So if the 933f uses the same undercarriage as a d4, what model or series d4 will it be. Will the pins and bushings interchange and if so can someone tell me the part numbers. I realize replacing the chain is recommended but this is adding up quickly. Seems I have more time than cash. LOL I'm hoping parts for the d4 will be more accessible. Thanks

It was newer D3 that used the same rails.

THE d4 -7u used the same same pine 4b6166-.boushing 4k3918- master boushing 4m740- master pine 4k3919

Thank you! My parts catalog is being shipped. I'm trying to get parts lined out while the tracks are off and digging in to replace the pinion gear hub. This is way more involved than I originally thought but since I'm in this far, I might as well do it right!

Sasquatch advice is sound!
Consider the condition of the links - if the bushings are worn completely through to the pins, that might just be telling of more problems with the rail segments.
What condition are the rollers and idlers, sprockets? The pins and bushings are only one piece of this component that keeps the machine moving.
Anyone attempting to turn pins and bushings without a very good track press properly aligned and with proven cylinders and relief valves is looking for trouble.
Pressures are very high and those frozen. rusted, brittle pieces of steel have been known to become projectiles! (Having had a cylinder on a commercial track press EXPLODE, I can attest to the results and bath one takes in the hot hydraulic oil - I was extremely lucky to not be hurt as well as my shop mates in close proximity! I had just finished as set of D8 tracks and retooled to D4 so do not assume size is the only factor.)
You will most probably be replacing a majority if not all of the bolts holding the pads to the rails. Don't forget the special wrench to hold the nuts on those bolts.
Removing those bolts can be problematic too, heads become rounded off, a socket will not stay in place. Cutting torch with a flat scarfing tip is a must to avoid damage to the pads and even then one must be careful.
USE ALL SAFETY GEAR - Face Shield, Gloves, Long Sleeves! (one does not need this "stuff" until they don't have it on, then it is too late)
cts

ctsnowfighter - You might get a kick out of watching this track repair outfit - no protective equipment (sandals pretty much standard) extremely worn tooling, badly mushroomed press dies, spot welding link bores to re-tighten the press fits, no eye protection for the welder, everything made out of scrap metal, and mostly doing all of the work on the ground. But I have to hand it to them - they don't let ANYTHING go to waste 

I guess where there's a will, there's a way! I've never thought of other countries having the same equipment issues.🤔

You better bought a complet set trak assambly

Sasquatch -
That track press is SCARY!

The one I operated, had a jaw that held the pins/bushings and ram on both sides. Removed just the bolts on the one side of the plates and when pushed apart, would have a plate and half of the chain assembly still intact, stacked them so when putting back together, they went back to the original pairs.
I want to say the rams were about 8" ID and 3/4" wall - I have no recollection of who manufactured it or when it was made.
After I left that shop, another operator had the same experience - and on the same side of the press too!
I had built a "cage" around the press to try to contain the cylinders and hoses from reaching the operator. Fortunately it did it's job and saved him injury as well.

Those Pins and Bushings are nothing to take lightly, same with pulling sprockets --- a huge amount of pressure involved.

You are correct in showing the way things are accomplished - and the lack of safety gear is something that is very common - Uncomfortable, restricting, BUT there is no substitute when it comes to our bodies!

CTS