JLG 680S Service Manual - Manual (Page 234)

SECTION 4 - BOOM & PLATFORM
4-40 – JLG Lift – 3121234
15. Install the O-ring (204) and back-up ring (207) into
the inner seal groove on the end cap (4).
16. Thread the end cap (4) onto the shaft (2) end. Make
sure the wear guide stays in place on the end cap as
it is threaded into the housing (1).
17. Tighten the end cap (4). In most cases the original
holes for the lock pins will line up.
18. Place the lock pins (109) provided in the Helac seal
kit in the holes with the dimple side up. Then, using
a punch, tap the lock pins to the bottom of the hole.
19. Insert the set screws (113) over the lock pins.
Tighten them to 25 in. lbs. (2.825 Nm).