JLG M450 ANSI Service Manual - Manual (Page 130)

SECTION 4 - BOOM & PLATFORM
4-18 – JLG Lift – 3121127
12. To remove the piston (3) use a rubber mallet and a
plastic mandrel so the piston is no damaged.
13. At the point when the piston gear teeth come out of
engagement with the housing gear teeth, mark the
piston and housing with a marker as shown.
14. Remove the o-ring (204) and backup ring (207) from
end cap (4) and set aside for inspection.
15. Remove the wear guides (302) from the end cap (4)
and shaft (2).
16. To remove the main pressure seals (205), it is easi-
est to cut them using a sharp razor blade being
careful not to damage the seal groove.
17. Remove the thrust washers (304), from the end cap
(4) and shaft (2).