Eaton Hydrowa, Instruction Manual

Page: 27 / 149

Instruction Manual
Page 15
8 Maintenance manual
8.1 Checklists
- Check the condition of all parts / components of the hydraulic cylinder
every month. Look for damaged, corroded or worn parts. If any part is
damaged or worn, contact the manufacturer of the cylinder so the
components will be replaced safe and effective.
- Keep the hydraulic system and components free from any kind of
environmental threats.
- Check if the connections and fittings are still properly fixed. Connections
that are loosened can cause leakage that will result in loss of oil, damages
to the installation and environment.
- Check the oil temperature and oil cleanliness (NAS class) regularly. The oil
temperature may not exceed 70°C else it will damage the seals of the
cylinder. Temperature of water glycol may not exceed 50°C.
- Cleaning with high-pressure spray-nozzle is not allowed. This to
avoid damages on painting, silicon sealant, seals, dirt wiper,
bearings, etc.
- All inspections and maintenance activities need to be properly
documented in the maintenance and inspection log and need to be
available to benefit Eaton warranty policy.
Do NOT disassemble a cylinder! If any part has to be replaced
contact the manufacturer of the cylinder. Warranty expires
when disassembly is done by third parties. (None Eaton
personnel)
8.2 Maintenance description for basic parts
Piston rod
- Fresh water environment: fully actuate the piston rod minimum once a
month
- Brackish or salt water environment, the frequency of retracting and
extending should be minimum twice a week.
- Check every month the surface of the piston rod for any kind of damage.
The piston rod normally is protected with the oil containing in the cylinder
itself.
- Always protect the extended part of the piston rod (the part which is never
in contact with oil) with a Denso system. The tape on the primer should
have a 50% overlap (Primer will protect the piston rod surface from water.
The tape will protect the primer and prevent air from affecting the rod
surface). Check the condition of the Denso-tape every month. The tape
could be damaged due to an external threat such as an impact. In case of
damage, replace the Denso-tape.
- Piston rod coating should be protected from abrasion due to wind and rain
borne duct particles and dirt from the surrounding areas, during hot work or
other operations in the proximity.
- If the rod surface is impacted by a foreign object than the rod surface
needs to be checked for any surface irregularities. If irregularities are found
Eaton should be contacted.