Originally Posted by
wrk101
The Light Action was a good, but low end derailleur. You can find a replacement, or use something better, like a 105 or 600 from that era.
I never thought of it as low end, but solidly mid-range. Its numerical designation puts it right in the middle of the hierarchy, along with what later became Shimano 105 and Deore LX. However, the "L" tosses in some weirdness in Shimano's otherwise clear road/mountain designations.