M929 is counter clockwise to increase voltage also. I think its the same alternator.

 

[DavidWymore]

Mine came from a 900 so makes sense

 

[scboolitcaster]

For future reference, the output voltage adjustment procedure for the alternator is in TM9-2320-361-20 page 4-6