Hi,
Yes, you need a resistor if you are keeping the original coil. Or you can change it to a 12v coil.
Stan
Search found 2848 matches
- Fri Feb 04, 2022 5:35 am
- Forum: Early model JD crawler technical support
- Topic: 420-crawler new voltage regulator 6 volts
- Replies: 13
- Views: 6399
- Thu Feb 03, 2022 5:29 am
- Forum: Early model JD crawler technical support
- Topic: 420-crawler new voltage regulator 6 volts
- Replies: 13
- Views: 6399
Re: 420-crawler new voltage regulator 6 volts
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...
- Wed Feb 02, 2022 5:36 am
- Forum: Early model JD crawler technical support
- Topic: 420-crawler new voltage regulator 6 volts
- Replies: 13
- Views: 6399
Re: 420-crawler new voltage regulator 6 volts
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...
- Sun Jan 23, 2022 6:11 am
- Forum: Off-topic discussions
- Topic: Snow!!
- Replies: 3
- Views: 12889
Re: Snow!!
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
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
- Sun Jan 09, 2022 6:07 am
- Forum: Early model JD crawler technical support
- Topic: 40C All fuel running on 75% diesel
- Replies: 19
- Views: 11348
Re: 40C All fuel running on 75% diesel
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...
- Wed Jan 05, 2022 5:51 am
- Forum: Off-topic discussions
- Topic: I finally figured it out....
- Replies: 2
- Views: 12497
Re: I finally figured it out....
Hi,
Ha!
Stan
Ha!
Stan
- Wed Jan 05, 2022 5:48 am
- Forum: Early model JD crawler technical support
- Topic: 40C All fuel running on 75% diesel
- Replies: 19
- Views: 11348
Re: 40C All fuel running on 75% diesel
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,...
- Tue Jan 04, 2022 5:41 am
- Forum: Late model JD crawler technical support
- Topic: 1985 350c isolator
- Replies: 15
- Views: 7187
- Fri Dec 31, 2021 5:33 am
- Forum: Early model JD crawler technical support
- Topic: 40C All fuel running on 75% diesel
- Replies: 19
- Views: 11348
Re: 40C All fuel running on 75% diesel
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...
- Thu Dec 30, 2021 5:50 am
- Forum: Early model JD crawler technical support
- Topic: Potential 420c Purchase
- Replies: 11
- Views: 6430
Re: Potential 420c Purchase
Hi,
That is my thinking as well. So I would count on all the 6v bits being in trouble by now....
Stan
That is my thinking as well. So I would count on all the 6v bits being in trouble by now....
Stan
- Wed Dec 29, 2021 5:39 am
- Forum: Early model JD crawler technical support
- Topic: Potential 420c Purchase
- Replies: 11
- Views: 6430
Re: Potential 420c Purchase
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...
- Fri Nov 26, 2021 5:35 am
- Forum: Early model JD crawler technical support
- Topic: manuals for 440 ICD and 831 loader
- Replies: 4
- Views: 3534
Re: manuals for 440 ICD and 831 loader
Hi,
Thanks! I added that one to the list.
Stan
Thanks! I added that one to the list.
Stan
- Thu Nov 25, 2021 5:39 am
- Forum: Early model JD crawler technical support
- Topic: manuals for 440 ICD and 831 loader
- Replies: 4
- Views: 3534
Re: manuals for 440 ICD and 831 loader
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...
- Wed Oct 27, 2021 4:31 am
- Forum: Early model JD crawler technical support
- Topic: Any body play around with rubber pads on 420 or other crawlers?
- Replies: 19
- Views: 14886
Re: Any body play around with rubber pads on 420 or other crawlers?
Hi,
I never saw any mounted. Just pics in the parts catalog.
Stan
I never saw any mounted. Just pics in the parts catalog.
Stan
- Tue Oct 26, 2021 4:24 am
- Forum: Early model JD crawler technical support
- Topic: Any body play around with rubber pads on 420 or other crawlers?
- Replies: 19
- Views: 14886
Re: Any body play around with rubber pads on 420 or other crawlers?
Hi,
There were optional rubber pads back when these machines were new.
Stan
There were optional rubber pads back when these machines were new.
Stan