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Harry Ferguson Tractors Discussion Forum

To30 questions...new purchase. Overheating and other issues

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07-16-2020 19:09:54

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newbie here. Don't judge. First tractor. Im unclear on the year. Where can I find this? I have a picture posted of plate on engine but no other plates available I see anywhere. Anywho. I changed the oil before. Water present. And I ran her a few mins but overheated...today heres what happened. Yes I tested low compression on two cylinders. Absolutely 0 psi. Others were solid.

I wss hoping my low compression was just a stuck valve. Popped the valve covers and it wss rusty. Cleaned what I could. Dumped atf. Drained oil several minutes later...large amount of water in oil "again" 2nd oil change since I've had it. She over heats big time. I tore it apart hoping it was thermostat. But apparently it's been removed...so I filled with water. Operated wster pump by hand. No change in flow on open end of water pump. So the impeller is probably rusted crumbs. So either wster pump failed and they ran it stupid hot to make head gasket failure. Or its just head gasket failure. I ran 15w40 shell Rotella.

Also is the trans and hydraulic filler by the gear shifter? Or different area? I didnt look everywhere. I popped this open and bone dry. So I filled with whatever I had laying around. Just to get something inside while she shits. Im a truck driver so I'm not around much. Fyi I'm in Texas so now worried about cold weather and thick oil.

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07-17-2020 12:19:48

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 Re: To30 questions...new purchase. Overheating and other issues in reply to 3000gtman, 07-16-2020 19:09:54  
It is for sure getting coolant in the oil, so before taking anything apart, drop the oil pan, fill the radiator and watch where it comes down.

Could be the head gasket, could be orings at the bottom of the cylinder liners, could be the block cracked. Need to find out before taking the head off.

If the block and orings look good, it's probably the head gasket.

Once the head is off, if you're not replacing the orings, be sure to bolt the liners down with a couple bolts and washers. The liners just sit in the block, and if one rides up even slightly, it will break the oring seal and they will have to come out and be resealed, quite a job!

I'm sure as bad as the engine is running it's hard to tell much about it, but take a good look before disassembling it. How is the warm oil pressure? Any knocks, blow-by? How is the rest of the tractor? Clutch, transmission, brakes, tires, front end? Try to get an overall picture. If there are other problems, best to find them now, get an idea of the cost. Nothing worse than getting the engine back together only to find another major problem and have to go back in.

As for the transmission/differential oil, the proper level is to the bottom of the round inspection covers below the seat. One should have a dip stick. Chances are there is water in the cases if it's been outside. It gets in around a bad shifter boot. There are 2 drain plugs. You don't want to overfill it, it will get on the clutch and brake shoes. The original oil was 90w mineral oil. The popular replacement is 15w40 diesel engine oil. That is a common gear case, all fill through the plug on top, by the shifter. The big square cover on bottom, that is not a cover, it's the bottom of the hydraulic pump. Don't take the bolts out unless you're taking the pump out. There is more to it than just removing the bolts.

A shop manual will be a valuable investment.

Let us know how it goes!

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07-16-2020 21:01:27

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 Re: To30 questions...new purchase. Overheating and othe in reply to 3000gtman, 07-16-2020 19:09:54  
Sounds like a head gasket (at least) to me. These blocks have a reputation for cracking between the cylinders which allows coolant into the oil, but your zero compression on two (adjacent?) cylinders is very likely the head gasket which also can allow coolant into the oil. Time to open a can of worms and pull the head IMO. Get the I&T shop manual (available from this site) and follow the step by step instructions for disassembly and reassembly. I'd probably drop the pan also and inspect the block for cracks between the cylinders on the lower end. There may be no place to stop...

There should be a plate riveted to the dash with a serial number which tells a lot about the machine. They do go missing. A TO-30 will have a screened air intake on the right side of the dash and a Z129 engine.

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07-16-2020 19:44:57

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 Re: To30 questions...new purchase. Overheating and other issues in reply to 3000gtman, 07-16-2020 19:09:54  
Sounds like blowed head gasket and a block that might need pinning. Pinning the block is easy enough. I had one once. Ran with no problems. two 5/15 bolts drilled through the block between #2 and #3 cylinder. Nuts on other side, one towards the top and the other at the bottom. New head gasket installed with cup (drum brake wheel bearing fiber) grease as per the OEM instruction. Grease allows the gasket to slide into place and glues it down tighter than a bug on the windshield in about 30 minutes without having to start the engine.

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07-16-2020 20:30:02

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 Re: To30 questions...new purchase. Overheating and other issues in reply to Bruce(OR), 07-16-2020 19:44:57  
I appreciate the info. Im insure of pinning tho. What is the benefit?

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07-16-2020 20:50:15

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 Re: To30 questions...new purchase. Overheating and other issues in reply to 3000gtman, 07-16-2020 20:30:02  
Like your truck engine is, this engine is also a wet sleeve operation. Once you open it up, you should see a bunch of broken, cracked support webs. It is also possible that the "O" rings at the bottom of the sleeves are also possibly leaking. Anyway you slice it, you have an engine R&R coming up. KN (?) Block seal can also be your friend. Once you put a 'stat in it, drill a 1/16" air bleed hole in the flat side to allow air to bleed off during initial running. That bleed hole also helps to diminish temp spikes as the 'stat opens and closes during engine operation in the future. If you have a clean record with your Class "A" CDL, Walmart is hiring at about $90K a year. Weekends off. My Class "B" does not desire to play. I am done. 3000GT, is that the Mitsubishi?

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07-16-2020 21:59:52

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 Re: To30 questions...new purchase. Overheating and other issues in reply to Bruce(OR), 07-16-2020 20:50:15  
Yes Mitsubishi 3000gt..big fan haha..currently have 2 but ive had over 10..i know Walmart is hiring and good pay but not for me..i was doing local work but went back over the road.

As far as the plate goes its missing. But she does have the screen oiled air intake or whatever the correct word is. Id just like to know what year for sure.

I don't recall which cylinders were at 0 psi I just remember it was 0. I want to say its the last 2 towards the driver's seat. Ill get the manual so I can properly name everything haha

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07-17-2020 08:30:50

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 Re: To30 questions...new purchase. Overheating and other issues in reply to 3000gtman, 07-16-2020 21:59:52  
3000GT is a decent looking car, just needs a bigger engine. I frustrated an owner of a 3000GT once upon a time with my 4.0 Jeep. Oops. The screen on the dash is typical of the TO-30. I believe you also should have an external oil filter. That TO-30 does have a decent amount of grunt power and can be fun to play with. My wife has a TO-20 that I am going to switch over to 8N hydraulics with built in position control. I do believe the TO-20 and 30 share the same hydraulics so the same change over could be done on your machine as well. You just need to trade a GT for an 8N parts machine...
Yep. You have a tear down coming. This site sells engine kits cheap enough. I did the wife's TO-20 about 77 hours ago. I also installed an electric hour meter along with a few other toys.
OTR has it's rewards and in town driving can be a very large PITA. Don't blame you too much.
Catch you later!!

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07-17-2020 09:49:44

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 Re: To30 questions...new purchase. Overheating and other issues in reply to Bruce(OR), 07-17-2020 08:30:50  
I love my 3000gt. She's in her natural habit on Jack stands for 3 years now haha. Very expensive to get running perfect. The 3000gt sl model is slow but the vr4 is decent. Im thinking of buying a modified one from my friend but strictly track only car. I did just buy a used audi a8 as well. Quick but heavy. I got some parts already from this site but I will buy more soon..im leaving Monday again so no point in doing it now. Yes it has external oil filter.

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07-18-2020 05:46:11

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 Re: To30 questions...new purchase. Overheating and other issues in reply to 3000gtman, 07-17-2020 09:49:44  
Audi. Every engine has a turbo or maybe two. Without the turbo, they might be as fast as a Volvo. Volvo going all electric next year.
I might go electric. When it is voice activated self driving and can take itself to the shop for repair work. No? That day is not too far off. California going to all electric big rigs in 2050? Good luck with that. Audi A8 is not a bad looking machine and they have some very nice looking and running machines out there. I seem to remember back in the day when Audi gave out free maintenance for a few years, then folded shop and went back home. Now they have come back again and hopefully stay around for some time. Time to get going. Sun is about up this morning and as the man said, "Your burning daylight." Catch you later, stay safe on the road.

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