Problem with VR on 2010 john deere

[FredZ]

Hi, My voltage regular is driving me nuts. I have a 2010 John Deere with 12 volt positive ground. I can get it to charge, if I push the points together. They will stay together until I idle the tractor down. The points will then break, but will not go back together when I bring the RPMs up. Can someone help me.
Are there specs. that the points be set at.? What else should I try. ANY help will be very much appreciated. Fred

 

[buickanddeere]

Assuming those are the main cut out contacts that carry armature current to the ammeter and battery?
Dial the spring pressure down . To the point where they open when the engine is shut off but are closed when the engine is above slow idle.

 

[John T]

There are some adjustments on most VR's which may involve slight bending of tabs or adjusting spring pressure so the relay pulls in or unlatches at the correct time, but its hard to describe over the net. The dynamics change on most depending on if the cover is in place or removed. You might insure the VR (and the genny) have a good ground connection, maybe use a jumper wire or what it takes. If she charges fine if you dead ground the gennys FLD post but not otherwise, the problem is the VR or it has a bad ground or loose connections.

John T

 

[JDemaris]

It's a "type A" circuit regulator. Two sets of
points. Has a current regulator and a voltage
regulator. One is the cut-out. Supposed to have an
air-gap of .020" and set to close at 12.8 volts. The
voltage regulator points have an air gap of .075"
and adjusted to make 14 volts.

 

[FredZ]

(quoted from post at 18:25:41 06/14/14) It's a "type A" circuit regulator. Two sets of
points. Has a current regulator and a voltage
regulator. One is the cut-out. Supposed to have an
air-gap of .020" and set to close at 12.8 volts. The
voltage regulator points have an air gap of .075"
and adjusted to make 14 volts.

Thank you thank you thank you. That is exactly the information I needed. Happy in Michigan.

 

[teddy52food]

Sounds like the fine pull-in windings in the cut-out are bad.

 

[John T]

If that's the case?????? that's not fixable by adjusting any air gaps or spring tensions......The cutout relay has BOTH a fine wire shunt winding (sounds like youre talking about) plus the bigger heavier wire in series. Unfortunately, its usually the more expensive problem lol like a new VR grrrrrrrrrrrrrr

John T