Over heating te20

srimmer

New User
can u help I recently bought a te20. Just for my life style block. She will tick over no problems. But after about 35mins of harrowing a 3 Harrow set up. She started to over heat steam and water from the over flow pipe on rad let it cool down then she sweet for another 35 mins of farrowing. So I looked in rad cap there was a few little bubbles when ticking over even revved hard a few bubbles did not get more or over flow out of rad so I looked at thermostat there was not one so took rad of to clean there seems to be a good flow through it but I can still see a few bits of dirt in there through the cap The water pump looks good to u can see it flowing in rad. I had it filled about 1inch from cap? should I put a new rad on and fit a thermostat not to sure how to tackle this would a thermostat help control the heat better or was it removed for a reason. any help would be grate thanks Steve
 

You have established there is NO Thermostat installed....why no Thermostat?

Thermostats do a number of valuable things:

(1) keep Engine operating at optimum efficiency temperature:

(2) Controls flow of coolant so as latent heat can transfer into coolant....to be exchanged at Radiator:

Very questionable to hear of NO Thermostat!

You commented there are BUBBLES in the Coolant:

If the tractor was mine I would Install a Thermostat (in the proper orientation):

Service manual suggests 171 F.

Have Radiator Cleaned /pressure tested at Rad. Shop......I just had a MF FE 35 rad serviced:

Make sure FAN BELT is TIGHT and BELT is NOT bottomed out in bottom of "V" Grooves on pulleys:

As Rad is off, remove WATER PUMP and check Impeller, verify Impeller is secure to shaft....Install a NEW gasket between water pump and Engine Block:

Check that FAN is INSTALLED proper orientation:

Fans usually draw air in through the front of the Rad, air exits toward engine:

Install new rad Cap:

Added 50/50 Water Glycol based Antifreeze:

Start tractor up:
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I would try a thermostat first. But chances are it was removed in an attempt to stop the overheating.

As for the radiator, if it is a factory radiator, hang on to it as long as you can! Much better quality than the aftermarkets. That you can see coolant circulating is a good sign the radiator is not fully clogged. A good test, once a thermostat is in, run it up to operating temperature. Once the thermostat opens, you should feel warm air coming through the radiator. Pull the front grill off, feel the radiator. It should be equally warm across the top, gradually cooler to the bottom. If there are cold spots, that part is clogged. if it is clogged, take it to a real radiator shop, one that does truck and heavy equipment radiators. They can try to clean it, or recore it. That will cost more that na aftermarket, but be better in the long run.

Sad to say, but most mystery overheating causes turn out to be a leaking head gasket. Some symptoms are pressurizing and blowing steam out the overflow, even before the engine actually overheats. Mystery coolant loss with no apparent leaks. Steam out the exhaust, even on a warm day. Intermittent misfire, especially on cold start up. Water condensation under the oil cap, on the dipstick, water in the oil. A simple, but not always reliable test is to pressure up the cooling system, let it sit overnight, pull the spark plugs, crank it through and watch for water to blow out a cylinder.

A sure test though is to use a "combustion gas leak detector". It samples the air on top of the radiator for combustion gasses. If the head is leaking, this test will detect it. You can but a kit, or find a shop you can borrow one from or take the tractor in for testing.
Leak Detector
 
thanks for all your help I have really cleaned the rad and when I put hose through comes gushing out bottom there still seems to be a few bits of manure in it I also cleaned out block by taking of block tap and hosed it through good there. So I am going to put a thermostat back in I am at 2 minds to get another rad as I could keep my old one as a spare then I know we all sweet there. Regards the blown head gasket is that an easy job. Remember I have no experience only what I read Am I starting right with the right process. Cheers again Steve
 
First off, tell us where you are. If you are in Oz or somewhere it never freezes out, it might be just plain water, instead of 'antifreeze/summer coolant'. The coolant part brings the boiling temp well over 212 F. A half hour discing heavy ground in a hot sun can get anything filled with plain H2O to the boiling point.
 
Hi I live in New Zealand on the South Island. Place called Oxford. What do u think of a product u can put in to repair a cracked head or gasket
?
 
"What do u think of a product u can put in to repair a cracked head or gasket ?"

Nope, don't do it! No stop leak product can withstand the pressures of a combustion chamber.

Waste of money, clog the radiator.
 
(quoted from post at 03:27:20 04/17/17)
Waste of money, clog the radiator.

Couldn't agree more , see this .

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Sometimes the head is just loose and tightening it to specification is all that is needed . You do need a special ' obstruction spanner ' to do it easily though .

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So you are up near Arthur's Pass? So there must be antifreeze in there. If you had a bad head gasket, it would be gurguling soon as it warmed up. A dodgy pump can make things act like that tho. I had a Dodge V6 who's vanes were worn out, didn't leak, just never cooled off and made millions of tiny bubbles. If you need to check that out, i believe there are reasonable kits for the 20C pumps, and have the radiator 'steamed' and checked by a pro, then pour in a new rich antifreeze. She'll be right. That is a beast of an engine, one of the pom's best inventions.
 
Does your tractor have a radiator shroud or fan shroud,

Many of the older tractors, sometimes these are taken off during a rebuild or radiator service,

I think they are important as they direct the air through the radiator, not around the radiator,

At least check it out,
 
Does your tractor have a radiator shroud or fan shroud,

Many of the older tractors, sometimes these are taken off during a rebuild or radiator service,

I think they are important as they direct the air through the radiator, not around the radiator,

At least check it out,
 
Thanks everyone for your help. So I got a new thermostat today and gasket and I taking the rad to get checked tomorrow. I was going to order a gasket set do u know if the water pump gasket comes in the set. As I have noticed bubbling in the rad and some times it can be a bit tricky to start seems to sound like it miss fires like a doggy spark plug ? Like some one mentioned But then goes good There has never been water in oil or under the oil cap that I have noticed I think I would sooner do the head gasket as I feel why was the thermostat removed ? do u think a head gasket will sort it Thanks again Steve
 
If you remove the head on your TEA-20 do not for any reason turn the crankshaft with the head REMOVED! The LINERS shall leak coolant into the OIL PAN.....the liners are not sealed with O-RINGS....a flat narrow gasket at the base of the liner. See picture an engine...fresh overhaul. I never turn the Crankshaft on a used / ran engine with the head removed.
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hi thanks John. I have fitted new thermostat tomorrow I am fitting a new water pump and fan belt ( how do u now when tight enough the belt ) then hopefully the rad will be ready to pick up for weakend. They giving it a look at and flush make sure it all good then I will replace water and coolent then fire it up and see if it over heates If so I will then look at the head gasket. Is this what u would do . Cheers Steve
 
hi guys have taken of water pump there is no noise when I spin it or movement no sure what else to look for but there was no gasket ? Should there be one. Cheers steve
 
Yes gasket # 53:

I tighten the FAN belt so as there is 3/8" deflection between Dyno. and water pump pulley mid span:
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(quoted from post at 06:36:22 04/20/17) Yes gasket # 53:

I tighten the FAN belt so as there is 3/8" deflection between Dyno. and water pump pulley mid span:
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Thanks guys today I put the rad back on new radatior cap fan belt put thermostat other day and checked out water pump. It never over heated. Thanks think it all sorted could not have done it with out your help cheers everyone
 

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