Re: Checking continuity with a voltage regulator

Posted by John T on January 07, 2011 at 12:12:49 from (66.87.5.14):

In Reply to: Checking continuity with a voltage regulator posted by Dave H (MI) on January 07, 2011 at 08:36:41:

Dave, Heres the real deal:

If the ignition switch is fed its hot voltage off the L terminal on the VR and thats NOT hot, SHE CANT EVER SPARK OBVIOUSLY.

There MUST be hot battery voltage present on:

BOTH sides of the Ammeter,,,,The BAT terminal on the VR,,,,,the L terminal on the VR (contrary to a post below). The L terminal is what feeds hot battery voltage to loads lights and Ignition EVEN IF TRACTORS ISNT RUNNING AND EVEN IF GENNY ISNT YET CHARGING

Okay, you ask for a VR Diagram, here is one:

http://chevy.oldcarmanualproject.com/electrical/49dr324/1r11102.htm

To see if the VR is the problem (L should be hot and if not she cant fire) feed the ignition instead off the Load (NOT battery/starter) side of the ammeter n see if she fires then?????

On tractors that used a 3 terminal VR that didnt have the Load terminal, loads like lights and ignition got fed off the load side of ammeter. Thats the same (load) side of ammeter that wires down to BAT on the VR, the ammeters other Supply side wires to the battery.

If you wanna still use that VR thats bad cuz the L isnt hot, just unhook the wire off L and wire it instead to the load side of the ammeter (or even over to BAT, same thing electrically). the its working just like a 3 terminal (NO L) VR with loads fed off ammeter. If L works (always hot) then Id use it as it regulates a bit better

If still no spark run my Troubleshooting Procedure:

http://www.ytmag.com/cgi-bin/viewit.cgi?bd=farmall&th=5745

Got it?????????? If no voltage to L and ignition is fed off L: NO FIRE,,,,,Try to feed ign switch off ammeters load side or VR's BAT n see if she sparks???

Let me know, Im on and off aS iM ON THE ROAD IN MY rv IN fLORIDA but I will eventaully get on

John T

• John T's Ignition Troubleshooting

Replies:

• Re: Checking continuity with a voltage regulator Dave H (MI) 13:32:38 01/07/11 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Optional Video Title: Optional Video URL: Advanced Posting Options Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.   Advanced Posting Tools   Upload Photo  Select Gallery Photo  Attach Serial # List  Return to Post

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]