Troubleshooting
120 810770 Operator Manual Echion
5 Hydraulic fluid is leaking from
between a high-pressure end
cap and a high-pressure
cylinder.
The hydraulic end cap bolts are
not tightened.
Make sure that the end cap bolts
are tightened to the correct torque
value.
Refer to Fittings on page 144.
An O-ring has failed. Examine and replace the O-ring.
A high-pressure seal is damaged
or has failed.
• Disassemble the parts and
look for flaws, deterioration,
erosion marks, or cracks.
• Make sure that the mating
surfaces are smooth and
clean.
• If damage is found, replace
the component.
6 Hydraulic fluid is leaking. The O-ring on the proximity switch
has failed.
Replace the O-ring or the sensor.
7 Water leaks at a rate of more
than30ml/minute.
The high-pressure seal has failed. Replace the seal.
Hydraulic fluid leaks at a rate of
more than30ml/minute.
The hydraulic seal has failed. Replace the seal.
8 Water is leaking. The high-pressure cylinder has
failed.
Replace the cylinder.
The check valve body has failed. Replace the check valve body.
Symptom Cause Solution
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