JLG 530LRT, Service And Maintenance Manual

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SECTION 4 - BASIC HYDRAULIC INFORMATION & SCHEMATICS
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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 BAR-
REL SURFACES.
27. With barrel clamped securely, and while adequately
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.
28. Continue pushing the rod into the barrel until the
cylinder head gland can be inserted into the barrel
cylinder.
29. If applicable, secure the cylinder head retainer using
a suitable chain wrench.
30. After the cylinder has been reassembled, the rod
should be pushed all the way in (fully retracted) prior
to the reinstallation of any holding valve or valves.
31. If applicable, install the cartridge-type holding valve
and fittings in the port block using new o-rings as
applicable.