Gator 6x4 Overheating problem: John Deere Gator  -- Utility ATV Discussion Forum and Review Gator 6x4 Overheating problem: John Deere Gator -- Utility ATV Discussion Forum

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 05-29-2007, 23:34 Post: 142584
bogantz



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 Gator 6x4 Overheating problem

My 6x4 is overheating. Radiator is full. Decided to replace the thermostat... Still overheating So Sad Decided it must be the water pump as the radiator never gets warm (hence pump not pumping the hot water when thermostat opens)... Water pump looks/operates fine...
Not much else to fix/replace.

Anyone have an idea?






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 06-25-2007, 09:27 Post: 143183
coach20wins



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 Gator 6x4 Overheating problem

Yes, please, send some help our way. I have the same problem. Haven't taken it to the dealer yet. Trying to make it through myself.
Coach






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 06-25-2007, 09:33 Post: 143188
kthompson

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 Gator 6x4 Overheating problem

Could the lower hose be collapsing when pump is pumping? Have you tried flushing the cooling system? Have seen tractor with cool radiator due to it being clogged. kt






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 06-26-2007, 16:55 Post: 143234
jbjpam



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 Gator 6x4 Overheating problem

The problem is the engine block is not completely full and the water is not getting to the pump yet.
Here is the solution.
At the top of the engine near the carburator is a small bolt.
12mm wrench I think. Remove the screw.
With the engine running, slowly fill the the hole with fluid. An old oil bottle with a pour spout works best. I had to fill mine a few times after running it for a while until the system is full. Never had a problem after that.
Good luck.






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 10-29-2007, 16:51 Post: 147512
coach20wins



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 Gator 6x4 Overheating problem

Thanks for the help. My prolem is the fan won't kick in. Had it to the dealer in July and they replaced a switch or relay to the tune of $400. Now, it's overheating again. Dealer will repair at his cost, so thank goodness they stand behind it. I'll show them the water thing, but??
Coach






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 03-09-2011, 20:22 Post: 177293
m_pact



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 Gator 6x4 Overheating problem

Hello! i have a 6x4 that is overheating too! I have "drained the air" out of the block several times and still havent resolved my issue. there is a rubber line running from my water pump to the other side of the engine by the carb. my question is this. is this a vaccuum control line or is water supposed to flow through it? i took it off at the water pump side and antifreeze shot out for a second. I have no antifreeze in the oil. I replaced the thermastat. when i pull the "plug" by the carb antifreeze shoots everywhere so i know my pump is working. my radiator itself doesnt warm up. please advise....Thanks for helping me!!!!






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 03-09-2011, 23:03 Post: 177298
treeman

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 Gator 6x4 Overheating problem

Did the thermostat have a small vent hole through the flange? Some thermostats come with the hole and should be mounted with the hole in the top most position. Some people will drill their own hole to help even out the heat cycles. Some engines will nearly overheat before the stat opens because the stat is in a cool zone or a bubble of air is behind it. With the hole, you won't get the temp spikes if this is your problem. A small engine might have a 1/16" hole and a v8 will have a 1/8".






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 04-08-2012, 05:45 Post: 183064
Chamberlain1



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 Gator 6x4 Overheating problem

Hi my gator is over heating the hoses get hot but the the return hose clappses the fan dosnt turn on wot can I do






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 04-08-2012, 08:08 Post: 183065
Chamberlain1



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 Gator 6x4 Overheating problem

Hi my gator is over heating the hoses get hot but the the return hose clappses the fan dosnt turn on wot can I do






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 07-04-2014, 19:26 Post: 190635
sharkbait21



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 Gator 6x4 Overheating problem

have a John Deere XUV 4 X 4 Diesel Gator.
The first few years the little Kawasaki engine performed flawlessly and the engine still starts and gives no trouble.
Then, the fan would kick on and the overheat warning light would come on followed by a loss of power and the engine dying until it cooled off. The next annual dealer service included their fix for the OVERHEATING PROBLEM. They changed the thermostat and replaced the water pump. That did not fix the problem. I took the machine back to them and the fix this time was: COULD NOT DUPLICATE THE PROBLEM.
After reading some on line fixes, I tried the air relief at the bolt behind the carburetor. This would help for about a week and then the problem would repeat even on a cold winter day. I tried several other John Deere dealers for a solution. The best they could come up with was there was air getting into the cooling system some way. I should look for a loose hose connection or leaking radiator. The Gator is parked on a cement slab and no leaking was ever detected. All of the hoses looked to be in great shape.
I finally found an old retired small engine repair mechanic and he guaranteed he would fix the problem for me. He did the usual air bleed at the engine (like I had done many times) and showed me how to tell of the water was circulating: “stand at the left front of the Gator with the hood open after the Gator has been warmed up. The with your hand facing forward slide you arm down until you can feel the bottom radiator hose”. If the hose is warm, the cooling fluid is circulating. If the hose is not warm then the water is not circulating. I figured the problem was fixed. But, the Gator overheated again as soon as I got it home. This overheating was occurring within a mile of travel.
When I talked to the shade tree mechanic again, he asked me if I was checking the cooling level by opening the radiator’s cap. I SAID YES. THAT IS YOUR PROBLEM HE SAID. EVERY TIME YOU OPEN THE RADIATOR TO LOOK IN, YOU LET IN A SLUG OF AIR. He suggested I buy a new radiator cap and once again bleed the air at the engine. Then NEVER OPEN THE RADIATOR CAP UNLESS YOU ARE CHANGING THE FLUID.

His approved method of checking the cooling fluid is to look at the overflow tank. Keep the fluid between the two lines and make sure the rubber transfer hose is not sticking to the bottom of the tank and preventing fluid from sucking back into the system from the overflow tank. I replace the radiator cap and once again bleed the air out of the system. I made sure the overflow tank was between the lines and the return line was an inch off of the bottom of the tank.

I HAVE HAD NO FURTHER PROBLEMS FOR THE LAST SIX MONTHS.

Happy Happy Happy






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Gator Forum

Thread 142584 Filter by Poster:
bogantz 1 | Chamberlain1 2 | coach20wins 2 | jbjpam 1 | kthompson 1 | m_pact 1 | sharkbait21 1 | spyder 1 | treeman 1 |




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