View Full Version : old cat 12 grader

07-22-2016, 01:03 PM
Going to look at a older cat 12 grader, pony start. Supposedly in usable shape, both motors run good, plus add on power steering, no cab, he also has a kit to make direct start. Havent got serial # yet. Any thing in particular to look at? Any problem areas? Thoughts?
Thanks, Andy.

07-22-2016, 04:03 PM
have a good little read on this. link he said it better than i can. there was a theread going about a 212 that had lost of grader info just the othere day.

07-22-2016, 04:31 PM
Thanks for the heads up! Good info in it, thanks, Andy.

07-22-2016, 04:42 PM
Is this the one on cincinatti craigs list for 3500 i would buy that in a heartbeat if i had some loose cash looked like about new tires and very clean

07-22-2016, 07:10 PM
Thats it! He has sent serial #, 3u 187.From what I can find on this site, that makes it a 112 ? Pretty early production I guess. Any idea what year?

07-22-2016, 08:26 PM
Thats it! He has sent serial #, 3u 187.From what I can find on this site, that makes it a 112 ? Pretty early production I guess. Any idea what year?

If its a 112 and you decide you don't want it, let me know. Might be a little small for you. You probably really need a 12. Big Grin

07-22-2016, 09:13 PM
3u187 is a 1947. First year with the D315 engine

07-25-2016, 08:21 PM
Well, I got it bought this evening!!:loco I'll try and post some pics when i get it home, prob this week end. Pretty happy with it, 69 years new!! Engine & frame serial #'s match! Showing 1500+ hours, could this possibly be right? Probably not....but still seems to be in good shape! Parts book on the way, Ebay. First order of business, brakes. Cat dealer can still get the brake parts, who else can supply parts for a 69 year old machine? NOBODY!!!!!!GO CATERPILLAR!!!!

08-04-2016, 02:26 PM
Got the old girl home, real happy with it. Sheared the pin on the front leaning wheel, last owner tack welded coupling, now it let go. How hard a pin does it take? Added brake fluid and right side is working, looks to have been rebuilt. Notes the mechanic kept said couldn't get left wheel off to work on brake. Put new belt on power steering and it works OK when your moving. Bought a operators and a parts book off E bay. Still needing a servicemans book for 112 3U #187. Any one have one? Trying to post pictures, but not having much luck yet.

08-08-2016, 10:40 PM
just bought a cat 12 8t6995. Do not know nothing about it. Where on e-bay did you find manuals? It was being towed to start. I got the poney motor running but it is missing the clutch and drive assy that is between the pony and main engine. New to this, any help appreciated.

08-08-2016, 11:08 PM
pretty much any clutch/pinion assembly off a d318 will work for you,

08-09-2016, 05:02 AM
Hello Oldbeek, I just typed in Cat Roadgrader, then model and serial #. Brought it right up. Good luck with it! Andy