JLG 680S Service Manual - Manual (Page 228)

SECTION 4 - BOOM & PLATFORM
4-34 – JLG Lift – 3121234
4. Install the end cap (4) removal tools provided with
the Helac seal kit.
5. Using a metal bar, or something similar, unscrew the
end cap (4) by turning it counter clockwise.
6. Remove the end cap (4) and set aside for later
inspection.
7. Remove the stop tube if included. The stop tube is
an available option to limit the rotation of the actua-
tor.
8. Every actuator has timing marks for proper engage-
ment.