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Tractor Talk Discussion Board

Re: John Deere 4020


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Posted by Ray Tractor on November 26, 2016 at 15:44:02 from (184.53.33.182):

In Reply to: John Deere 4020 posted by marcusoverholtzer on November 26, 2016 at 12:56:17:

If you are talking about general mainterance, I will bite and give it a try. I'm sure others will add some things. Otherwise, you have to tell us what you think is wrong with it or there is no use to fix something that is not broke.
clean, tighten, and protect battery connections, or replace with new, heavy cables
remove batteries from boxes, clean, repaint, or otherwise protect from rusting
add water to batteries
drain, flush, and change coolant with additive(I use JD Coolguard)
change engine oil and filter
change hydraulic oil if is been over 5 years(just my guideline, not technically accurate)
change hydraulic filter and clean screen
check for leaks around load control shaft and replace seals while you have hydraulic fluid drained
adjust clutch free travel
grease all steering zerks and throwout bearing if applicable
clean oil bath air filter and replace oil
replace fuel filters
borrow a hydraulic pressure tester that goes in the hydraulic coupler and adjust standby pressure to spec(2250 psi IIRC)
blow out radiator fins and oil cooler fins with compressed air
lubricate lift control lever and cable
grease lift arm adjusters and center link threads
check operation of lights, clean ground connections where needed
grease front wheel bearings and check toe-in of front tires
check tire pressure
and if you get real ambitious, you can always change the air in the tires!


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