I recently purchased a 1954 D2 non runner. Its got a few issues before I can get it to running. Removed main clutch today, it was stuck but not as bad as other posts on here. Ordering parts this week from general gear.
Starter pinion was stuck in engaged position, got that freed up but looks like I should take that apart and clean.
In the 80s i worked on tracked vehicles in the army but have forgotten most of everything. Im sure will have some questions while getting her up to snuff.
Jim

yours is a tool bar machine you can drop the blade and run other attachments like cultivators and rippers ploughs etc. find yourself a copy of the OMI, parts manual and serviceman reference. these can be found on ebay and at swap meets.

The hour meter is filled with oil as of now so no idea of the hours. 
Ive got the parts manual, operators and maintenance manual and have read and reread a lot of posts on this forum to get me going. Also watched youtuber called squatch videos to help me out.
Honestly I never would have bought such an old dozer without this foruum. Kudos to all the experts on here.

Jim

Welcome abroad! As a member, you can access our technical library. You may find some helpful info there. BUT, these guys who have been there, done that are still the best to go to!

If you watch the series of videos from Squatch about his rebuilding of his D2, you will be familiar with every bolt, nut and accompanying fixtures. Great info. Also welcome to the club.