The first tractor is almost certainly a late model 1H series D8 from around late 1939 to late 1940. It has done some serious amount of work .. so it's not new, but a year or two old .. and if the pic is dated 1941, that places the tractor in the age bracket above. According to my records, the 8R series did not appear until Jan 1941.
The tractor has the later style carrier rollers that became standard in early 1939 .. and it is also, somewhat unusually, fitted with both a front mount cable control, as well as a rear mount cable control. The control lever for the front-mount cable control comes off the RH fender at about 60° towards the operator, and the control lever for the rear-mount cable control can just be seen, projecting over the seat and fuel tank, to the operators right.
Here is a pic from the January 1940 LeTourneau catalog showing a new, late 1939, 1H series D8, fitted with the CK-8 angledozer, and rear-mount cable control only ..

img296.imageshack.us/img296/8242/letck8hy3.jpg

Boely - The item you asked about behind the D7, 7M series tractor, in the second link, is not a scraper .. but it is almost certainly an Etnyre hot asphalt mixing plant.

The liquid asphalt or bitumen, is contained in the rear tanker-trailer. This is pumped through to the front section, which is a drum mixer, driven by the D7 PTO .. and which drum mixer also appears to have a heater incorporated in it .. judging by the two exhaust stacks.

In operation, local aggregate (crushed, small dimension rock) is graded into a windrow by motor graders .. and the D7 then drags the asphalt mixer along the windrow of aggregate.
The asphalt or bitumen is heated and pumped onto the aggregate, and the whole lot is thoroughly mixed and heated inside the open-ended mixing drum .. whereby the "hot mix" is left behind in a flat windrow, for graders following, to level out as a completed road surface .. whereupon it is then compacted to provide the finished surface.

Todays asphalt methods have changed only a little, with dedicated asphalt machines taking hot-premixed asphalt into a hopper, from dump or tipping trucks .. whereby the "hot mix" is spread evenly and thickly, in a more highly controlled grade, than what the graders would have produced in the old days.

The tractor that "Old 3T lover" put up the link to, is a D7 7M series, because the 3T series did not appear until late 1943.

Thanks for the link to the "Life" pictures, they are fabulous pictures of the 1940's.

Thank you al for the great reply,s!!

I have orderd an cd-r disc with on it the following TM,s.
I have orderd this disc from this company:
www.easy1productions.com/1294/8127.html
And I have orderd item:TO27 with on it:
TM 9-1773 Heavy Tractor M1,Catterpillar D7,183 page manuel with 319 scans.
Also contains TM 9-1224 Angle-Dozer Tractor Mounting,Cable Operated Le Tourneau,and TM 5-1580 Cable Operated Le Tourneau model X7 and TM 5-9282 Power Control Unit.

Maybe is this disc something you like,or could use too.
I am verry curious about this disc,I have orderd it especially for helping me building and detailing my 1/35 model of an D7 3T Dozer with LeTourneau dozerblade.

I have several of those disc,s and I can say they are great,I use them for my modelling and I also like to know how stuff works.
(I have no connection to this company,other than being an happy customer!)

Again many thanks for the answers/explanations,it is most appriciated!

Greetz!

Boely.

The Cat does not run but all the parts are there.

It has a large wench on the back.

What would something like this be worth to a collector or someone wishing to use it for parts?

Anyone interested can call me at 541-821-3778.

it is located in Ashland, OR

I am thinking of scraping it if there is no interest.

"boely" wrote:

Thru the same link I posted you can see an other dozer.
This one:
images.google.com/hosted/life/l?q=us+eng...url=234c909bc05134c9

The equipment behind this Dozer is that an scraper?
Sorry for so many questions,like I said above I am new in the world of Caterpillar,s and their equipment.
Any reply,s are much appriciated.

Greetz!

Boely.

The thing on the back of the tractor is some kind of roto-mixer or pug mill. It was driven by PTO and driven over a windrow of whatever the army wanted to make roads out of. It picked up the windrow of whatever and mixed it with oil out of the tank behind. Then the windrow could be spread out and compacted or used later to overlay roads or patch holes. I THINK!

Changed opinion of pictures and cannot delete what I wrote and so I leave you with this.

I like the pics of the (Trackson?) crane on the TD6.