Gents, 

I found a Cat d2, owner thinks it's a "1950's" but he can't find the serial number.  It's a narrow gauge machine with a LeTourneau angle/tilt blade set up, rear D2N winch and period correct curved "rops".  Overall, it looks fairly complete but the bad news is someone took off the hood and valve cover, It has been left that way for some time.  My question is, If the engine is toast and I have to find another D3400 motor...is this a deal breaker for scrap value ($200-300 for entire dozer)? I have located another D2 engine for $1000 that runs.  Would this be a worth while project to swap out the engines and have a decent little running dozer? 

Also, while I was swapping engines what else should I look at doing maintenance wise? I read somewhere the early D2's required the engine to be removed for a clutch swap, so I will obviously be looking at the clutch and pressure plate.  Anything else? brake bands and steering clutches? I am trying to get an idea of possible maintenance to get it going again so I can decide if it's sellable to the wife haha

I'll try and get some photo's and post them here

Thanks,
Nick 

sounds like the purchase price is near scrap price. sounds like a decent deal knowing that you are looking for either a project or parts.

@neil - The other engine is a 3400 as well. I have watched a few videos/read articles about the engine swap, other than the overall weight of the 3400...are there any "gotchas" about it?

Does anyone know what serial number they went to the wet clutch on the D2's? I am going to go see this dozer in person in a week or so (work contingent). Anything to look for other than above mentioned items to make rescue easier? it's a 5 hr drive so I will be able to take some tools with me but won't have access to all of my stuff or my crane.

Thanks,
Nick

look for the serial number plate on the block behind the pony levers--if no plate the number was usually pressed into the block--may take a little scrapping to read---look for the plate rivets on the block

The D2 started in 1938 with the J series with the D3400 engine, that series ended in 1947 with the start of the U series with the D311 engine. An oil clutch was an option on or adaptable to 5U16128 and up and 4U7020 up.

ALCON,

I looked at this D2 this weekend and it is in worse shape than expected. Not only will the engine need replaced (possible to save some parts from it) but the undercarriage is also in I would say fair to bad shape, the pads have been rebuilt via welding among other issues. My D2 replacement engine also ended up falling through so I had to pass on this, I don't mind a project but the engine was a critical piece of me buying this one. If anyone is interested, please shoot me a message and I will pass on the information. Thank you for all of your responses!

- Caveman