I inquired earlier about a mounting flange for the H4 magneto on my 1946 International A tractor. I found one at a local auto electric shop. Their long time magneto guy rebuilt the magneto since he found some internal problems and he bench tested it (I watched him). Firing fine on the bench.
Took it home and installed it on my tractor just as I had taken it off. However it was missing and not firing on all cylinders. #3 cylinder missing. I got out the manual and noticed that it was installed not like the manual said. #1 cylinder was wired into the magnet on the connection next to the engine, so one connection off all the way around. I redid the connections as manual said. However, the engine then backfired badly and would not start.
So I started over and tried to retime the mag to the engine. I did as the manual said and got number 1 cylinder to the top of dead center. I checked for the D.C. mark on the flywheel. Now there is a paint mark there but I could not find for sure the D.C mark as described in the book.....and I looked hard. I then removed the distributor cap and turned the magneto coupling until the metal strip on the distributor rotary pointed toward the No.1 terminal on the distributor cap per the manual. i felt pretty good since impulse would trip just as I reached the top of cylinder #1 as the manual said.
Put it back together and cranked over the engine. It back fired and would not start.
I put the wires back as I originally took them off with #1 next to the engine on top instead of outside top. Tractor started but would not fire on #3. Color me frustrated. The mag does rotate clockwise.
Now it has been converted by a previous owner to 12 volt with an alternator. I have had it almost twenty years that way. And it was running fine until I had the mounting flange replaced, and it did test out on the bench. Any recommendations??
Took it home and installed it on my tractor just as I had taken it off. However it was missing and not firing on all cylinders. #3 cylinder missing. I got out the manual and noticed that it was installed not like the manual said. #1 cylinder was wired into the magnet on the connection next to the engine, so one connection off all the way around. I redid the connections as manual said. However, the engine then backfired badly and would not start.
So I started over and tried to retime the mag to the engine. I did as the manual said and got number 1 cylinder to the top of dead center. I checked for the D.C. mark on the flywheel. Now there is a paint mark there but I could not find for sure the D.C mark as described in the book.....and I looked hard. I then removed the distributor cap and turned the magneto coupling until the metal strip on the distributor rotary pointed toward the No.1 terminal on the distributor cap per the manual. i felt pretty good since impulse would trip just as I reached the top of cylinder #1 as the manual said.
Put it back together and cranked over the engine. It back fired and would not start.
I put the wires back as I originally took them off with #1 next to the engine on top instead of outside top. Tractor started but would not fire on #3. Color me frustrated. The mag does rotate clockwise.
Now it has been converted by a previous owner to 12 volt with an alternator. I have had it almost twenty years that way. And it was running fine until I had the mounting flange replaced, and it did test out on the bench. Any recommendations??