4020 No start

marcusoverholtzer · Feb 27, 2017

Hey guys, been trying to get the 4020 to start but no go. It turns over like it has a dead battery but I took the batterys to Napa and they said they were fully charged. Any ideas why it would do this? Any help will be appreciated as I'm trying to get it ready to sell. Thank, Marcus

rrlund · Feb 27, 2017

Could be lots of things. Check your ground cable where it hooks to the frame and see if it's getting hot.

Janicholson · Feb 27, 2017

Charged batteries are not always good batteries. Load testing a battery and hygrometer testing the cells (if they open) will tell the story. Each 12v battery should be reading 10.8 or more volts from post to post while cranking. (If 24 volts, measure at least 21.5 or so at the starter terminal to ground while cranking. If the Batteries are good and will crank other vehicles well, and cables are good, and connections tight, it should crank well. Cables can be bad inside the insulation!! Jim

rustred · Feb 27, 2017

if the said below is good ... the starter may be toast.

guido · Feb 27, 2017

Hello Marcy overholtzer,

Take some voltage readings while cranking the engine. Battery voltage and stater lug voltage to start. Better guessing that way,

Guido.

marcusoverholtzer · Feb 27, 2017

what do I need to test it? I doubtI have the tools to do it,

Tx Jim · Feb 27, 2017

Marccus
Turn steering wheel rapidly from side to side to relieve hyd pressure while attempting to start engine or buy,install & utilize a hyd pump destroking screw which cost about $15

marcusoverholtzer · Feb 27, 2017

tried that.

donjr · Feb 27, 2017

Follow your battery cables from the starter to the ground point. Check the voltage to ground on the wire and the fittings. If even one reading is a bit higher, especially on the starter side, you have a bad cable. I have replaced several over the years, and my 22520 had one that was grounded under the floor plate. That one is a real beyotch to get to. But, you have three cables on that tractor, and if any of them have a bad connection through the cable, it can almost kill the voltage the starter is getting.

Tx Jim · Feb 28, 2017

(quoted from post at 23:53:07 02/27/17) Follow your battery cables from the starter to the ground point. Check the voltage to ground on the wire and the fittings.

IIRC Marcus has a 4020 diesel which has "no true ground" except for lights & fuel gauge but not for starter. One can check voltage & amp draw at starter

ss55 · Feb 28, 2017

A cheap $10 VOM (Volt-Ohm-Milliammeter often called a multimeter) will do what you need. Any hardware store, auto parts store, big-box lumber store, Amazon, E-bay will have them. Either analog or digital will work for your purpose. They are very handy once you learn to use one.

guido · Feb 28, 2017

Hello marcus,

Battery voltage while cranking the engine. Starter voltage at cranking speed to start,

Guido.

4020 No start

marcusoverholtzer

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rrlund

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Janicholson

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rustred

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guido

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marcusoverholtzer

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Tx Jim

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