[AT] Deere 4020 oil leak

[John Hall]

Found my leak--radiator. I would have bet money that it was oil--it was 
more yellow (not green) and felt pretty greasy. Long story short, top 
tank leaking at seam. The way we park the tractor it is headed slightly 
down hill (there is no flat land here--every shed is on a hillside). The 
clamp for the radiator is 1/2" or so from the core. So with the tank 
leaking up top on the front side, it drips onto the clamp, which runs on 
the bowl, which--well u get the idea. I tried to get up with the local 
semi-retired radiator repair guy, no luck--must be fishing at the coast. 
I said screw it and ordered one from Shoup. He had 11 in stock and sold 
34 last year, so the quality must be decent. There were a couple places 
a little cheaper online but I have had great results from Shoup, and 
shipping was free. I have no intention of ever letting this tractor go 
so I don't mind springing for a new radiator--still hurt the wallet though.

John Hall

On 3/7/2017 9:34 PM, John Hall wrote:
> You'd think an oil leak would be obvious regarding its source. Well I
> have one that isn't.  I'm trying to trace it down but so far no luck.
> Figured I would toss it out to the list to see if anyone here has ever
> ran across such. The worst part is you need to be familiar with this
> machine, maybe 4010, 3020's etc are built the same way. I'm getting
> hydraulic oil dripping off the bottom of the air filter. The oil appears
> to be getting on the clamp that holds the dust bowl on, running down and
> dripping off the bowl on to the area between the radiator and fuel tank,
> then running and dripping on a front tire (tricycle front end). I
> figured it was a line or something going to the oil cooler which is
> mounted right beside the air filter. Pulled the hood off and everything
> looks dry. Can't find a leak anywhere. Nothing appears to be spraying
> oil either. Its too clean to be engine oil, and does not appear to be
> diesel or anti-freeze. It leaked enough when I parked it last night that
> it ran all the way down the face of the tire. I left it in the shop
> tonight to see what is going on. Anyone ever heard of such a problem?
>
> John Hall
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