Honda FL6555 Operator's Manual page 45

Hydraulic Valve
If spool does not stay in "detent" position or
tends to be difficult to get into "detent", "detent
spool" wear and/or weak detent springs are
indicated and suspected parts should be
replaced.
Inspect valve spool r&urn springs for
evidence of distortion/damage.
If valve spool(s) was not centering properly
and valve spool slides freely in valve body, a
weak or broken return spring is indicated.
Inspect relief valve spring for damage or
distortion.
Inspect relief valve poppet and seat for wear
or damage.
Assembly
It is recommended that all '0' rings be
replaced during valve service.
Referto illustration for reference to assembly.
Thoroughly clean and dry all parts.
Carefully install the '0' rings in the valve body
spool and detent body '0' ring grooves.
Coat '0' rings with clean hydraulic oil prior to
.installation.
Extreme care must be taken to ensure '0'
rings are not damaged during installation
Valve Spools
Assemble spool return springs on valve
spools if they were removed previously. .
Install detent body on float spool.
Coat valve spools with clean hydraulic oil and
carefully install in valve body.
Extreme care must be taken during valve
spool installations to ensure '0' rings are not
damaged.
"Float" valve spool is installed in valve body
adjacent to return port.
Install end cap on detent body
Install detent balls, springs and plugs.
Install support, spring, spacer and end cap on
valve body/bucket cylinder spool.
Torque hardware to 2-3ftJlbs.
Relief Valve
Install sealing washer, seat, poppet, spring,
dup and body.
Screw in relief valve adjustment screw until
the spring just begins to compress and install
crushwasher, hex nut, second crushwasher
and cap.
Relief valve adjustment is made following
control valve installation as described under
"Relief Valve Adjustment".
Control lever and hydraulic connections
Install single lever control linkage as
illustrated.
Install adaptor fittings and quick disconnect
couplers.
Inspect adaptor fitting '0' rings and replace if
required.
Installation
Mount control valve on front loader valve
stand and reconnect hydraulic hoses to ports
from which they were removed.
Refer to hydraulic system schematic diagram
to check that hydraulic connections are
correct.
Relief valve setting should be adjusted
immediately following installation/start-up as
described under relief valve adjustment.
SERVICE
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