1020 Hot Start Issue

My 1020 doesn't always want to start after it has been worked awhile. The start issue is because it won't turn over. It has all of the earmarks of a bad/low power battery. But . . .

* Battery is good. 12.7 volts. Load tested.
* All connections have been cleaned
* It cranks and starts just fine from cold
* There is a Battery Minder on the battery when in the barn

Worked it yesterday. Parked it outside. Went to put it in 1 hour later. Just a grunt/click from the starter. Battery charged for 2 hours just in case. Just a grunt/click. Left it out overnight (no charger). Started right up this morning.

It has done this off and on for several years. I'm getting tired of not being able to count on it starting. Any ideas?

Bad spot in the starter? Weak starter?
 
Heat expansion is causing you to lose connection. I would start with the starter but it could be any where in the starting circuit.
 

If battery ground cable hasn't been relocated from rusty battery box to engine block/starter mounting bolt then now is the time to do just that. When attempting to start engine do you vigorously turn steering back & forth to relieve hyd pressure?
 
12.7 volts with a load-test on your battery? That makes no sense. It ought to drop to 9-10 volts under load if good. Lower if bad.

Check battery voltage when actually trying to crank it over. If it does not drop below 9 volts - then the battery is fine. Do the same sort of voltage reading at the starter when trying to crank. If it still stays at 9 volts or higher - then power is fine and it is likely a a bad connection inside the starter or solenoid. If it drops below 9 volts - then you have some bad wiring between the battery and starter.
 
I've seen that happen to a starter just before they go completely bad. They heat up at the same time the engine does due to engine heat and that causes them to bind up and you get what your getting
 
Probably needs a starter. If all connections are good you
might try wrestling the cables where they go into the
the battery ends. Sometimes they get corroded or loose inside.
 

Add a de-stroker to the front pump . Even if it makes little difference in warm weather . It is a low cost assist to improve winter starting .
 
It does seem like it is binding up. I hate to just start replacing parts without knowing for sure. JD likes their parts real well by the prices for them. I might have to just bite the bullet and try it.
 
I did try to relieve all hydraulic pressure; loader and 3 pt but didn't realize that PS could also be an issue.
 

Testing the voltage of an unloaded battery does not prove the battery as good .
The only tea that counts is loading the battery heavy to it’s Cranking Amps or Cold Cranking Amps depending on temperature . Now this battery voltage testing under load will show if the battery is performing. Should be maintaining at least 9.5volts .
 
(quoted from post at 23:18:45 05/06/18) I did try to relieve all hydraulic pressure; loader and 3 pt but didn't realize that PS could also be an issue.

Actually power steering isn't an issue just a better way to relieve hyd pressure while attempting to start engine. One can mmount tractor,start engine by moving steering wheel to relieve pressure then go then operate tractor.

When utilizing destroking screw one needs to open LH screen by radiator then screw DS screw down several turns,mount tractor start engine,dismount tractor turn screw CCW,close screen remount tractor then operate tractor. Also continued use of destroking
 
Take it to an auto parts store and have it tested and be sure they test it a number of times. By the way this site is likely to have a new starter for your tractor and likely to be cheaper then JD is
 

I don’t find it a problem to destroke the pump on a cold day if the block heater has had barely enough time to warm the engine .
 
Load test it at the starter while it won't start if you want to know for sure. That will test everything in the high amp part of the system.
 
(quoted from post at 13:05:40 05/07/18)
I don’t find it a problem to destroke the pump on a cold day if the block heater has had barely enough time to warm the engine .

I thought you always had negative things to say about people that didn't utilize their coolant heaters correctly in COLD Weather. LOL
 

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