RAWLINK 79574 Manual De Instrucciones página 39

Hydraulic cylinder maintenance
Monthly maintenance is recommended
for the hydraulic cylinder. Any restrictions
due to dirt, rust, etc. can cause the either
slow movement or extremely rapid jerks,
damaging the internal components. The
following steps are designed to keep the
cylinder maintained and operational.
- Lubricate the cylinder and the pumping
mechanism with light oil.
- Visually inspect for cracked welds, bent,
loose, missing parts or hydraulic oil leaks.
- Inspect the hydraulic cylinder
immediately if it was subjected to an
abnormal load or shock load.
- Remove any hydraulic cylinder from
service that is damaged, worn down or
operates abnormally, until repaired by an
authorized service center.
- Check and maintain the cylinder oil level.
- Always store your hoist with the hydraulic
cylinder in the fully retracted position.
This will help protect critical areas from
corrosion.
- Do not use brake or transmission � uids or
regular motor oil as they can damage the
seals. Always use suitable hydraulic oil for
the appliance.
Bleeding the hydraulic system
Bleed excess air from the hydraulic system as
follows:
1. Open the release valve by turning it
counter clockwise.
2. Remove the oil � ller screw and � ll the
pump with hydraulic � uid.
3. Wait 5 minutes for trapped air to rise to
the surface.
4. Pump the handle or pedal for several full
strokes to eliminate any air in the system.
5. Check the oil � ller hole and if necessary,
add more hydraulic oil.
6. Restore the oil � ller screw. Close the
release valve by turning clockwise.
7. Test the cylinder several times for proper
operation before putting it into use. Do
not use the cylinder if it still does not
appear to be working properly. Have
an authorized service center service or
repair the hydraulic system.
Disposal of hydraulic � uid
Do not drain hydraulic oil into the sewer
system or dispose in an uncontrolled
location. Hydraulic � uid may take up to a
year to breakdown in the environment and
the ingredients may still be toxic. Contact
your local municipality for proper disposal
instructions or locations.
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