JLG T500J Service And Maintenance Manual page 167

3. To remove a link, rivets holding links together must be
removed. Use a right-angle pneumatic die grinder with
a ¼" ball double cut bur attachment.
4. Insert tool into rolled over end of rivet. Grind out middle
of rivet until rolled over part of rivet falls off. Repeat for
all rivets to be removed.
3121200
SECTION 4 - BOOM & PLATFORM
5. After grinding it may be necessary to use a center punch
with a hammer to remove rivet.
NOTE: It may be necessary to loosen fixed end brackets from
machine to move track section enough to disconnect links.
4-19