1. Those tracks are much too tight. There should be a bolt near the zerk for the adjuster to release some of the grease. Be careful, tracks that tight will probably have that grease under tremendous pressure. If you can’t find that, pull the zerk, and again be careful of pressure.
1b. I am deathly serious about being out of the way of that bolt on the tensioner. Tightening up the tracks to a half-inch of slack on that size crawler puts ~5500 lb of tension on the chains. That much (read: little) slack probably has it at much more. Convert that to PSI in the adjusters, and you will find it to be a lot. 2” of sag on a D6ish size dozer puts 800 lb of tension, which is, relative to a lot of the danger in heavy industry, pretty little pressure in the cylinder and sort of safe to work on.
2. Caterpillar’s spec for most of their crawlers is two inches of track sag. It is measured by stopping the track where one of the pins is centered on the top roller, then by taking a straight edge over the grouser bars, and measuring to the lowest grouser bar. That is the correct amount of slack.
3. Most of the transmissions on those tractors are under the floor, and pulling the center floor panel should be where you’ll find the transmission fill. John Deere probably says to use Hy Gard, any reputable ISO 46 will be fine.
1b. I am deathly serious about being out of the way of that bolt on the tensioner. Tightening up the tracks to a half-inch of slack on that size crawler puts ~5500 lb of tension on the chains. That much (read: little) slack probably has it at much more. Convert that to PSI in the adjusters, and you will find it to be a lot. 2” of sag on a D6ish size dozer puts 800 lb of tension, which is, relative to a lot of the danger in heavy industry, pretty little pressure in the cylinder and sort of safe to work on.
2. Caterpillar’s spec for most of their crawlers is two inches of track sag. It is measured by stopping the track where one of the pins is centered on the top roller, then by taking a straight edge over the grouser bars, and measuring to the lowest grouser bar. That is the correct amount of slack.
3. Most of the transmissions on those tractors are under the floor, and pulling the center floor panel should be where you’ll find the transmission fill. John Deere probably says to use Hy Gard, any reputable ISO 46 will be fine.