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SAFETY
When connecting/disconnecting the hoses or
pipes
• When hydraulic hoses or pipes are connected, tighten
them once to the prescribed torque, then loosen them
slightly and retighten them to the prescribed torque.
a. Tighten the fi ttings after the installation surfaces fi t
snugly together.
b. The above procedures do not apply to fi ttings with
seal tape.
• Use two spanners, one to tighten/loosen and the other
to secure the mating hose/pipe to ensure that the hose
is not twisted.
• After connecting the hydraulic hoses or pipes, apply the
maximum working pressure fi ve or six times to check for
leakage.
• If high pressure, vibration or shock is applied to a twist-
ed hose, oil leak, hose breakage or damage to the hose
fi tting can result.
• Be sure that the hydraulic hoses are not contacting
sharp objects or each other. This could cause surface
fl aws on the hoses, resulting in breakage.
Handling of seals
• Clean the grooves for O-rings and remove any burrs.
• Be careful not to twist the O-rings. If twisted, remove it
with your fi ngertips.
• When inserting, be careful not to damage the seal.
• Handling of the fl oating seal
a. After removal, wipe all oil off the O-ring and housing
of the fl oating seal.
b. When assembling, apply a thin coating of gear oil to
the contact surface of the housing,
c. After assembly, turn the seal two or three times to get
it to fi t snugly.
• Apply grease to the lip of the oil seal.
a. This is to prevent wear from occurring upon fi rst start
up after assembly.
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