SUPER MD WIRING

Anonymous-0 · Nov 8, 2008

HELLO ALL, I JUST PICKED UP A SUPER MD AND AM HAVING PROBLEMS WITH IT TURNING OVER, AFTER REPLACING ALL FILTERS AND FUEL AND FOUR CANS OF CARB CLEANER I WAS ABLE TO START IT, THEN THE NEXT DAY I COULDNT GET IT TO TURN OVER, I REPLACED THE PUSH BOTTON STARTER SWITH AND AM GETTING POWER THROUGH THE SWITCH TO THE SARTER BUT NO STARTER ENGAGE, ALSO THS TRACTOR HAS NO SELINOID OR REGULATOR IS THERE SUPPOSED TO BE ONE, ALSO DOES THE COMPRESSION LEVER HAVE TO BE IN A CERTIAN POSITION TO ENGAGE THE STARTER. ANY HELP IS GREATLY APPECIATED.

Nebraska Kirk · Nov 8, 2008

First of all, the compression lever must be in the decompressed mode, lever to the rear, for the starter to be able to turn the engine over. It is also possible that the starter is jammed in gear, loosen or remove the starter bolts and wiggle the starter and it should come unjammed.

Farmall wrangler · Nov 9, 2008

I think you mean "lever forward" to be in the start/gas mode.

Janicholson · Nov 9, 2008

There is supposed to be a voltage regulator for the charging system. The starter has no solenoid, just a heavy wire from the big starter switch.
The starter drives (gear to turn the flywheel) go bad on these, and jamb into the flywheel's ring gear and lock the starter. Loosen the starter, as noted below to free it up. A clutch style starter drive from Steiners Tractor, or CaseIH dealer will improve this dramatically. If the cables are OOgauge wire, and the battery is good/charged, and it fails to turn past a cylinder (turns some, but will not turn completely through) the diesel changeover lever is in the wrong position. The starter will not crank it in the diesel position at all!.
Getting a manual (from this sight, or Binder Books will be very important in keeping the tractor as your friend. JimN

Marv · Nov 9, 2008

I have a SM diesel and the correct starting procedure is to have the compression lever forward to start. A definite "click" will be heard as the lever goes forward. This action changes the compression over from diesel to gas. The hand throttle show be lowered also.

As the engine starts, leave it run on gas for a few minutes.

To change from gas to diesel, pull the compression back and immediately advance the hand throttle up far enough to keep the engine from stalling.

Always allow the engine to cool the engine before shutting down and always shut the tractor off in the diesel mode.

To shut the engine off just simply lower the hand throttle.

Note: For the engine to run on gas, it needs current to the distributor so the the pull button must be pulled out. I push mine in after the tractor is running on diesel. Good luck.

One last comment> I have observed farmall 400 and 450's diesels start with the compression lever just opposite that of the M and SM diesel's.

SUPER MD WIRING

Anonymous-0

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Nebraska Kirk

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Farmall wrangler

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Janicholson

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Marv

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