1981 Taishan T-50

/ 1981 Taishan T-50 #1  

skipp44

New member
Joined
Aug 6, 2020
Messages
13
Tractor
Taishan T-50, Challenger 55, Kubota L3400
Hello all, new member here asking for ANY help finding parts. It is one of the first Chinese tractors brought into US in 1981. Since the factories and companies have changed so much, the dealers I have talked to can't or won't help. It has been and still is a hard working farm tractor that's starting to need parts.

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/ 1981 Taishan T-50 #3  
Welcome to the forum, that looks like a pretty decent tractor. I am of no help regarding parts, perhaps others can help. It's very unfortunate that some of these products are marketed here without setting up a spare parts system. It may be a knockoff of a more common brand, hopefully for you a close enough copy for parts interchangability.
 
/ 1981 Taishan T-50 #4  
/ 1981 Taishan T-50 #7  
POS burn it now

WoW I take it your Landini has already delivered Over 39 years of service.??

Not a very helpful post to a new member.

Some buyers of new tractors on this site have run into problems that require a stay at the dealers shop with less than 50 hours on their machines. His tractor has done decades of work already.

imo that Taishan has earned it's keep, by the OP's statement


It has been and still is a hard working farm tractor

Welcome to TBN Skipp44

Agree with other members list some parts source suggestions.

Farm Boys may also have insight / ideas for parts

Home - Farm Boy's Tractor Parts
 
/ 1981 Taishan T-50
  • Thread Starter
#8  
LOL I think Martyman just said what most of us have thought, at one time or another, while walking home from a piece of equipment left broke in the field!
 
/ 1981 Taishan T-50
  • Thread Starter
#9  
Thanks to everyone for defending the old girl! I have talked to all the places suggested and Ranch Hand tried too, who I am not to far from.
Frustrated, but I understand, because I found a 1983 artical in "Farm Show" magazine about my tractor, before trade was really open.
 
/ 1981 Taishan T-50 #10  
The "495" engine model indicates that it is 4 cylinder with a 95 mm bore, which doesn't really mean too much. But, speculating that it is a TY-495 adds to the flavor. So, then it could be a Jiangdong (JD) engine. Look for a diamond with JD inside inside it on the left hand side of the block. Most parts for these engines are plentiful because of the commonality with the TY-395 engines.
 
/ 1981 Taishan T-50
  • Thread Starter
#11  
The cast emblem on the left side is a circle with a w and a big T going through both. (sort of)
Mark at Tytan said he was pretty sure it was a old 504 engine, but was not sure what the new engine equal is.
 
/ 1981 Taishan T-50
  • Thread Starter
#12  
Being new here, I'm now sure if I should start a new thread or continue with the existing problem that I need parts for.
Right now I need a fuel injector pump or rebuild. But I can't figure out the real problem.....High Oil Temperature! It has Good oil pressure, Good water temperature, Good water flow through radiator, and it takes a couple hours on a hot day to creap up above normal.
 
/ 1981 Taishan T-50 #13  
How do you know your oil temp is high? Oil temp gauge? What is your oil temp, and what oil are you using? What is your "good" coolant temp and oil pressure specifically? Temperature creep is usually due to one of several things, or a combination thereof.

1) Radiator core not allowing proper air flow - blow out core with compressed air from engine side. Check by shining a light through it. Some people, including myself, install furnace filter media in front of the radiator to help prevent clogging. Change as required.

2) Dirty cooling system. A thorough chemical flush, twice (wash, rinse, repeat).

3) Faulty thermostat. Not opening fully.

4) Loose fan belt.

5) Coolant pump impeller eroded causing cavitation due to improper coolant. Air in coolant creates pockets around cylinder liners. Install a coolant recovery system and keep the radiator full of the proper coolant. DO NOT USE PLAIN WATER.

6) Early injector timing / clogged injectors.

7) Dirty air cleaner. Black exhaust smoke.

8) Engine lugging (overloading). Defined as the engine's inability to accelerate under load.
 
/ 1981 Taishan T-50 #14  
Hey Skipp, that detailed info is necessary to help you isolate your issues and alleviate as much guesswork and wives tales as possible.
 
/ 1981 Taishan T-50
  • Thread Starter
#15  
Not leaving you bob! Making hay in 95 degs..... half dead.
This has been going on a couple years now. So I have addressed many of your points. It has a oil temp, water temp, and oil pressure gauge. 15w40 winter 20w50 summer ( southern Virginia)

1) Radiator core is kept clean, I use a piece of 1/2 in. copper pipe with 1mm holes drilled to jet spray at 90 deg. attached to a water hose. Slides right in between engine and fan, also great for cleaning all the other nooks and crannies on all the equipment and farm for that matter.

2)Clean and Full flow through system ( see other points)

3)Tried a couple avalable ones that fit and now no thermostat in it.

4) nope

5)Had pump rebuilt by a good shop when this first started. Tried 100% coolant through plain water, no difference so now back at jug reccomended %.
The cooling system seems to be working fine, can see full pipe flow coming into the radiator, and even when hot you can still put your finger in the coolant ( not very long) but it won't scald you.
The actual temperatures on the gauges I'm not sure, they are old and hard to read, but have always worked fine using the middle of the gauge as "normal operating" measurement.
The "lugging" or when she seems to working to hard is when the oil temperature gauge is getting over to the 3/4 side of the gauge. The oil pressure stays in the middle? I thought when the oil heats up it thins and you would have higher pressure. LOL when it is idling hot you can put your finger in the radiator but you don't want to do it from the left side because that puts you near the hot injector pump area!!

I have the side ports off and taking out the oil pump now, I may as well take off the head and check for a clog in the block. If I can't find parts like a fuel injector or oil pump for it, whats the difference not being able to find a head gasket?

Got to go! NEED another beer and SLEEP!
 
/ 1981 Taishan T-50 #16  
Is the oil temperature gauge mechanical or electrical?
Have you been able to confirm the accuracy of the gauge?
Since the engine seems to be functioning just fine it leaves the gauge as suspect although I know of no failure modes that would cause your symptoms without seeing other indications of error.
Perhaps if you have an infrared thermometer (temp gun) you could temp the outside of the oil pan at various gauge readings and see if the oil temp is really changing or if it is just the reading that changes. This won't be 100% accurate but it may provide some more clues about what is going on.
 
/ 1981 Taishan T-50 #17  
I presume that your temp gauges read in centigrade (C°) and pressure gauges read in kilopascal (kPa). These can easily be converted to Fahrenheit and PSI. Anyway, I see your problem(s).

1) No thermostat. Coolant doesn't spend enough time in residence in the radiator core to transfer heat efficiently, and eventually becomes overwhelmed. Shooting delta T's with a temp gun will prove this. Post a pic of your original thermostat with measurements and I'll try to match it. You REALLY do need one. Seen this scenario many times.

2) Lugging. Exacerbates #1. Yeah, that's asking for it. Just don't do it. Select a lower gear ratio.

You're running different viscosity oils summer and winter. The engine must be really tired to do that. Assuming that you are using a quality motor oil that at least meets API CH-4 standards, it's good for around 220°F before the viscosity begins to drop, and you lose oil pressure. So, if your oil pressure isn't dropping, your oil isn't too hot.
 
/ 1981 Taishan T-50
  • Thread Starter
#19  
Nope! Tractor in boxes. Fall is very busy on the farm and when we try to get the pay check to pay for the tractor parts and taxes.
 

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