ZZZZZZZZZZZZZZtttttt!!!!!!!!!!

[Farmwithjunk]

Yesterday, a friend dropped off a 135 Massey (diesel w/alternator) at my house. Charging troubles. It was literally melting batteries. I found the 3-wire (GM style) alternator wired rather odd. It had sensing wire and field wire tied to #2 (field) terminal. Alternator was in a state of constant "full output" (OVERcharging battery constantly)

OK auto electric wizards, Am I correct in this next statement? #2 (sensing) connects to batt, #1 (field) connects to gauge/idiot light? (I'm looking at the wiring on MY 150. All wires encased in a protected harness. Can't distinguish which wire goes to what without butchering my harness. I'd rather do without that)

None of the Massey manuals I have shows #1/#2 terminals on alt. It just shows wires to alt. I can't find any good illistrations in any other manuals. And I'm NOT "up" on my auto electrical's. (I HATE working on something that's been "doctored" from original. )

 

[scott_vt]

Yesterday, a friend dropped off a 135 Massey (diesel w/alternator) at my house. Charging troubles. It was literally melting batteries. I found the 3-wire (GM style) alternator wired rather odd. It had sensing wire and field wire tied to #2 (field) terminal. Alternator was in a state of constant "full output" (OVERcharging battery constantly)

OK auto electric wizards, Am I correct in this next statement? #2 (sensing) connects to batt, #1 (field) connects to gauge/idiot light? (I'm looking at the wiring on MY 150. All wires encased in a protected harness. Can't distinguish which wire goes to what without butchering my harness. I'd rather do without that)

None of the Massey manuals I have shows #1/#2 terminals on alt. It just shows wires to alt. I can't find any good illistrations in any other manuals. And I'm NOT "up" on my auto electrical's. (I HATE working on something that's been "doctored" from original. )

Mornin Farm,
Here is a diagram of a 12v alternator from Bob M on the Farmall board.http://albums.photo.epson.com/j/View?u=4001561&a=30065733&p=62857347&Sequence

Guess its not workin, try goin over to the Farmall board on YT and do a search on Bob M wiring, that should get you a schematic. Good Luck.

 

[Farmwithjunk]

Got 'er DONE. "F" on alternator goes to idiot light. "S" (or in the case of this alternator, "R") goes to #2 post on regulator.(stator). It now charges like it's SUPPOSED to. Someone along the way twisted both wires together and connected to "F" (field) on alt. It ran alt. WFO, overcharging battery BIG TIME.

Got my friends tractor fixed AND learned something myself along the way! Good day all 'round!

Thanks Scotty!