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    L3940 HST Overheating Problem

    I'll try & find one of those brushes. Here is some good news. The new inlet hose for the hyd pump showed up and it only took 20 mins to install it. Now the tractor runs like new :-) The temporary repair I made with Etherna Bond tape wasnt the best. Thanks to everyone on this group for the...
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    L3940 HST Overheating Problem

    Thanks for the inside information !! I've decided to leave the battery as is and use an idea similar to what you mentioned. It dosnt take long mowing a pasture till the area both in front and behind the transmission cooler is plugged up with debris. So some additional screening to keep the...
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    L3940 HST Overheating Problem

    Just a side note regarding the cooling for the Hydraulic fliud on this L HST series of hydro-static tractors: If you look at the front of the radiator where the tiny hydraulic fluid cooling fins are, you will notice that in front of the fins is the lead acid battery. The battery is almost...
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    L3940 HST Overheating Problem

    Thanks for the tips on the short 8" inlet hose that has fractured. Today I placed two layers of Etherna Bond tape around the area where the inlet hose fractured. And now the L3940HST works just fine. So the problem was the hydraulic pump was sucking air in the fractured hose on the low...
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    L3940 HST Overheating Problem

    After changing all the fluids including the anti freeze, engine oil, front axle oil, 11 gallons of Super UDT, both hydraulic filters. The only thing I found wrong is the short 8" length of large diameter rubber hose that feeds hydraulic oil to the pump on the side of the engine has tiny pin...
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    L3940 HST Overheating Problem

    When I was mowing the pasture in 100 degs temp, the radiator became plugged with debris and the tractor overheated. When I noticed the problem, I let the tractor idle for a half hour before shutting it down. But apparently it had been overheating for several hours before I caught it. The next...