I purchased a JD 332 with the yanmar diesel back in June and had nothing but issues with it since I got it. Mainly overheating and not wanting to cut with the deck lowered. After changing the fan belt (major job!), cleaned radiator and new cap, and replaced thermostat I was still having issues. After replacing the radiator cap I noticed some leaking on the top of the radiator. I ran out of patience and figured I either need to bring it somewhere and let someone with more time and knowledge to fix it or just give up and get something else which I really didn't want to do so I could avoid going into debt.
I decided it was worth it to fix her and I brought her to the dealer. The dealer replaced the radiator (crying still!) and it was not cheap! $800! - They said to have it rebuilt would cost around $600 due to it needing to be completely redone and there would be no warranty on it due to it being an outside provider doing the rebuild, waterpump, and they replaced the deck belt and some rear diff hoses (it was leaking).
After a month of waiting to get her back she's finally back and not overheating and the deck cuts in the down position now! All the issues appear to be fixed thank the lord!
Now to the oil pressure sensor. It appears to be leaking and it was definitely leaking before the dealer touched it. I tried to see if it was loose but its not loose and honestly I wouldn't be worried but its dripping right on the ground connection so if its an easy fix why not do it.
From the images does it appear that it needs to be replaced? I'm assuming its a wear part and could just be wore out and started to leak? I also attached a picture of the new radiator just since I spent $800 on it and had to show off what a new JD radiator looks like!