JLG H340AJ Service And Maintenance Manual page 149

SECTION 4 - BOOM & PLATFORM
6. Remove the end cap (4) and set aside for later
inspection.
7. Remove the stop tube if equipped. The stop tube is an
available option to limit the rotation of the actuator.
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8. Every actuator has timing marks for proper engage-
ment.
9. Prior to removing the shaft, (2), use a felt marker to
clearly indicate the timing marks between shaft and pis-
ton. This will greatly simplify timing during assembly.
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