Losing coolant from radiator overflow

[Dmadison]

Tractor blew head gasket. Had coolant coming from overflow. Had head shaved and reworked, put on new head gasket, same problem. Put on new radiator cap and thermostat but that didn't help any. I am at a loss as what to do next.
try another head gasket I guess. Any ideas?

 

[Deere Dude]

What happened to me many moons ago was I torqued the head bolts down but there was some crud in the bottom of the bolt holes that wouldn't allow the head gasket to compress correctly... It was a car but maybe...

 

[SPIKER]

make model eng number etc,.?

Did ya torq from center out and did ya deck/clean the block too or just file it smooth? if you used the flat faced disk/die grinder that can cause you issues. Other things look for crack in head and block liner. Otherwise could be issues with the gasket it's self, one guy had same constant issues ended up getting a copper gasket and that fixed it.

Mark

 

[Dmadison]

make model eng number etc,.?

Did ya torq from center out and did ya deck/clean the block too or just file it smooth? if you used the flat faced disk/die grinder that can cause you issues. Other things look for crack in head and block liner. Otherwise could be issues with the gasket it's self, one guy had same constant issues ended up getting a copper gasket and that fixed it.

Mark

Yes torqued from inside out to 120 ft lbs. Cleaned block really good using really fine sandpaper. I would really prefer the copper gasket but don't think they are available anymore.

 

[Dmadison]

I can see that the water pump is circulating good but also see it bubbling in the radiator. Tractor is a Jinma 200 LE with a Laidong LL380 engine

 

[RonMar]

Maybe you have a crack somewhere...

 

[4570Man]

How did you "shave" the head? A machine like this is made for the task. The milling machine vice is not supposed to be there. I was using it to hold parts much smaller than heads or blocks.

 

[Dmadison]

How did you "shave" the head? A machine like this is made for the task. The milling machine vice is not supposed to be there. I was using it to hold parts much smaller than heads or blocks.

View attachment 440355

machine shop did the work.

 

[boggen]

i am way over my head here so. take it with a grain of salt...

do you have an "air lock" ? some folks have drained there antifreeze / water mixture. and when they went to go fill it up, they got an air lock in the system. i don't remember the details, but they either got unit on flat surface or had to angle front/back to get the air out.

have you double check your antifreeze / water mix... with a tester... to make sure you have correct mixture? they are relatively cheap and at most auto part stores.

have you removed thermostat and tested it in boiling water? who knows maybe factory defect.

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not a clue about machine you have....

does unit overheat just at idle? or are you running it hard?

have you double checked carb and adjusted it correctly? perhaps wrong fuel/air mixture causing extra heat.

 

[Affordable]

90 % of the time the overheating on these tractors is due to a radiator that is not clean, we have customers that brought us tractors telling us they just cleaned the radiator, when we showed them the dirt we got out they could not believe it

You must be able to see thru all the fins from top to bottom, if the battery is sitting in front of the radiator remove it to clean,we wash them out with a water hose then take a air hose to blow out the fins, sometimes it takes 2-3 times to get one clean

Tommy
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