I just got my dozer two weeks ago. I have my "Engine" manual it does not tell me what size the engine is or what model it is. I know it is a four cyclinder diesel, but what model or size is it called? It is a 1937 RD4 s/n 4g4344. Can anyone help me with this simple information that I know I should know but can not find in my engine manual? Thank You very much. (New to caterpillar world and trying to learn as much as I can as fast as I can).

D4400 I believe, 4-1/4" bore

Rabbit 2,
Don't feel bad, Cat hardly mentions the engine model in any of their literature, they just expect you to know......somehow:confused:

CCjersey and Old Magnet, thank you both for the info. I've only owned this cat for about three weeks and you'll have already taught me a lot about it. You'll are "Top Drawer" in my book. Thanks again

Rabbit2,
The above book covers all Cat diesels upto the time of publication, it is Cat Form No 5060, mine is 5060B printed 12-47, the B is just to identify the edition.
I do not know if these are available as a reprint.
Cheers,
Eddie B.

Thanks for the info edb. I have a engine manual and a operators manual, my next manuals will be a service and parts. If any one out there have these for sale I'am in the market to buy them. Thanks again edb.