My 2015 310L uses DEF. I was warned by the Deere mechanic to not mess with that system, as it was the only part of the 310 series that was problematic. He told me to not add a drop to the system, until it needed filling, and then to use a fresh, never-opened, recently purchased, jug to fill to the top.
-
Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
Deere 310L losing coolant.
- Thread starter emmett518
- Start date
Canadian_digger
Senior Member
This sticker is on all three. I have a 2016,2017 and 2018.
Final report.
Most of the hose clamps were loose, and leaking. Tightened every one.
With effort to break the bolts, got the thermostat cover off, and both thermostats looked good. Thought that I wasted $100 on new ones, and was going to leave the old ones in. Since I bought them, I decided to replace them. Also flushed the coolant, and replaced with new Deere Coolgard. As the guy at the dealership said, it took a bit more than 5 gallons. It's entirely possible that the old coolant was seven years old, so I'm happy I replaced it.
Upon starting, the engine reached 158 deg in 10 minutes. I'm not yet convinced that the new t-stats fixed the problem as it's 60 deg F today here in Mass, but it's looking good.
It will be nice to have heat again, and I get the engine will be happier too.
Most of the hose clamps were loose, and leaking. Tightened every one.
With effort to break the bolts, got the thermostat cover off, and both thermostats looked good. Thought that I wasted $100 on new ones, and was going to leave the old ones in. Since I bought them, I decided to replace them. Also flushed the coolant, and replaced with new Deere Coolgard. As the guy at the dealership said, it took a bit more than 5 gallons. It's entirely possible that the old coolant was seven years old, so I'm happy I replaced it.
Upon starting, the engine reached 158 deg in 10 minutes. I'm not yet convinced that the new t-stats fixed the problem as it's 60 deg F today here in Mass, but it's looking good.
It will be nice to have heat again, and I get the engine will be happier too.
colson04
Senior Member
Good to hear that resolved your heat issue. Coolant leaks are never fun, nor is a lack of heat.
When my brother was in high school, he had no heat in his car one winter and would drive around with a blanket in his lap for warmth. I came home from college for Christmas and found out what he was doing. A day of inspecting and wrenching and I found his water pump impeller was eroded away to a flat disc. Swapped it out and got his system bleed. He sorta had heat after that. I ended up back flushing his heater core and filled a bucket with sludge. He got enough heat to defrost windows and stay warm, but it was never right.
When my brother was in high school, he had no heat in his car one winter and would drive around with a blanket in his lap for warmth. I came home from college for Christmas and found out what he was doing. A day of inspecting and wrenching and I found his water pump impeller was eroded away to a flat disc. Swapped it out and got his system bleed. He sorta had heat after that. I ended up back flushing his heater core and filled a bucket with sludge. He got enough heat to defrost windows and stay warm, but it was never right.
Nige
Senior Member
Sounds like a good job you didn't. Try putting the old thermostats in a pan of water and slowly bring it to the boil. Do they both open correctly & completely.?