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International TD 18 A Story

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Mark

11-15-2002 15:48:16




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I have a small ranch in Texas and was looking for an inexpensive dozer to do some fence line work, some clearing and maybe a pond or two. I came across this TD 18 A that had an undercarriage that look fairly good - pins not turn etc. The owner had put a new set of heads on the engine and use it about an hour when he notice lost of power, dropping oil pressure, and the engine started to get hot. He shut it down and bought a D6 Cat. He told me he thought the problem was a spun main bearing. I check the oil filter thinking I would see metal and found none. I pulled the oil pan and there was no water in the oil, and more importantly no metal. The bottom looked great like the bottom was just gone through. I started looking at other parts of the engine and couldn't find anything wrong. I opened the valve cover and found the valve adjustment to be way off. Some of the clearances had about 3/8's of an inch. Right now I have the carb and the starter off. I am rebuilding the carb - leaked gas, and the starter bendix spring is broker (dozer was set up for 24V and this is a 12V starter - maybe why spring broke). Once I have the starter installed, I plan to adjust valves to .020 (cold), put the carb on, and try starting it. So, what do you think - a spun bearing or the valve adjustment. I'll let you know!

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MADDOG

11-29-2002 12:28:22




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 Re: International TD 18 A Story in reply to Mark, 11-15-2002 15:48:16  
IF the valves are that far out of adjustment; then I would suspect the whole head replacement
job as being "Substandard"..Pull the heads and VERY CAREFULLY check and see if ALL the WATER jacket holes line up correctly. It's possible that the WRONG head gaskets were used or the gaskets were installed UPSIDE DOWN..



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Stan

11-19-2002 11:34:04




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 Re: International TD 18 A Story in reply to Mark, 11-15-2002 15:48:16  
I had My A/C did the same thing. I was doing some discing and the motor lost power and quit. I stopped and let it cool and it restarted. The same thing happened a few weeks later. I removed the pan inspection plate and found netal filings, not babbett. I tore the engine down and fond one of the pistons had seased causing some scoring to the wall. I honed the cylinder and put it back together, and it has been ok ever since. that was a couple years back. I never did find out the cause of the problem. The only thing I have done different was go back to single wt oil. The motor had a lot of hours on it before the problem so I know it was not set up too tight. I would be interested to know what you found.

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Chris Brown

11-18-2002 16:29:47




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 Re: International TD 18 A Story in reply to Mark, 11-15-2002 15:48:16  
ocaionally you can get a socket on the generator or alternator nut and turn the engine



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Bob/Ont

11-15-2002 15:58:50




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 Re: International TD 18 A Story in reply to Mark, 11-15-2002 15:48:16  
Mark, can you bar the engine over now and does it turn freely and bounce back against compression? I don't think the 24v would hurt the 12v starter, starters love volts and lots of them.
Later Bob



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Bob/Ont

11-15-2002 17:50:34




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 Re: Re: International TD 18 A Story in reply to Bob/Ont, 11-15-2002 15:58:50  
I should have said more, take all the loose push rods out if you can and check that they aren't bent. If they are bent, you need to find out why. Look at all the valves when they are closed and see if they are all coming up to the same heigth, compare intakes to each other and exhaust to each other, as the two might be of different heights. Then pry them open and see that they are free, some will hit piston tops and you need to turn the engine a bit for that.
Later Bob

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Mark

11-16-2002 07:59:35




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 Re: Re: Re: International TD 18 A Story in reply to Bob/Ont, 11-15-2002 17:50:34  
Bob, thanks for your responce. I have never tried to turn to motor. With the starter out I can see the flywheel, so I guess my question would be, how do you "bar" the motor. I tried moving the fly wheel with a big screwdriver and couldn't get a good enough grip, and there is no way to put a tool on the front pully. Is there a special place that I don't know about where you "bar the motor". Thanks again, Mark

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Bob/Ont

11-16-2002 09:27:52




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 Re: Re: Re: Re: International TD 18 A Story in reply to Mark, 11-16-2002 07:59:35  
Mark, get a prybar that has an end like a bent screw driver and try what you did again or use a round bar in the U joint with the flywheel clutch engaged and the trans in neutral. I assume that your tractor is direct drive not power shift. Hope this helps you,
Later Bob



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