JLG 680S Service Manual - Manual (Page 54)

SECTION 3 - CHASSIS & TURNTABLE
3-6 – JLG Lift – 3121234
7. Unscrew the cap nut and remove it.
8. Loosen the fixing nut of the stopper max flow and
disassemble it.
9. Turn in the stopper max flow to get swivel angle
zero.
10. Disassemble the rotary group in horizontal position.
11. Disassemble the stopper - max flow.
12. Remove the threaded pin (stopper - max flow).
13. Disassemble the plug.