Yes, I'm out there somewhere usually, sometimes I forget where LOL ! There's no limit on refreshing ones memory here, and I know the feeling, you do research on something, figuring you'll be working on it soon and something else takes priority! My yard has a few of those projects still lingering too. Time passes and you're back tracking a bit on where you left off. One great thing about the posts we make is that you can copy paste the information, take a screen shot and save for reference, do a search on the site.
Alemite High Volume Bucket Pump, (link attached) is typically the best and or safest way to lube these, and the seals are the concern, like was mentioned if you adapted a cartridge grease gun or similar, they can produce much higher pressures, and its been said you can feel the back pressure and stop before a seal ruptures, I've never tried it. I'm familiar with the Caterpillar rollers of the era that required track roller lube. The seals are different, not sure about bushings, but you need to be aware of any assembly with yellow metal (bronze bushings) and the lube you use, make sure its compatible with yellow metal if your rollers have bronze bushings. 90 weight is going to be more viscous, more prone to seep than NLGI 0, be sure to find out what was originally called for and what is the closest modern equivalent. One example I can cite is my troy bilt tiller, a 70's horse model with the bronze gear assembly, I use an API GL4 Hypoid - SAE140 from Sta-Lube, its $40/gallon at NAPA, but is the equivalent to what the tiller left the factory with, and that lube is obviously yellow metal safe.
One of the most informative contributors to ACMOC forums on lubricants used on heavy equipment, to me anyways, was OzDozer, its really interesting what makes up the lubricants we use, the properties, soap bases and compatibility, and all things similar. His informative posts, as are many many others that participate, again, to me were highly educational and its been a long time since I've chatted with him and that forum. Most may not be aware of some of the technical aspects of industrial lubricants, so its good reading to inspire you to do any research for any questionable application you need to source the correct lube for. Another thing that came to light was that many have mixed their own 90wt/cartridge grease etc. and there's more to that than not, I don't subscribe the the practice unless there was no other choice, that or run dry. Things like incompatible soap bases and critical assemblies that these concoctions may not be the best solution or are to the detriment of the assembly.
Alemite
Chevron MultiFak EP
JD Crawler Forum post on track roller lube
ACMOC
RedPower 1
RedPower 2
