JLG T500J, Service And Maintenance Manual

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SECTION 5 - BASIC HYDRAULIC INFORMATION & SCHEMATICS
5-26 3121200
8. Install piston seal (8) and wear ring (7) onto piston (3).
9. Carefully install piston on cylinder rod. Do not damage
or dislodge o-ring and backup rings.
10. Install locknut (6) onto the rod.
11. Remove cylinder rod from holding fixture.
12. Position cylinder barrel in suitable holding fixture.
INSERTING ROD OFF-CENTER CAN DAMAGE PISTON AND CYLINDER BARREL
SURFACES. USE EXTREME CARE WHEN INSTALLING C YLINDER ROD, HEAD,
AND PISTON.
13. Clamp barrel securely and support rod. Insert piston end
into barrel cylinder. Do not damage or dislodge piston
loading o-ring and seal ring.
14. Screw the cylinder head gland into the barrel using a
tool and tighten until punch mark matches.
15. 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.
MAE29330
3
9
7
8
Figure 5-38. Piston Disassembly
MAE29520
Figure 5-39. Cylinder Head Installation