Checking track tension is a near daily chore, depending on circumstances. In the motor pool, you can literally tap each end connector (that is not on the ground) with a ball peen hammer and tell if the block is dead or not (bad). A high ping is a good block, a thunk is a bad, or dead one.
Walking track is the process of tightening each and every wedge bolt on both the inner and outer track on both sides. It is a time consuming task and you can only tighten them when the track blocks are between the first road wheel and the compensating idler wheel. Hence the need to "walk" the tank forward a yard or so at a time, then tighten the dozen or so end connectors on each track, and then walk the tank forward another yard and so on. You stick a screwdriver in the track pin or mark the first end connector with chalk so you know when you have come back to the beginning. There's around 80 track blocks per side with two wedge bolts per block, so that's around 320 wedge bolts the crew is tightening almost daily.
Once all the end connectors are tightened, you can then check the track tension. You want the track as tight as possible. It will loosen as the rubber bushing wear and the end connectors loosen up as the vehicle maneuvers.