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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

TD-9 Questions

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Greg

11-03-2003 09:11:00

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I recently traded for a TD-9 and had a few questions. The oil pan gasket leaks pretty bad, (1gal/4 hours use). Pulled the skid pan and can get to all the bolts but maybe two. The suspension system runs right over the back of the pan. Any suggestions? Also, I have read all the posts on starting and stopping the gas/diesel 335ci engine. Normally let it cool some on low throttle diesel, switch to gas to finish for some more cool down, then back to diesel (no throttle) and let it stall out in the diesel mode. The other day I had followed this sequence but then needed to move the dozer, without thinking, I pulled the starter in the diesel mode, the engine temp was still around 140, and she fired right up..... ..... .should this practice be avoided?? Any insight into these two questions will be most appreciated, thanks, Greg.

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Jim Presley

11-05-2003 18:17:55

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Re: TD-9 Questions in reply to Greg, 11-03-2003 09:11:00

Alot of that has to do with the engine running at the higher end of the scale in temp after it has been working hard. The diesel likes about 140 degrees to start, and if the motor is around 180 degrees or less, there should be no problem with the head. If you are working it hard, and it's hot out, shutting down at 190 - 200 degrees engine temp will cause it grief at some point. The water capacity on these was just barely enough. That's why you see so many comments on keeping the fan belt adjusted correctly, and some that had extra tanks put on them to continuously move cooled water through them.

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Greg

11-06-2003 05:28:10

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Re: Re: TD-9 Questions in reply to Jim Presley, 11-05-2003 18:17:55

Thanks Jim, mine never gets much above 180 after working it hard on a 60 degree day. I am inclined to think that either the thermostat is stuck or there isn't one in it. I put a new sender and temp gauge on it so I am pretty sure that I am getting an accurate reading on it. I plan to crack the housing and take a peek this weekend.

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Jim Presley

11-06-2003 07:10:41

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Re: Re: Re: TD-9 Questions in reply to Greg, 11-06-2003 05:28:10

I run mine (1958 TD-9 91 series) pretty good and have never had any problems. The heads on these don't have alot of water channels through them, so if you run it hard and then just shut it off, the head just keeps getting hotter. I let it run a couple minutes on a level surface before shutdown in diesel position. Just allow the engine temp to stabilize, keep the belt tight, oil fresh, and water level full. Works great for me! Have fun, jim P

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clark

11-04-2003 20:26:49

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Re: TD-9 Questions in reply to Greg, 11-03-2003 09:11:00

your engine is a D350, the 335 is a gas engine. the reason you are supposed to let it idle on diesel after working it is to cool down the cylinder head if this practice isnt done eventually the head will crack. switching it back to gas is to momentairly be doen to clean the carbon off the sparkplugs for easy cold starting on GAS, letting it run on gas before shutdown too long will only heat the head back up because gas burns alot hotter the than diesel. NEVER use either to start the engine on diesel this practice will soon blow the ring lands off the pistons and ruin the pistons& cylinders.It does not hurt anything if the engine is warm and starts on diesel. this is just a good sign that the engine and injection system is in good shape.

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Chris Brown

11-03-2003 18:22:39

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Re: TD-9 Questions in reply to Greg, 11-03-2003 09:11:00

I have started td9's in the junk yard on diesel, cold and with ether. and on 24 volts,24 is the only way it'll turn over fast enough to start cold on diesel. Those have a pretty tough starter.

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BothReds

11-03-2003 16:20:44

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Re: TD-9 Questions in reply to Greg, 11-03-2003 09:11:00

On my TD-9 I was able to jack up the crawler and take weight off the suspension cross arm one side at a time. I could then get at each bolt. It was still tricky getting the pan slid past the dual oil pickup tubes. But it can be done. Does your crawler have the big front end loadr or a dozer blade? Mine has the Bucyrus Erie loader bucket, this aoption also comes with tracks that are longer forward than normal. I have started these engines on diesel when still hot. They start so quick that starter damage does not seem likely. And they are relatively low compression compared to maodern diesels.

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Greg

11-05-2003 07:36:30

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Re: Re: TD-9 Questions in reply to BothReds, 11-03-2003 16:20:44

Thanks BothReds, mine has the dozer blade which is coming off this winter in order to remove the trunnions to have them rebuilt. That should get some of the weight off of those springs then jacking up one side at a time will be a little easier, never occured to me to approach it from that angle, thanks much and thanks to everyone else that responded to my post. While I have everyones attention, what spark plugs are you guys running in the TD-9's or IH 350cid engines?

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old

11-03-2003 10:25:32

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Re: TD-9 Questions in reply to Greg, 11-03-2003 09:11:00

I had a TD-6 and was told not to start it in the diesel side because its very hard on the starter hope this helps a little

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Greg

11-03-2003 10:52:39

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Re: Re: TD-9 Questions in reply to old, 11-03-2003 10:25:32

Thanks old, it fired right away, apparently it was still warm enough from having been running earlier. I have yet to stall it, but only a matter of time until I fail to get the hand clutch in fast enough and was curious if I would need to go thru the whole gas to diesel process or just restart it.

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old

11-03-2003 11:27:11

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Re: Re: Re: TD-9 Questions in reply to Greg, 11-03-2003 10:52:39

just make sure you never get it in to soft an area because if you get it stuck it isn't any fun to get out. I got my TD6 stuck and it took a lot of work to get it unstuck I ended up haveing to chain an I beam to the tracks to get it out. If I remember right I got that info from the owners manual that I had on my machine

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IH TD-18

11-03-2003 19:42:00

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Re: Re: Re: Re: TD-9 Questions in reply to old, 11-03-2003 11:27:11

I have had to start my TD-18 on diesel because the mag was getting rebuilt. It started on 12 volt with ether. Rather than spraying ether into the aircleaner, I took off the intake pipe and bypassed the air cleaner just to get it going, then put the intake pipe back on. IH crawlers liked to crack heads if you didn't let them cool down for a while.

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JEFFREY ROBERTSON

10-20-2005 16:08:10

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Re: Re: Re: Re: Re: TD-9 Questions in reply to IH TD-18, 11-03-2003 19:42:00

I have a td9 drott skid shovel. it will only run for about 1 min. then shuts off. i have changed the fuel filters and air. the motor was rebuilt about 2 years ago. it was running fine last week im trying to figure out my problem. thanks

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Brian

11-03-2003 20:49:08

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Re: Re: Re: Re: Re: TD-9 Questions in reply to IH TD-18, 11-03-2003 19:42:00

My question is with all the worry about cooling down on IH gas over diesel engines is what happens when you kill the blessed thing ?

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IH TD-18

11-04-2003 06:52:05

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Re: Re: Re: Re: Re: Re: TD-9 Questions in reply to Brian, 11-03-2003 20:49:08

The few times I have killed my TD-18, I just hit the starter and it pops bach off on diesel. If you kill it the sooner it gets started again the better. The heads were kind of a design flaw on IH tractors. Some guys never had trouble with them (probably because they let them cool down after a hard work out) and some guys just put one new set on after the other.

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Brian Foster

11-04-2003 21:53:13

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Re: Re: Re: Re: Re: Re: Re: TD-9 Questions in reply to IH TD-18, 11-04-2003 06:52:05

IH TD 18 Thanks for your reply Dad had a TD-14 years ago don't remember head problems but was 9-10 years old at time.My 14 has a surge tank mounted on the hood suppost to help with the problem so I have been told. Brian

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