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Re: It sorta followed me home. OT

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Billy NY

10-19-2012 07:17:35

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I don't think it matters that you post photos of that one here, but you'll absolutely get some praise on ACMOC/ACME. I'd love to see more photos of it.

I don't even think you know what you have there, as far as a find. That D2 is likely in pristine shape if those track pads are any indication of its use from when it was new. Its very likely that upon measuring(only real way to determine this)the undercarriage that its got very little wear, and is original since new. This appears to be a very nice 1 owner, low hour, kept under a roof, unrestored original D2 5U series, wide gauge, looking at the track pads again. Center of track to center of track will tell you, also the serial number tag which should be on the back side, lower left or around there, and on the engine block, left side.

I would imagine, with some fluid changes, careful cleaning, lubricating per the lube chart, that would be of high interest to collector given the condition, plus you have the light kit, battery box, rear work like, wonder if it has a PTO kit on it too ? Has a hydraulic reservoir on the front, maybe a rear pto drive pump on the back ?

One of the things common with these when sitting idle outside is the steering clutch packs bonding together from moisture, hard to free up and requires a substantial tear down if you cannot get them to unseize. Its very likely you may not have that problem.

Being set up for Ag work, likely it never saw a dozer kit, I don't see any trunions on the track frames, it may have the smaller idlers on the track frames for easier steering when doing ag/drawbar work.

One thing to be highly cognizant of on these caterpillar tractors with starting engines is the care of the starting engine itself. Some of these were notorious to have carburetors that for some reason will leak gasoline down into the starting engine crank case and thin/contaminate the oil, which will cause it to fail and require major work, its good practice to keep the oil clean, changed what have you, turn that fuel sediment bowl valve off once the diesel fires, and run it out of fuel. I'm not that familiar with these on D2's, but I've experienced it on D7's and have heard of it one D4's which have the same or similar starting engine arrangement. I always mention this to new caterpillar owners, of tractors from that era, because this old knowledge is becoming forgotten, absolutely imperative you take care of that starting engine, gas thinned oil will cause a catastrophic failure, not something you want on such a great find. Another thing worth mentioning, is while the starting engine is running, if the diesel is not spinning, there is no coolant circulating to the starting engine, so while I am NOT sure if the D2 is like that, apples and oranges here LOL, my D7's are and if you run the starting engine too long without spinning the diesel, you will overheat the starting engine.

With such a nice find, I'd go over it thoroughly before attempting to start it, service, lube, clean and check the oil bath air filters, pre-cleaners, and see if the diesel fuel system, like the injector pump and related components need to be checked over, lubed, checked to see they operate like say the rack, just hinting around about what you may want to consider, all likely once looked over, it will fire right up, just such a nice specimen of the last series of D2's that Caterpillar built, thats an awesome find and I can almost guarantee if you post that on ACMOC or ACME, it will get a lot of attention, I'd love to own one like that for that price, that gentlemen gave you a very nice deal given its condition and some of the extras on it, awesome little tractor with lots of collectible interest.

As a side note, D2 undercarriage wear parts, tracks etc., are no longer offered aftermarket, so you have to find good used or convert to D3 which is some extra work, its been done and posted on ACMOC some years back, with one in this condition, you'll never even have to consider it, has to be one of the cleanest, straightest, complete and most original paint intact I have ever seen, which may or may not mean much, but it reminds me of ones used inside on factory floors with the rubber blocks on the pads, never saw a drop of rain, or military surplus with very low hours, unused, my D7 is like that with 1000 original hours or so.

Always pays to see what else a seller has tucked away and might part with, this was well worth your time hope to see and hear more about it !

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white halftrack

10-19-2012 09:15:56

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 Re: It sorta followed me home. OT in reply to Billy NY, 10-19-2012 07:17:35  
Thanks. The serial number is 5u 9476. It does have a pro on the rear. I have posted over at the ACMOC site and appreciate the help. Unfortunately my experience is with Fords, so crawlers are at the upper limits of my capabilities.

Thanks again.

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Billy NY

10-19-2012 09:55:26

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 Re: It sorta followed me home. OT in reply to white halftrack, 10-19-2012 09:15:56  
No problem, thats just a rare find and one to highly appreciate, we all wish we could find something of that vintage and just have to do some service work to it, cleaning and looking it over, before being able to use, show or just enjoy, I'm in awe of finds like this, kind of the salt of life kind of stuff when it comes to old tractors and things !

You'll have the envy of a few guys over at ACMOC I am sure, though you may not be crawler savvy, most likely you won't have to be with one in such good condition anyway. Its just great to see ones like this turn up.

Bill Glenn out of PA I think still posts on one of those web sites, he did a nice overhaul on one of these, 10+ years ago and seems to have enjoyed the heck out of his D2 in all the years since by way of the photos I remember him posting, small easy to transport crawlers like these can be very useful and a lot of fun.

All that one needs (well it really needs nothing actually !) is a tool bar dozer, the push arms when not in use for a dozer blade, pivot around to the back and you can use tool bar implements on it, find an old Caterpillar brochure on ebay you'll see what I'm talking about.

I wonder and am not sure if there were track frame options say like D4's but if that were to have a 5 roller trackframe, it would balance out for use with the above mentioned dozer. I know D4's you could get an extra roller to make the track frames a bit longer, for say an HT4 early track loader or for similar reasons.

The one nice thing about crawlers set up for ag work is the undercarriages last a lot longer as they are mostly using forward direction, not making as much turns which is not the case when using as a dozer or track loader etc.

Best of luck with this one, that will compliment a Ford any day, even more so if you get one stuck, I've pulled my 850 out more than once with my D7, crawlers are handy even if they don't see a lot of use, that one time you need it makes it worth while !

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Ultradog MN

10-20-2012 18:52:59

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 Re: It sorta followed me home. OT in reply to Billy NY, 10-19-2012 09:55:26  
What's fun about pulling an 850 out with a D7 is you can do it alone :)

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Billy NY

10-21-2012 07:31:03

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 Re: It sorta followed me home. OT in reply to Ultradog MN, 10-20-2012 18:52:59  
Yes you can, its overkill, you can't even feel the D7 working to do this job.

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Ultradog MN

10-19-2012 16:04:26

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 Re: It sorta followed me home. OT in reply to Billy NY, 10-19-2012 09:55:26  
Thank you for these posts. I read them both - twice, and learned a lot from them.
It sounds like he found a little jewell.
That's got to brighten anyone's heart.
I'm surprised to learn that the main engine does not share oil and coolant with the pony. I just always assumed they did. Start up the pony, let it pump up the oil in the main engine, warm the coolant a little and assist in the start of the main motor that way.
I'm sure you are right though. I remember Dennis Oneil was a friend of my dad's.
He ran a D7 or D8 and dug a lot of basements for my dad who was a carpenter. I remember riding with him several times for an hour or two. That's maybe when I figured out (erroneously) that the engines shared fluids.
I had about a 1962 955H for a few years but the pony had been removed and replaced with an electric starter.
The sad part about owning a dozer is you can't just take one out for spin like you can a rubber tired job
I'd be happy to see more of this machine and follow it's progress - especially now that I know what you found.

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Check Break

10-19-2012 23:39:00

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 Re: It sorta followed me home. OT in reply to Ultradog MN, 10-19-2012 16:04:26  
Quoting Removed, click Modern View to see

The pony motor's engine oil is separate from the main engine but they share the same coolant.

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Billy NY

10-19-2012 18:15:41

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 Re: It sorta followed me home. OT in reply to Ultradog MN, 10-19-2012 16:04:26  
Don't quote me just yet, in those years you had starting engines for the D2, D4 and I thought the D6 that were similar, the same or in "that ballpark" if you will LOL ! For these tractors the starting engines were mounted in the same fashion, on the back of the diesel, having horizontally opposed pistons, unlike the early vertical 2 cylinder starting engine which was common to the Diesel 40, RD6, (early 3 cyl. D6 like 2H, 5R) D7, D8, the latter 2 got an updated 2 cylinder starting engine in the 50's, just kind of some general information on these.

I have a couple of stacks of military technical manuals, for government purchase order tractors, D4, D6, D7, D8's, I do not have any books on D2's, but the configuration on a D4 might answer the question. I collect these and enjoy the older Caterpillar tractors as much as I do Fords, grew up on both, we had a Ford dealership, funny how they never leave you LOL !!

Now he's got the books for it too, that's just awesome, nice little extra, which for these you really need to have, there is no question on that, Operators Instructions, Serviceman's Reference Books, and Parts Catalog are a necessity.

Those guys on ACMOC/ACME are an unbelievable wealth of information & experience, there were a few old hands who spent careers working for Caterpillar, like Stumpjumper (SJ) out of PA, I can't hold a candle to what they know about these, Old Magnet has probably forgot more than I'll ever know about them etc, so I would humble myself as knowing enough to be dangerous LOL !!!!!!

I've ranted about taking care of starting engines on the crawler forum for years, only reason is I am thinking of those who may not know about the scant few pitfalls in regards to taking care of those high rev little old technology engines.

The 2 cylinder vertical engine does not share oil, it has its own sump. The coolant will circulate when the diesel is spinning only on those. Now, I went and looked in a D4 military tech manual, read the operators instructions, it leads me to believe because it states water temperature is registered by a gauge on the dash, later tractors, that circulation of coolant is achieved by the diesel's water pump, the kind with the packing nut you have to tighten, special wrench came with the tractor for this. Maybe I'm wrong but the reason I mention it is these darned tractors are so old now, not many people are left who ran them back then and simple things to remember like this with the coolant and the gas thinned oil gets forgotten, then a new owner finds one like this and may not know much about it and makes a costly mistake, none of the starting engines are air cooled, that much is true LOL !!!!

The D4 manual also states the starting engine has its own crankcase compartment for oil so I would bet the D2 being similar, same or almost the same starting engine may not share oil with the diesel. Might be comparing apples to oranges, but in an attempt to be helpful or make someone aware of something important. Details may not be 100% accurate, but the intent is to be helpful if possible.

You have the process right, that starting engine really was ahead of its time by virtue of what it did to start the diesel. The starting engine exhaust was allowed to warm the diesel's intake air, huge help when cold. The coolant, and how many gallons, definitely is warmed and circulated, warming the engine block, another bonus in cold temps. The diesel's crankcase oil is circulated and you would not turn the fuel on until you at least saw pressure on the oil gauge and maybe for awhile after. Though the oil may not warm much, its moving and circulating and getting more viscous for as long as the operator sees fit, eventually you have to put the compression up to half, starting engine may start to lug a little, but you are now starting to heat the cylinders with compression, turn it to run and that starting engine, in the cold may lug right down, but now you are heating those cylinders up and once warm on a engine with decent compression or like my one D7, it will immediately fire, colder temps, more wear, you will be on the starting engine spin cycle. You sure can't prepare an engine to cold start in winter temps any better than that, especially in those days. I had a guy get a truck stuck in one of my fields back in '02 and I had to get the old D7 fired up when the temps were in the teens, and boy did that starting engine lug, but I had it in good running condition, it would fire with the hand crank, though it also has electric start. I had to let it spin a long while, but as soon as I put compression to it and gave it fuel, smoke rings went up in that crisp air and she slowly roared to life one cylinder at a time.

I used to ride with my dad on the older and worn out D7 I have, as a kid, there was no better sound or interesting piece of equipment, like you remember with your dads friend, all of the naturally aspirated ones have such a nice sound, especially the 3 cylinder D6, and the 4 cylinder D7's when under a heavy load, I think the 4 cylinder is the best for sound LOL !!!

I ran many 955's but later ones, you still see many of those around, electric start conversions are ok in warmer temps, but without some kind of other starting aid, glow plugs, heated manifold or what have you, I cannot imagine it working well for say one of these era D7's or other models from those years, plus they don't get used a lot, you had better maintain those batteries, plus the initial conversion cost may be 2K by now on some of these, was well over 1K awhile ago, and is why I always suggest taking good care of the starting engine. People convert them, I know of one D7 3T that it was done on after the starting engine tossed a rod, tight motor with some cranking and a little ether will work ok in cold temps, but nothing like a starting engine when its real cold, like less than 0 F.

Sure you can just take one out for a spin LOL, like these old ones, that's after you've lubed every point shown on the fold out lube chart, get your Alemite volume pump out to lube the track rollers etc. etc., then you have to start it as per the above LOL.

I just love these kinds of finds, almost as much as fence row or abandoned ones, which always need some major work or have a seized engine, steering clutch's might be seized, or so on.

You look at those photos and with just a cleaning you have a very nice, (with some extras-lights, pto, hydraulics) straight D2, with original paint and decals in very nice shape.

He's found a D2 5U in very nice condition, seller was very generous to him and hopefully it confirms out to be what it appears to be, that being the case, the value as is, to a collector, or anyone interested is going to be much more than he paid, its just one of those tractors that turn up once in awhile, just nice to see one in that condition, aside from some fading and minor age related cosmetics, you get to see one exactly like it was delivered, history is kind of preserved a little. They're not rare as a model, but low hours, light use, rare to find in that condition with such an apparently nice undercarriage.

I agree, will be nice to see what he does with it along the way of getting it up and running, and so on, one thing is for sure, make sure it gets under a roof in a dry area !!

Theres one other tidbit of info you may appreciate, in regards to electric start conversion. I believe that before the D2's production run was ended, they could be had with factory direct electric start, and I thought both the D2, and D4 either had provisions to somehow have both, you would have to read the old posts on ACMOC/ACME and see about conversions, there were some threads posted as a bulletin there about electric start conversions, part numbers, helical gears matching the flywheels and starter pinion, as well as machining out the hole in the housings where needed to, I thought I recall at some point the factory prepared some of these, and some could actually have both, my memory is limited on that, and I may not have this totally correct, just something of interest and knowing you worked in a machine shop or have that background, all of this has to be interesting, or I hope so LOL !!!!

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