Blown Fuse on Regulator...IH CC 782....???

[Rbertalotto]

I finished the mild renovation of my IH CC 782 yesterday. I rewired the entire tractor, adding a fuse block to the system.

I fused the lights, the gauges, the coil 12V feed and the REGULATOR feed to the battery.

I also installed a 50A circuit breaker at the battery as a "Dead Man" switch and to protect the starter wiring and the fuse block wiring

I deleted the ignition switch and went with a "Push To Start" system.....Turn coil on, hit start switch....engine running....Turn on regulator..... Could this sequence I'm using be an issue? Should the regulator be on before the start sequence?

I inserted a 15A fuse on the line from the Regulator to the battery. After about 15 minutes of run, the 15A fuse blew.

Not sure if it blew during a start up or while the tractor was running.

The size of the factory wire from the regulator to the battery would suggest we are not looking at a lot of current here.

My regulator is outputting 14.2V. I installed a switch on this regulator to battery feed if this might have any bearing.

Anyone have any idea what might have happened?

[R Bedell]

I rewired the entire tractor, adding a fuse block to the system.

Anyone have any idea what might have happened?

Not a clue. You will have to back track your wiring.

[ol'George]

That has to be the most fancy wiring I've ever seen on a lawnmower.
Since I have no clue what you have thunk up for a ski-matic, I'm guessing
your 15 amp fuse was over come with a higher amp output from the alternator/regulator.
It sure as hell didn't blow on start up, as the amp output is lower till the rpm's are increased to WFO.
If the reg sensed the battery voltage was low from start up and accessory usage, it will output it's fullest to replenish the battery.
Since 14.2 is good and as expected, curiosity begs me to ask why did you install a switch and fuse in that circuit?
other than it looks purdy
Are you wanting to increase the HP a negligible amount by eliminating the slight parasitic drain during battery recharging?

Back in the late '50's we loosened the fan/water pump/generator belt on our high revving chevies to achieve every ounce of HP they would put out to increase the 1/4 mile times by an un measurable millisecond.
We also used deep groove pulleys to keep the belt on them as it was required in NHRA rules that a belt needed installed.
Many other"tricks" were used like oil instead of grease in wheel bearings,front shocks installed upside down for instant weight transfer, pinion snubbers set down to the dif case for instant loading, cutting every bolt off protruding it's nut to lighten the car by about #100 and still run "stock" class
Are you "pulling" this Tractor?
----(Sorry for an old man memories, of high skool days)

[Rbertalotto]

Ol' George....Love this post. We are "twin brothers from different mothers!"

other than it looks purdy

Of course that's the reason.....I did this type of wiring in RVs and Car Stereos for years. Give me a switch or a relay and I'll find something to control!

Actually, I had those three "Rocket Launcher" switches hanging around and I just HAD to use them somewhere.

Turning on the gauges and the regulator where the only two electrical things left!

I'm shocked that these tractors did not protect any of the primary wiring from shorts and potential electrical fire.....So fuses in my book were a must.

Back to the regulator blown fuse. I put a 20a fuse in the circuit.....we'll see what happens.......

[ol'George]

"twin brothers from different mothers!"

I always wondered about myself as my mother never had any children that lived except my sister.
So you see, I'm just a figment of peoples imagination, I don't really exist.

[Rbertalotto]

I think it was Frankl Zappa that coined that phrase.....

[ol'George]

Originally Posted by Rbertalotto

I think it was Frankl Zappa that coined that phrase.....

Not that I was aware of, it is an ol'George original.