D-14 Running Hot

Part Time Pete

Well-known Member
I've been having troubles with my D-14 running hot. I flushed it and put a new thermostat in it, but it still likes to run in the 200 degree range if you work it. I've heard that there's a 5 blade aftermarket fan available for them. Will this help and if so, where would I find one?
thanks
Pete
 
How did you flush it?? Are the fins of the radiator clean so you can see light threw the radiator?? After you flushed it did you back flush it with a garden hose?? And if you did back flush it did you do so at the radiator or by way of the block drain?/ Doing so by way of the block drain is the best way to do it. When I flush one I use vinegar and run it till good and hot then drain and back flush
 
I ran an old D 14 for years, if you have the cooling system right, it should not get hot, you have missed something somewhere!!!
(do not let this little motor get too hot or you will be in for an expensive rebuild.)

buy you one of those small hand held temp guns, that you shoot the red dot, it instantly gives you the temp of that spot. I think even Walmart has them, believe me, cheaper than a over heated motor.

when the tractor is at operation temp or hot as you say, with the radiator grill screen off shoot the red dot all around the front of the radiator,

most stopped up radiators will be clogged up in the center, so you should get cooler reading in the center of the radiator than on the side where the coolant is flowing.

at least try that. if no difference, then fill cold radiator with water holding your hand over the bottom hose opening, pull your hand back, the water should flow fast with full flow out of a fully open radiator. a stopped up radiator will flow slow and even gurgle some as the water comes out.

if all good, then you are on to bad thermostat, that could not be opening as it should, bad temp gauge that could be giving you bad readings,

using your new hand held temp gun, you can tell if its temp gauge is reading much hotter than the hand held gun.

I have even seen a water pump, not leaking, but shaft had come loose from impeller, just spinning and not pumping water, fins of water pump could be corroded off and not pumping water. with a good pump and open thermostat you should be able to see water movement when you look down into the radiator inlet hole.

good luck and let us know what you find wrong,
but do not ruin a good motor,
also have you washed out the radiator from the rear forward, they can become clogged with dirt and debris and seeds, :etc so you have no air flow.
 
I think a lot of the problem is the location of heat guage pickup.Its right on top of an exhaust port,Its naturaly going to be hotter there than in front or other side.I had the same problem put on a new radiator and 5 blade fan might have helped a little,but if you work it hard it will still run 200 or more,I have always read where the 14's had heat problems.I think it mostly in the location of heat sensor.I just run it a don't pay much attention to it.
 
Thanks for the replies guys,
I used Prestone fast flush - I filled it with the flush and worked it for a few hours, drained it, filled with fresh water and worked it again, then flushed it with a garden hose and filled with coolant. I didn't back flush the radiator though. I think my buddy has a temp sensor - I'll check the radiator with it and see what I find. It's gotten gradually worse over the last few years, so I'm guessing it's the radiator, but they're a little pricey so I don't want to replace it if it's not bad.
Pete
 
Over time and using tap water lime tends to build up in the block and radiator and then clogs things up. That is why I use vinegar as a flush since it will break down the lime. Then I rig up a way to hook a hose to the block drain and back flush it that way. Have an Oliver 77 that would over heat badly and did a vinegar flush a couple times and it has not over heated on me since and that was 10 plus years ago
 
I use straight vinegar no water or other such stuff. Fill the cooling system straight out of the jugs and run it.
 
It may take a couple of vinegar treatments to get it and a good hour of more of back flushing by way of the block drain. I had to flush my Oliver 77 at least twice to get it but once done it has not over heated since
 

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