JLG 67SL Service Manual - Manual (Page 80)

SECTION 4 - HYDRAULICS
4-4 – JLG Lift – 3121322
9. With the barrel clamped securely, apply pressure to
the rod pulling device and carefully withdraw the
complete rod assembly from the cylinder barrel.
.
10. Using suitable protection, clamp the cylinder rod in
a vise or similar holding fixture as close to the piston
as possible.
11. Loosen and remove the setscrew which attaches the
piston to the rod, and remove the piston.
12. Unscrew the piston counter-clock-wise, by hand,
and remove the piston from the cylinder rod.
13. Remove and discard the piston o-rings, seal rings,
and, if applicable, the snap ring.
Figure 4-5. Cylinder Rod Support
Pistons
Setscrews
Figure 4-6. Piston Setscrew Removal
Piston
Cylinder
Rod
Figure 4-7. Piston Removal
O-Ring
Piston
Piston
Seal
Snap Ring
(Outrigger Cylinder
Only)
Figure 4-8. Piston Seals