JLG 600SJ Service And Maintenance Manual page 201

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).
18. Remove the wiper seal (304.1) from its groove in the
end cap (4) and shaft (2).
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SECTION 4 - BOOM & PLATFORM
19. Remove the piston O.D. seal (202).
20. Remove the piston I.D. seal (200). You may now pro-
ceed to the inspection process.
– JLG Lift – 4-29