NDDan
Guest
When air flow gets low the oil temp rises. Might want to set valves and maybe even injecter job. Remove components from top of engine and do excellant job of soaking and washing out all passage ways threw heads. Depending where you took temp reading it may not be out of line. I would maybe double check other machines. If you took water manometer pressure reading you should have no less than 6 inches with hot oil and 2300 engine RPM. Cooling fan has fluid coupling but is basically locked out in combine applications. Fluid clutch is feed full pressure all the time so it basically runs at whatever speed relavant to engine RPM. I think I would remove sender and then reinstall. Check slide on wire to see it fits snug and look at wire to be double sure it isn't rubbing threw on injection line or something. Some senders have went bad or have become to sensative. This is a very sensative circuit so there is no room for poor connection. Temp runs close to setting off senser even when everything is right. I have installed many 6 or 7" pipes just ahead of air prescreen to vent off engine heat. This must of helped too for I only get a fraction of the head temp light bothering calls. I have vented crankcase breather into front turbo intake on many machines also. I will know prior to next season how much that helps valves maintain their settings. One must monitor hoses very well if venting into intake. So far so good on hoses. Gleaner vented blowby into intake when first starting to use the V8s but they had some bad rubber hoses that the oil ate up. I believe the newer hoses corrected the problem but they took no chance and vented to outside. We'll see how it goes. Have a good one.