JLG 80SL Service Manual - Manual (Page 88)

SECTION 4 - HYDRAULICS
4-8 – JLG Lift – 3121325
5. Carefully slide the piston spacer onto the cylinder-
rod.
6. If applicable, correctly install new o-ring and snap
ring in the inner piston diameter groove.
7. If applicable, correctly place new seals in the outer
piston diameter groove(s). (A tube, with an inner
diameter slightly larger than the outer diameter of
the piston is recommended to install the solid seal.)
8. Using suitable protection, clamp the cylinder rod in
a vise or similar holding fixture as close to the piston
as possible.
9. If applicable, carefully thread the piston clock-wise
on the cylinder rod hand tight until it abuts the
spacer, ensuring that the o-ring, snap ring, and pis-
ton seals are not damaged or dislodged.
10. If applicable, insert the setscrews on the piston and
tighten to lock piston in place on cylinder rod.
11. Remove the cylinder rod from the holding fixture.
12. Position the cylinder barrel in a suitable holding fix-
ture.
Spacer
Cylinder
Rod
Figure 4-17. Spacer Installation
O-Ring
Piston
Piston
Seal
Snap Ring
(Outrigger Cylinder
Only)
Figure 4-18. Piston Seal Installation
Piston
Spacer
Cylinder
Rod
Figure 4-19. Piston Installation
Pistons
Setscrews
Figure 4-20. Piston Setscrew Installation