m6040 voltage regulator

darryljr

New member

Equipment
m6040
Aug 10, 2019
4
0
1
Millarville
my m6040 seems to charge at low rpm but when baling at around 2000 rpm it will not charge the battery. new alternator plus a new battery all connections good. can anyone advise regulator location,
 

Dave_eng

Well-known member
Lifetime Member

Equipment
M7040, Nuffield 465
Oct 6, 2012
5,257
1,043
113
Williamstown Ontario Canada
Regulator is internal to alternator.

The alternator needs to get a trigger signal to turn on. This comes via the key switch and main panel.

Check voltages at 2 pin plug at alternator according to attached procedure.

Check all fuses.

Dave
 

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darryljr

New member

Equipment
m6040
Aug 10, 2019
4
0
1
Millarville
thanks dave i have a manual and have looked at that but i will try again. not sure why at high rpm it doesnt charge, i will check again and get back. it is a oem alternator so it should be okay
 

Tx Jim

Well-known member
Lifetime Member

Equipment
M7040 HDC & JD 4255
Apr 30, 2013
1,244
159
63
Coyote Flats,Texas
Sounds typical for worn/loose alt belt. Have you checked condition & tightness of belt lately?