CAT D5C Undercarriage Specs

Going to look at a '98 CAT D5C this Friday. Guy claims UC is 75% but I want to measure it. Problem is I don't know where to find the specs so I know what I am looking at. I've searched all over the web and found a few discussions here but all the links were outdated. Is there anyplace on the web I can find undercarriage specs or do I have to go to a CAT dealer to get them.

Couple other things: A guy I work with found this machine and I trust him. He has told me that the owner bought it from a logging outfit but has since put about 10G into transmission and final drive. The mechanic was supposed to be reputable and would not do the work unless the owner would do it right. Supposed to be in good shape now but I am a little leery about a machine used by loggers - they can be tough on equipment and here in the Appalachia Mountains the terrain can be tough on equipment. I am just going to do a general check and measure the UC if I can get specs. My friend knows a good equipment mechanic that can do a much better evaluation if I get serious about it. Any suggestions of what I should be checking closely on a dozer used in a logging operation?

Jim I do not want to come across as a know it all or smart xxx But what is the difference if you find it 70% 60% 0r 50% . It is either good enough to run awhile or it is wore out. At 73 years age I have been buying dozers for well over 45 years and I can tell you by walking by a dozer very close to what it will measure out. FIRST thing to do is look at the front of the track frame see how much travel is left on the idler block. Is the track chain stretched out or still have adjustment left. Next feel and look at the tract bushings and see if there is wear or worst case busted bushings. Next look at rail height right in the center of the link see how much meat is left, you do not want the links pulling into. Look at the sprocket teeth . Last lots of folks over look bottom rollers. Make sure the rollers are not down hitting the pin boss of the rail . After that start the unit push down on the blade and clear the tracks. See if the rollers have slack or are leaking. Wish we were close I could save you a bunch of time. Run it warm the engine up then look for blow by from the crank case. One other thing I would do take a wrench and pull a final drive check plug. Check the color and level of the final drive fluid.

jm, appreciate your advice. I've been doing a lot of reading on evaluating used dozers and many suggested the only way to know actual wear is to measure. No doubt if i'd had your experience I wouldn't need to measure. you have a good point though. no more than i will use it i doubt i'll add any significant wear. i plan to use it to clean up my 55 acres (reclaimed mine land), repair gullies,reclaim acidic areas,build a pond - then sell it. just trying to be as careful as i can to get a good one.

I cannot find any spes for the D5C but did for the D5,if they are the same here's what I found,stick something like a pin in the sprocket and reverse back so the slack is taken out of the track,measure over four links,that's five pins from center to center,new the track would be 27.64",25% worn the reading would be 27.79",50% worn 27.96"75% worn 28.18" 100% worn 28.42. the pitch is listed as 6.75",the rail height is 98MM,bushing OD 55.9MM,track pad bolt 5/8".look at the front idler guides and notice how far out they in the frame,i.e the more frame showing the better the track.
AJ

Jim where are you located? jm. e-mail open