wiring diagram

[billy clay]

anyone have a diagram for the newer key start tractors there is a starter solinod under the floor pan and a wire is not hooked up , when you turn the key the solinod clicks but nothing happens

[Bigdog]

Billy - is the wire that is not hooked up a heavy cable? If you take a fairly heavy piece of wire and jumper across the two large terminals on the solenoid the starter should operate. (Make sure you are in neutral)
It is quite possible that the solenoid contacts are burned - it is a common failure. Since the solenoid clicks it sounds like the control part is working. If you do the test above and the starter turns the engine over replace the solenoid you should have one lighter gauge wire to the control terminal (small terminal) and the battery cable connected to one heavy terminal and the cable to the starter motor on the other heavy terminal.

[Rudi]

billy:

I see BD beat me to it as I looked up the latest edition of the TC-37F Parts Catalog that I have on the server -- the TC-37F Revision 6 (08-79) - Group 8 - Electrical. Hope this helps.



the parts listing is here on Page 39

[billy clay]

thanks for the info, it is a small gauge wire and looks like the neutral switch has been bypassed with get better look in the daylight tomorrow

[Pathfinder]

Any one have a diagram for '49 cub with a 12v alternator. Zena's coming back this week from a complete engine overhaul and would like to neaten up the wiring on her.

[Don McCombs]

Pathfinder, this thread may be helpful...

viewtopic.php?f=1&t=57524&p=473972#p473972

[Rudi]

Billy:

Actually whilst looking on the server I found a copy of Bob Melville's schematics. This is for the later key type with solenoid.



Pathfinder:

This is a copy of Bob Melville's Schematic for a 12 Volt GM 10SI Conversion For on a Super M - it would be similar.



The wiring for your specific alternator may be different if it is not a 10SI

[Bigdog]

thanks for the info, it is a small gauge wire and looks like the neutral switch has been bypassed with get better look in the daylight tomorrow

Billy - bypassing the neutral switch is a common practice. Not a good one but a common one nonetheless.

[billy clay]

solinoid is fine starter is bad pulled it apart and everything inside is rusted badly , took starter off my 1970 and put it on now she cranks over now need to track down no spark issue in morning

[Bigdog]

Suggest you start with cleaning the points. Probably glazed over or pitted.