4
EN
Maintenance
For smooth operation, we recommend to remove the expander head and
regularly re-grease the thrust cone after expanding 20 tubes. (Multi-purpose
grease).
It is very important to keep the expander heads and the thrust cone free of
dirt and debris. If debris enter the back side of the expander heads or on the
thrust cone, you risk the tool sticking in the expanded position.
Please keep the thrust cone and expander heads clean to ensure proper
operation.
Filling up hydraulic oil (only if necessary)
It is possible to refill hydraulic oil in the expander HY-EX after 10’000 or more
usages.
Notice
The addition of hydraulic oil should be carried out at a suitable location, as it
is possible that oil might be spilled during re-filling and bleeding process.
Procedure:
1.
Secure the HY-EX head down / handle up in a bench vice.
2.
Unscrew the main handle counter-clockwise. Use a strap wrench to avoid
marring tool finish.
3.
Pull out the plug from the oil reservoir.
4.
Fill up the hydraulic oil until the reservoir is full (about 15 ml if it is empty).
For an ideal performance, we suggest using ISO-HV-15 hydraulic oil.
5.
Fully pump up the HY-EX several times with open reservoir and push the
release button (yellow), so trapped air can escape from the hydraulic oil.
6.
If air escapes, the liquid level may decrease. Repeat steps 4 and 5 until the
liquid level does not decrease anymore.
7.
Close the reservoir with the plug.
8.
Screw on the handle.
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