15
JH INDUSTIRES INC.
HYDRAULIC INSTALLATION,
CONTINUED
CAUTION
!
To avoid damage to the new seals and wear rings
do not use any sharp or pointy tools that may rip or
damage any of the new seals or wear rings.
2. Assemble the piston and gland back on and
secure with a new lock nut.
3. Liberally lubricate the outside of the new seals
and inside of the cylinder housing, align the
piston carefully and slide the entire assembly
back into the housing.
4. Install the snap ring back in place, being sure
that it is fully seated in it’s groove.
CYLINDER REINSTALLATION
1. Remount cylinder in lift and reinstall all cylinder
pins and keeper plates (See
FIGURE #14
).
2. Reattach all hydraulic hoses.
3. Clean up any spilled oil so as not to misinterpret
later as a new leak.
4. Bring the table back out of maintenance and
cycle the dock lift 3-4 times to get all air out of
the hydraulic system. Check the oil and top off
as needed (See
FIGURE #12
)
5. The lift is now ready to go back into service.
VENT PLUG
BREATHER
WIPER
DU BEARING
SNAP RING
GLAND
ROD
O-RING
OIL-IMPREGNATED
BRASS BEARING
GROOVED
PISTON SEAL
METAL
LOCK NUT
PISTON
GLASS FILLED
NYLON WEAR
RING
HOUSING
FIGURE #15
– Hydraulic Cylinder Cutaway
Summary of Contents for Copperloy
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