JLG 450A_AJ Series II Service Manual - Manual (Page 282)

SECTION 4 - BOOM & PLATFORM
4-16 – JLG Lift – 3121180
11. Mark housing (1) ring gear in relation to piston O.D.
gear before removing piston (3). There should now
be timing marks on housing (1) ring gear, piston (3)
and shaft (2).
12. Use a rubber mallet and plastic mandrel to prevent
damage when removing piston (3).
13. Mark piston and housing with a marker where piston
gear teeth come out of engagement with housing
gear teeth as shown.
14. Remove O-ring (204) and backup ring (207) from
end cap (4) and set aside.
15. Remove wear guides (302) from end cap (4) and
shaft (2).