1947 Caterpillar D4 and 1966 D4 Compared

[@dougcooper6004]

Being picky, what you call grousers, are really track pads. Grousers are the part of the pad that stick up. You can have pads without grousers. Enjoyed the comparison, thanks.

[@froghairfarm]

Doug / you are spot on! When I was editing I noticed, but too late. Definitely track pads, these happen to have grousers. Thanks for watching!

[@Caje-zf8md]

After 12-15 years of searching for a decent 7U, I finally gave up. I ended up with a '64 D4D (1963-77) with gear/direct drive. The D4D doesn't have that nice "bark" of a 7U but it does have one more lever(forward/reverse) than the 6U/7U which keeps the operator pretty busy.

[@froghairfarm]

Very similar if not identical to this one depending on your blade. Thanks for watching, I like the D4d a lot.

[@mog5858]

dost the d4d not run a different style transmission as it run's a reverser or Jonson bar vs the stander gear shift? thanks for sharing

[@froghairfarm]

Yes, the D4D's transmission is somewhat different to accommodate the reverser mechanism. The trans cover is also different, in that the 6U is a single piece cover, where the D4D has multiple components to make it easier to service. Pretty soon I'll have an early RD-4 to compare against these two. Thanks for watching!!

[@Fatamus]

Thanks bud. 😁👍

[@froghairfarm]

You bet! Hope you’re doing well!

[@petermccall9354]

Hi from Australia, the D4D out here either had a winch or a big single ripper, no pony motor. cheer Pete.

[@froghairfarm]

Hey Pete, I have heard that rippers were more common in Australia, than here. I would think the vast majority of D4D's were direct electric start. Thanks for watching!

[@NineCylinderDiesel]

Those headlights give the machine a face, almost making it seem alive.

[@froghairfarm]

They do have a “personality “ - thanks for watching!

[@jaysonmaharaj8003]

How much do d4d normally sell for. Are they collectible?

[@froghairfarm]

Pricing is largely dependent on condition, configuration, and location. They are kind of "in between", functional, and somewhat collectable.

[@thecollectoronthecorner7061]

The side shift reverser makes the later cat more handy than the older slide bar shift.

[@froghairfarm]

Definitely nicer- hydraulic reverser even better!

[@evankibbe590]

👍😊🌎🌞

[@froghairfarm]

Thanks Evan!

[@harlandmcnall2579]

Post WW2 as opposed to post Korean war

[@froghairfarm]

The "U" series was built up until 1959 when the D4C was introduced. The "C" was more like the "D" that the prior "U"'s - hope you enjoyed it!