JDcrawlers Messageboard

Hi, Yep. Regardless of voltage, a generator needs to be polarized to match which side of the battery is used for ground. 6, 12 or 24. And there were some 32, 36 and 48 volt as well. Just not on our machines we chat about here. The norm is 6v is positive ground and 12v is negative ground. But the ear...

Hi, There are mild steel plates associated with the field coils in a generator. What you are doing is making them into a mild permanent magnet. Setting one end North and the other end South. Like the poles on the planet. Hence the term Polarization. That is where the initial magnetic field comes fro...

Hi,

We had our first snow here in NC. 2 1/2 inches. It didn't need plowing with a tractor, much less a crawler.

Stan

Hi, The way distillate combusts is that the lighter fraction will burn first. So the spark ignites and burns all the gas, which makes heat which burns the kero which makes heat to burn the diesel. The lower compression allows for this rather than it all trying to burn at one time, which will knock a...

Hi,

Ha!

Stan

Hi, There is a slight difference in the shape of the piston top in an all-fuel v a straight gas. But the main difference is the addition of shutters in front of the radiator to give higher running temps. You get to eyeball the gage to not let it get too cold. These were thermosiphon up till the 420,...

Hi,

I put these in the FAQ:

http://www.jdcrawlers.com/messageboard/ ... =2&t=13107

Stan

Hi, All fuel was Distillate. The leftover parts of petroleum distillation. As one boils the crude in a still, the temperature rises in between the fractions then steadies for each one. Gas, Naptha, kerosene, No1 fuel oil, Diesel. What they did was open a valve to each pipe in turn when the temp stea...

Hi,

That is my thinking as well. So I would count on all the 6v bits being in trouble by now....

Stan

Hi, Easy. Hook up meter to battery and read voltage. Should be about 12.5 v. Start machine. Voltage drops from load then rise up to around 13.8 v. If not, then you know it isn't charging. The ignition issue may well be there is no resistor added into the line feeding the coil. That would make the co...

Hi,

Thanks! I added that one to the list.

Stan

Hi, From the list in the FAQ section: 440 OM T54458 - 440IC OM T54859 - 440IC (sn 448001 up) OM T73459 - 440 ICD SM 2023 - Spark Ignition SM 2028 - GM 2-53 Diesel Engine PC 573 - 440 IC PC 609 - 440 ICD 63 Bulldozer PC 569 64 Bulldozer OM U11307U OM D50-558 PC 588 602 Bulldozer OM U11413 91 Loader O...

Hi,

I never saw any mounted. Just pics in the parts catalog.

Stan

Hi,

There were optional rubber pads back when these machines were new.

Stan

Hi,

I use 10w30 in my 2-cylinders. Easier cranking for the 6v systems. Especially in cold weather.

Stan