JLG E450A Service And Maintenance Manual page 147

5. After grinding it may be neccesary to help the rivet out
by using a center punch with a hammer.
NOTE: It may be necessary to loosen the fixed end brackets
from the machine in order to twist and pull the track
section enough to disconnect the links.
3121714
SECTION 4 - BOOM & PLATFORM
6. Using a flat head screwdriver between the links, twist
the screwdriver and pull the links apart.
4-31