Re: Still struggling- Farmall M

Posted by John T on November 25, 2005 at 08:05:00 from (66.244.90.98):

In Reply to: Still struggling- Farmall M posted by fisherman on November 25, 2005 at 07:16:38:

Fisher, this is gettin a lil cornfusing, Bob n El Toro n Jim n Cowman have way more Farmall expereience then myself, I had Farmalls but its been many moons ago. However, heres my impressions for now and my "best guesses" at what you have since before we can advise you we all need to know n decide just what you have.

1) Since the genny says right on it 6 volts, for now Im gonna go with its a 6 volt and lets proceed with your wishes to make it an original 6 volt system.

2) Since what you call a "plate" on the genny has a spring coil (and I assume you mean only one coil) and ESPECIALLY if it has ONLY 2 terminals and NOT three, Im calling it a Cutout Relay and NOT a Voltage Regulator.

3) If its really a Magneto Ignition, theres no need for any Ballast Resistor nor would it have one SOOOOOOOO disregard any of my earlier comments proclaiming it needs a ballast cuz thats ONLY true if it were a battery powered coil ignition. ALSO there shouldnt be any voltage to the Magneto, if it has any wires or terminals, those are only Kill Switch wires which kills the spark if a ground (via an ON/OFF switch) is attached.

4) The 2 bolts you refer to are the mechanical starter switch. The one side is from a big cable to the battery so it should ALWAYS BE HOT but the other side wired to the starter should be hot ONLY when the starter is depressed (its just a switch inside there).

IF ANY OF THE ABOVE ISNT CORRECT I HOPE SOME OF THE OTHER GENTS CORRECT IT BUT FOR NOW ITS ALL I GOT TO PROCEED WITH.

Soooooooooo, once you get a good and charged up 6 volt battery installed with a new 00 Gauge cable from the battery to the starter switch and another to a good clean rust free soild frame member bolt for ground and you depress the starter we will know more. Ifffffffff when depressed the lights dim wayyyyyy down badly and the cables may get warm but she dont crank over, I question the starter quality (or maybe its mechanically stuck n jammed?? rock the engine or loosen the starter n try it) so post back n let us know. However, if the lights dotn dim too much but she still fails to crank I would question the quality of the starter switch IFFFF the cables n grounds n connections are ALLLLLLL good. The starter switch may be burned n carboned up inside !!!!!!!!!! BE SURE ALL BATTERY N STARTER N SWITCH N GROUND CONNECTIONS ARE CLEAN N TIGHT Especially the one that popped !!!!!!!!!!!!! remove n clean n wire brush them alllllllllllllllll

If you wanna use 6 volts on an M, I would suggest the absolute biggest n heaviest highest CCA rated battery you can physically fit on the space plus no less then 00 Gauge batteyr n starter n ground cables.

5) If it is a 2 wire Cutout (one coil 2 terminal) Relay and NOT a 3 wire VR, then the gennys Field post would have to be wired up to the light switch for controling the genny. Do you have a 4 position LHDB light switch??? If so it as a terminal that wirs dwon to the gennys Field post. Check Bob M"s wiring diagrams and what he has to say for better info regarding that n the switch.

6) If it is a 2 wire Cutout relay its BAT side wires up to the ammters load (NOT to battery/starter) side terminal and its GEN side wires to the gennys Arm post.

7) If it is a Magneto theres no ballast nor external coil but if it has a kill wire stud it wires to the tractors ON/OFF RUN/STOP etc switch with the other switch lead wired to ground.

8) YES to be safe I would re polarize the genny, just momentarily flash jump a wire around its cutout relay from its BAT side to its GEN side n you ought to get a lil spark.

REMEMBER This is for a 6 volt genny and a 2 wire cutout relay and a light switch genny field current controller and a Magneto Ignition, Sooooooooooooo if thats NOT what you have let us know n we will try this again.

Thats the best I have to offer fer now based on my "best guesses" as to what you have.

John T

Follow Ups:

• Re: Still struggling- Farmall M Diesel Don 09:00:02 11/25/05 (0)
• Re: Still struggling- Farmall M fisherman 08:11:54 11/25/05 (0)

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