Hello - I have a 2004 X485 with about 680 hours on it. I have owned the tractor since new and have no real issues with it. That is until last fall I started to notice an antifreeze smell while cutting the grass and the overflow tank level was dropping. Not able to find any type of leak over the winter the next problem was reached after going to the garage and finding a pool of antifreeze on the ground. I could clearly see antifreeze and residue below the overflow tank vent and also antifreeze covered the radiator and was dripping heavily by the drain valve on the radiator.
The dealer picked it up and stated the water pump was leaking so that is where the smell was coming from. They stated that the pool of antifreeze along with the radiator covered in antifreeze was from a faulty radiator cap. They fixed both of those to bring it back to only have more antifreeze on the ground which clearly came from the overflow vent on the overflow tank. The dealer picked it back up (Same day it was delivered stating it was fixed) and said the system had air in the lines and it just burped causing the antifreeze to come out of the vent on the overflow tank. The also lowered the antifreeze level in the overflow tank to the low mark.
Fast forward a couple weeks and a couple hours of cutting grass and the level in the overflow tank dropped 3". The dealer picked it back up, did their tests and said the only thing they could find was a loose hose clamp. This is after they let the tractor idle putting about 5 hours on the clock and using a half tank of gas in it. They brought the tractor back.
Again fast forward about 3-4 hours of use cutting grass and once again the level in the overflow tank has dropped an inch during this time.
I spoke to the dealer yesterday and they will send a tech out this week to pressure test the system but I'm starting to hear over and over from them now that the level of the tank doesn't matter as long as there is antifreeze in the radiator. I disagree with this since I have owned the tractor since new and the level in the tank has always remained at the same level. At worse I would lose a 1/2" or so after putting 60-70 hours on during the summer/winter.
I will add the dealer has been great at stepping up to get it fixed but they are at a loss. They can find no leaks and state the pressure test is good.
Is this true the level in the overflow tank doesn't matter and losing an inch every 3-4 hours is nothing to worry about? The past typical pattern is that you see the level in the overflow tank go up when the tractor is warm but then when it cools down it returns to it's normal level.
The antifreeze level is set to the low mark on the overflow tank. Those that know what the overflow tank looks like towards the top of the tank there are two marks. One I assume from when it's hot and the other for when it's cold.
The temperature gauge on the tractor is where it always is so it's not running hot.
After each use I use a leaf blower and remove all the side screens and the screen in front of the radiator to blow out any grass etc.
We are now going on the 4th time this will be looked at in the past 3 months so I'm looking to get this resolved.
Thanks for your time