D2 5J fuel cap as a radiator cap?

Hello Jordan, congratulations on getting your D2, it looks like a nice straight tractor and with that blade it will be very handy, I like how you are wearing a colour coordinated shirt too while driving her! My D2 3J/5J Parts book says the radiator cap is 5B1343 and a quick search on the Machinery Trader website shows none available anywhere in the world apparently which I find hard to believe but then they are a older tractor, I'm with Garlic Pete in thinking the existing cap should work fine until you come across a proper original if that is important to you, best place to ask is here in the For Sale / Wanted to buy section, better still would be to get a advert in the ACMOC magazine, that goes to every member and only a very small % of members use this Forum, fewer than 5% I'd suggest.

I was interested to see your part number chart showing Cat Classic Part numbers, I've never seen that before and it would be great to be able to access that for other machines, how do you get it? Just a note on the Cat Classic Parts too, they are generally not the same spec as the original Cat part and I was told were not intended for hard working machines, for example I just replaced the bearings in my D2 5U water pump and bought the Classic Part bearings instead of the original part number bearings, the price was about half, but when I counted the number of balls in the bearings from memory there were 2 less balls in each than the originals, my old Cats will only do 15 - 20 hours a year so it shouldn't matter and I'm sure if you found a Classic Parts radiator cap it wouldn't really matter if the quality wasn't quite as good as the original either.

Enjoy that D2, if that was your son trying to get run over in youtube movie I reckon he would be itching to take her for a spin too, better than riding a bike for sure.
regards
Mike

Thanks for the info! The shirt was not planned, lol.

I'm not looking for factory correct, just functional. So long as not having an actual radiator cap on there won't hurt anything then I won't be concerned.

After I get everything sorted out on this one I'll likely run it up in the woods awhile, piling brush, pushing snow, etc until I get my other "new" D4 7U going then I'll probably sell the D2. We also have lots of wild rose bushes to remove at one of our places but I doubt I'll use the D2 for that, I don't think it's going to be big enough or powerful enough to do any good other than on the real small bushes. We use our D6C for those;
[attachment=42166]D6C-1.jpg[/attachment]

I haven't gotten either of our boys on the D2 yet but they do have a little experience running equipment, "Santa" made this Caterpillar Digger a few years back;
[attachment=42167]Cat Digger.jpg[/attachment]

Here is our youngest on our D6C

https://goo.gl/photos/GwzzoyZcqwekyCmbA

Here is the link to the Cat Classic Parts Product Catalog. It's thousands of pages so I found it easiest to save to my PC and use Adobe to search or jump to pages.

Thanks,
Jordan

I've had one on my 5J for at least 10 years! I was mildly disappointed that it came with an "Assembled in Mexico" sticker on it. BUT! I haven't peeled it off and as far as I know its still on there! Does it work as good as the original? Yes and it was only around $15 like you mentioned. Go ahead and buy it, I just asked the Parts Guy to look it up after he sticker shocked me with the Factory replacement price.

Hi Jordan, thanks for the link to the Classic Parts list but it won't download on my computer for some reason, just says system error, I suspect the file might be too big? A couple of years back I bought the Cat Classic Parts Product Book from my local Cat Dealer here in Oz, it was printed in Sept 2011 and is hundreds of pages but unfortunately none of them relating to D2 or even my old D4's, the crawler list starts at D3 and it doesn't have any early parts numbers like that 5B1343.

Sounds like you and the family are well supplied with working Cats, it won't take those boys long to get handy with them, best thing for them.
Regards
Mike

I tried the link , and got the same thing Mike .You may need to be logged in to the Cat site first maybe .

Yes, its CAT PARTS dot COM, you need to be logged in.

Looked at your videos. Engine is burning clean (clear exhaust ) so that's a good sign.
That radiator cap looks factory correct to me. I would not swap it out.

That cap does look correct....

I have updated the link in my post that I think now should take you to the Cat Classic Parts catalog. If not, you can use the link below to the copy I put in my own Google Drive account;

https://drive.google.com/open?id=0B5lXds_1wtQCUW9ucXZOVlF6MFk

Here is a picture of the cap I have, it had a faint warning label about fuel on it and does not have a pressure spring or anything;

[attachment=42196]radiator fuel cap.jpg[/attachment]

I'm now in the middle of modifying that "radiator" cap so I can attach a fitting to pressurize the coolant system to check for internal leaks. I drained the motor oil this afternoon and there were green droplets in the oil, on top of it all being gray from that last time I ran it so I'm more sure now that something is wrong;

[attachment=42197]radiator fuel cap 2.jpg[/attachment]

[attachment=42198]gray oil.jpg[/attachment]

If I get water in pan after pressurizing the coolant system, are the pre combustion chambers the first place to look or do I pull the inspection plates on the motor first and look for leaking around the bottom of the cylinder sleeves? The radiator looks almost brand new so I wouldn't suspect the oil cooler at this time.

Thanks,
Jordan