D19d overheating

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   I was out running my D19d today and it started to overheat. The radiator was a little clogged so if figured that to be the problem so I cleaned it out and topped off the coolant.. When back to bush hogging and it overheated again right away. I then pulled the thermostat and it checked ok. Put it all back together and overheated again. I also tightened the fan belt because it was a little loose but that didn't help either.

My next thought is maybe the gauge is lying to me. With my temp gun on the head I'm reading around 180, the gauge is showing right at 220 (where the red starts), I don't know which one to believe. Are the AC gauges known to fail and read too high?

Any other suggestions as to why I'm overheating would be appreciated.

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m16ty Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 28 Jan 2011 Location: TN Points: 1474	Post Options Post Reply Quote m16ty Report Post Thanks(0) Quote Reply Topic: D19d overheating Posted: 08 Oct 2016 at 4:10pm
	I was out running my D19d today and it started to overheat. The radiator was a little clogged so if figured that to be the problem so I cleaned it out and topped off the coolant.. When back to bush hogging and it overheated again right away. I then pulled the thermostat and it checked ok. Put it all back together and overheated again. I also tightened the fan belt because it was a little loose but that didn't help either. My next thought is maybe the gauge is lying to me. With my temp gun on the head I'm reading around 180, the gauge is showing right at 220 (where the red starts), I don't know which one to believe. Are the AC gauges known to fail and read too high? Any other suggestions as to why I'm overheating would be appreciated.

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DougS Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 03 Nov 2011 Location: Iowa Points: 2490	Post Options Post Reply Quote DougS Report Post Thanks(0) Quote Reply Posted: 08 Oct 2016 at 4:12pm
	Is the water actually boiling and steaming from the cap? That's a true sign of overheating. If this was a sudden occurrence you may have a collapsed radiator hose.

MACK Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Nov 2009 Points: 7664	Post Options Post Reply Quote MACK Report Post Thanks(0) Quote Reply Posted: 08 Oct 2016 at 9:49pm
	If you checked temp. On hose, there could be that much difference. Best to check on thermostat housing below thermostat. I would guess your tractor gauge is bad. MACK

m16ty Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 28 Jan 2011 Location: TN Points: 1474	Post Options Post Reply Quote m16ty Report Post Thanks(0) Quote Reply Posted: 08 Oct 2016 at 11:42pm
	It did belch out a little water when I removed the cap but it wasn't much and it wasn't what I'd call boiling over when it got hot the first time. I could actually dip my finger into the radiator coolant for a very short period, while the gauge showed 220. That's what had me thinking that the thermostat wasn't letting the coolant circulate. A collapsed hose did cross my mind but they look ok from the outside and are fairly new. I did use the temp gun on the head right at the thermostat housing but I question the accuracy of those things sometimes, partly because you can't tell for sure exactly what area you are hitting in a congested area. It also just measures surface temp, which I'd assume would be several deg cooler than internal temp. I'm going to go to the parts store tomorrow and pick up a gauge and temporarily hook it up and see how it reads.

DiyDave Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: Gambrills, MD Points: 53557	Post Options Post Reply Quote DiyDave Report Post Thanks(0) Quote Reply Posted: 09 Oct 2016 at 6:29am
	I'd believe the IR temp gun. I've had gauges that read, all over the place. In my D-10 and 12, the gauges consistently read +40ºF over. May be because the sending bulbs are right next to the exhaust manifold. On the 19D, I'd be worried about blown HG's, they have a propensity to do that...

jaybmiller Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Greensville,Ont Points: 24420	Post Options Post Reply Quote jaybmiller Report Post Thanks(0) Quote Reply Posted: 09 Oct 2016 at 6:39am
	I'd remove rd cap, get he r good and warm then 'borrow' the wife's 'candy' thermometeror 'turkey' thermometer and check it that way. Have to agree the IR guns are bang on,but be nice to confirm with an 'old school' thermometer. Jay
	3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water

m16ty Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 28 Jan 2011 Location: TN Points: 1474	Post Options Post Reply Quote m16ty Report Post Thanks(0) Quote Reply Posted: 09 Oct 2016 at 6:24pm
	I went to fool with the tractor today and after it cooled off overnight, the gauge is still reading 160. I think I have a faulty gauge. I do think it got hot the first time and that must have screwed the gauge up for some reason. I'm going to order a new gauge and go from there.