JLG 660SJ Service Manual - Manual (Page 172)

SECTION 4 - BOOM & PLATFORM
4-24 – JLG Lift – 3121298
15. Remove wear guides (302) from end cap (4) and shaft
(2).
16. To remove main pressure seals (205), cut them with a
sharp razor blade. Do not to damage seal groove.
17. Remove thrust washers (304) from end cap (4) and shaft
(2).
18. Remove wiper seal (304.1) from end cap (4) and shaft (2).
19. Remove piston O.D. seal (202).