JLG 400S Service And Maintenance Manual page 322

SECTION 4 - BOOM & PLATFORM
19. Tighten the end cap (4). In most cases the original holes
for the lock pins will line up.
20. 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.
4-48
21. Insert the set screws (113) over the lock pins. Tighten
them to 25 in. lbs. (2.825 Nm).
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