JLG E450A Service And Maintenance Manual page 134

SECTION 4 - BOOM & PLATFORM
7. Remove the stop tube if included. The stop tube is an
available option to limit the rotation of the actuator.
8. Every actuator has timing marks for proper engage-
ment.
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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.
10. Remove the shaft (2). It may be necessary to strike the
threaded end of the shaft with a rubber mallet.
11. Before removing the piston (3), mark the housing (1)
ring gear in relation to the piston O.D. gear. There should
now be timing marks on the housing (1) ring gear, the
piston (3) and the shaft (2).
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