Jump starting tractors

[Username Taken]

My Brother's auto shop has replaced many, many computers due to jump-starting. He likes it when you do that.

On vehicles without computers it's less criticial. On any of them, it isn't the two batteries that cause the problem, it's when two alternators are pumping juice into two batteries at the same time with the voltage regulator(s) trying to figure out if it needs to crap or make a sandwich.

That can cause problems. Not always. But sometimes it does.

But, hey..... ECM's are cheap these days. If you can even find one.

Either buy a battery once in a while or keep a jumpbox on hand. I don't, and won't, own a set of jumper cables.

 

[i7win7]

Road service vehicles have a remote plug in connection for their jumper cables. Inspiration for my power mod

Adding electrical devices to tractor

Purpose of post: to provide general ideas to fellow tractor owners wishing to add lights, electric sprayers, even some high current accessories for short term intermittent use (think winches, jump starts). I'll start with the high power preparations. #1 good heavy duty wire, at Walmart you...

www.tractorbynet.com

 

[Username Taken]

And oh...... Know why your charging unit is called an alternator? Because it makes alternating current (a/c). Your vehicles, and batteries, use direct current (d/c).

The A/C has to be converted to D/C at some point, often inside the ECM. You sending two signals to your computer is..... Uncool.

I just don't know why people still insist on using jumper cables.

"My grandpappy used jumper cables on his old still and if it's good enough for him, it's good enough for..... Hey! What's that darn dog doin' in my bed again?!!"

 

[PILOON]

My 'starting insurance' back in the '70's was to install a new battery in the company car every 2 years.
The battery was cheaper than calling a tow truck plus I'd have a 3-4 hour head start over my competitors.

Back then most sales reps had those devices that started your car every 3 hours or so.
LOL, when on the road you'd want a motel room far away from the parking due to all those cars starting all night.

My jumper cables and vehicles are all equipped with Anderson quick connectors for easy boosting.

 

[RjCorazza]

And oh...... Know why your charging unit is called an alternator? Because it makes alternating current (a/c). Your vehicles, and batteries, use direct current (d/c).

The A/C has to be converted to D/C at some point, often inside the ECM. You sending two signals to your computer is..... Uncool.

I just don't know why people still insist on using jumper cables.

"My grandpappy used jumper cables on his old still and if it's good enough for him, it's good enough for..... Hey! What's that darn dog doin' in my bed again?!!"

The alternator itself rectifies the AC voltage to DC, then on to the machine's battery and other systems.

 

[Username Taken]

The alternator itself rectifies the AC voltage to DC, then on to the machine's battery and other systems.

Old School, yeah, maybe, on some.

Not so much anymore. I think they're putting a lot of that (the rectifier) into the ECM these days. Maybe not

 

[LittleBill21]

Old School, yeah, maybe, on some.

Not so much anymore

please provide a link to where the ecm is rectifying ac to dc, I have never seen this, let alone heard of it.

for everyone who thinks jump starting is bad, every single motorhome does this every time they start

the house battery's get tied to the start batteries, and 100+ amps flows.

and those with the dual alt power issue, rv's and boats have alternators tied to solar chargers etc.... they are never shut off. no fried alternators.

the fastest way to kill an alternator is under heavy charging and disconnect it with no battery attached. which in a jump start situation never happens.

 

[Username Taken]

Dodge, Chrysler, Jeep PCM High Output Alternator Charging Explained

In this article, we’ll discuss what exactly the PCM high output alternator does in Dodge, Chrysler, and Jeep vehicles and why they must stay functional. We’ll also look at common symptoms associated with malfunctioning PCMs and how they should be diagnosed and repaired correctly. Finally...

js-alternators.com

Most Chrysler alternators don’t typically contain a regulator, the exception being the analog-controlled application. Chrysler controls the alternator externally. A PCM controls the field current. The voltage regulator electronics are housed within the PCM.

 

[PILOON]

My 'jump start' techniques.
Always clip onto my vehicle 1st.
Clip 'patient vehicle' + terminal and then ground to the patient's on an engine metal bracket.
Let my vehicle run at idle for a short time to charge the patients battery somewhat.
Only then do I signal patient driver to do a start.

Oh and my HD cables are 20 ft long which helps very often.

 

[bearthebruce]

Dodge, Chrysler, Jeep PCM High Output Alternator Charging Explained

In this article, we’ll discuss what exactly the PCM high output alternator does in Dodge, Chrysler, and Jeep vehicles and why they must stay functional. We’ll also look at common symptoms associated with malfunctioning PCMs and how they should be diagnosed and repaired correctly. Finally...

js-alternators.com

Most Chrysler alternators don’t typically contain a regulator, the exception being the analog-controlled application. Chrysler controls the alternator externally. A PCM controls the field current. The voltage regulator electronics are housed within the PCM.

A regulator controls the voltage.... a rectifier converts ac to dc... The rectifiers are still mounted in the alternator.

The voltage regulator is a circuit in the alternator that is controlled by messages sent from the ECU over the LIN bus. Dodge is not the only one doing this. Many of the newer cars do this.