[AT] Not quite an antiques problem...

[Milo Holroyd]

Dennis,
Pertronix has everything you need to convert to electronic ignition. 
Well worth doing.

Milo


On 12/19/22 9:37 PM, Dennis Johnson wrote:
> John,
>
> I had a Start/Stop issue come up today. Not sure if this relates to your situation, but is worth sharing anyway.
> I was moving my Hustler Super Z out of the way so I could get tractor out of the garage and clean up to insulate walls. Got the Super Z to start, and then would initially, but die whenever I moved a lever. Found out the key was sticking in the start mode, so when I moved any lever, the “do not start with drive engaged” circuitry kicked in and killed the engine. Restarted and manually moved the key to the run position and all was well. (On the Super Z) Not sure this is your issue, but easy to check.
> Went to start my IH 2504 and not so good luck. It is not firing. Guessing I need points and condenser, but was in a hurry so I pulled it out of the shop for now,
> Does anyone know if there is a conversion kit to switch out points to some electronic pointless system to make spark on an IH 2504 or 504 tractor??
>
> Thanks
> Dennis
>
>
> Sent from my iPad
>
>> On Dec 19, 2022, at 2:54 PM, John Maddock <agtronixjv at bigpond.com> wrote:
>>
>> 
>> ....but a puzzle for the brains trust, never the less!
>>
>> JCB JZ140 excavator, (9500 hrs) electrical problem.
>>
>> Briefly:  machine has not been used for most of the winter, but I’ve topped up the batteries twice each month.  Noted at the last charging session a week ago that  one of the batteries took a long time to reach full charge.
>>
>> Today, the electronic monitor screen showed low battery voltage & the starter motor refused to operate.
>>
>> Connected 24v from external batteries & everything sprang to life as normal.
>>
>> Moved the machine maybe 5.0 m to lift and reposition some equipment, then moved it 5.0m back again, the engine running for maybe 15 mins.  Aircon was on at the same time to wet the compressor seals.  Decided to check the battery state, so killed the engine and re-started it - just.  Tried again, and the screen showed low battery voltage and flywheel sensor fault.
>>
>> Reconnected the jumper batteries - and observed the following:
>>
>> 1. “Dead” electronic monitor unit; no screen, no symbols.
>> 2. A very dim LED on the Emergency Stop button. (Usually, that has to be used as well as the switch to stop the engine. No idea why; been that way since I bought the machine).  In addition, pressing the button did not switch off the dim LED, as it normally would.
>> 3. The engine starts - and stops instantly.
>> 4. The throttle arm does not move; it is unclear if it remains in the “engine stop” position and as a result the engine is somehow running briefly on residual fuel.  The run/instant stop is repeatable, not a oncer.
>> 5. Switching to “limp mode” makes no difference to any of the above.
>>
>> I’ve:
>> 1  checked the fuse for ECU-STD, EMS Battery Supply; multimeter said its ok.
>> 2 disconnected the onboard batteries; now running completely on fully charged, external, jumpered batteries.
>> 3 Read the service manual carefully.  It suggests checking input/output voltages at several input/output points on the ECU.
>>
>> Considering Farmer's frequent calls "Check the grounds, check the grounds" does this sound like an earthing fault at a point common to all the observed irregularities?
>>
>> JV
>>   
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