JLG 80SL Service Manual - Manual (Page 89)

SECTION 4 - HYDRAULICS
3121325 – JLG Lift – 4-9
EXTREME CARE SHOULD BE TAKEN WHEN INSTALLING THE
CYLINDER ROD, HEAD, AND PISTON. AVOID PULLING THE ROD
OFF-CENTER, WHICH COULD CAUSE DAMAGE TO THE PISTON
AND CYLINDER BARREL SURFACES.
13. With the barrel clamped securely, and while ade-
quately supporting the rod, insert the piston end into
the barrel cylinder. Ensure that the piston loading o-
ring and seal ring are not damaged or dislodged.
14. Continue pushing the rod into the barrel until the cyl-
inder head can be inserted into the barrel cylinder.
15. Using a spanner wrench, tighten the cylinder head
onto the barrel.
NOTE: Steps 16 applies only the Lift and Axle Lockout Cyl-
inders.
16. If applicable, after the cylinder has been reassem-
bled, the rod should be pushed all the way in (fully
retracted) prior to the reinstallation of any valve
block, load check valve, or safety valve.
Cylinder
Head
Cylinder
Rod
Piston
Cylinder
Barrel
Figure 4-21. Rod Installation
Cylinder
Head
Barrel
Cylinder
Rod
Figure 4-22. Rod Assembly Installation
Setscrews
Cylinder
Barrel
Valve
Block
Figure 4-23. Valve Block Installation
NOTE: Lift Cylinder only.