JLG E300 Service Manual - Manual (Page 120)

SECTION 4 - BOOM & PLATFORM
4-22 – JLG Lift – 3121253
9. Pull up on the other end of the round bar and slide
the new poly roller onto the bar.
10. Install a new 8-32 x 0.500 self threading screw on
the other side.
NOTE: When tightening screws make sure screw head is
seated against link with no space in between the link
and underside of screw head. Maximum tightening
torque is 18-20 in-lbs.