Caterpillar RD4 to D4 1936-1939, what's the difference?

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A walk around of the 1936 Caterpillar RD4 4G238 turns into a study on design evolution to the Cat D4 tractor / dozers. I compare 4G238 with 4G9986 and everything in the 4G series in between.

Episode #55

We are operators pretending to be mechanics.

Regards,
Aaron & Greg "The cleaner"

Thanks for watching!

Used gopro and corel editing software in the creation of this video.

LAOL
P.O. Box 395
Keenesburg, CO 80643

[beginlivinglikeaboss]

That is a clutch link. I have them on my D6. One of which blew apart. There are 5. One new one is $243 bucks. Currently replacing it today.

[malcolmyarnold]

Hi mate thanks for sharing I love all those old machines keep them videos coming

[timot]

That is a nice RD4 your dad got, a good addition to the D4 fleet.😀

[Sam-dbk]

If you were in Colorado, and purchasing a used machine from the dealer, the proper term for the yellow stuff on the metal was (a) McCoy Overhaul.

[rickteixeira]

I am a new viewer, kinda, squash told me about your site and your site is very I formative. I will be a loyal viewer

[cherylf.]

Thats a nice RD4 the cleaner got...good for him.😊

[TJAkin]

Very Spielberg of you sneaking in the Wilhelm scream at 2:50. Laughed and almost spilled my coffee!
Certainly lots of differences on those early machines. Thanks for pointing out the radiator sides and early fuel tank cutout. Nice original machine you have there.

I probably shouldn’t go here as some are passionate about this, but one might ask what the R in RD stands for. Rudolf Diesel? Roosevelt? Road District? Nothing at all? Might as well ask what engine oil to use while you’re at it! Haha, good luck with all the controversy as one may ever know. Love your work.

[clintonmississippi]

Hello,  
Well Squash told us about your channel and i have really enjoyed the videos I have watched so far. Looking forward to enjoying many more videos regarding your Cats. My father had one when I was about 7 years old. I am 82 years old now. He rented a farm and found an exhaust pipe sticking out of the ground on the edge of one field. Started digging and guess what he found... a D4 cat buried in the buckshot mud. He dug it up, cleaned it off, cranked it up and used it for many years. I actually got to drive it a little bit thanks to our wonderful operator.
Sam USA Ms

[raincoast]

A beautiful machine, so glad it has been preserved.

[keithwarkentin]

It’s amazing to me how the world goes round some like Fords some like Farmalls some like rainy days some like sunny days and I have learned that for the most part when you love something it’s usually for life and you can’t help yourself you love it and that’s all there’s to it 😀🇨🇦

[billh]

I now see that the link you showed was for a clutch, so many have pointed out. Me, being the ignorant one (I'm a car electrician- me know _NO_ - _THINK_ ! about Cats) thought it was a leaf spring shackle.😅

[texasjetman]

Sure glad ole Squatch 23 sent me over to your channel. If I can ever help you guys out done here in Dallas Ft Worth let me know. I’ve got plenty of space to store a CAT for you if you get one bought down here. My brother and I have a CO trip to Ft Collins in the spring so we can haul up something if you get it bought.

[dwjr]

Good Saturday morning. That machine was one heck of a find! Looking forward to seeing it running.

[CarlHargreavesRustyRelicsUK]

We got x2 D2, 5J's patiently waiting for some love. My pop is gathering enthusiasm more and more from each video you put out.
All the best, from fellow tractor Nerds 👍🏻

[lordcaptainvonthrustrd]

Very informative thank you

P.S. I also watch the ads in full and I've even ordered from one 👍

[marty]

Good comparison video! And I'm a Minneapolis Moline guy, but i still love to move dirt with a late model Cat D7G.

[colin]

Yup, I trip over my tongue all the time too! lol. I can't wait to see a video of you and your dad each driving a RD4 together

[TJAkin]

Dad always called those “thermoids”. Manufacture’s company name. Connects the flywheel to the main clutch on older machines. i.e. Cat 60, 2U, 8R, 1H D8s. Easily visible on a Cat 60. Visible under the floor board on the old D8s. Different lengths for the various machines.

[billlee]

Great and informative video. I learned a lot. Really enjoyed your investigative abilities. Thought for a minute I was watching Magnum PI. Great mustaches must investigate alike.

[Recommended_by_Fred]

BeeGee hydraulic kit, made kits for everything! Nice addition. Too bad you don’t have the implement it pulled, sounds like they were buddies for several decades.