Oil Refilling Instructions
© HILPRESS GmbH Hamburg
GR 09/16
‘Spongy‘ piston action indicates there is air in the hydraulic system.
This is often because there is not enough oil in the tool oil reservoir.
Follow the steps below to add oil.
1. Remove the reservoir cover of the tool casing to access the oil reservoir cap.
2. Position the tool so the tool head is facing down and the nozzle of the oil reservoir
is facing upwards.
3. Remove the cap. To replace the oil completely, pour out all the oil from the
reservoir. Be careful not to pour oil on the plastic tool casing.
4. Add oil. The reservoir capacity is approximately 48 cc. Keep the oil free of dirt and
air bubbles when refilling the reservoir.
5. To expel air from the system, advance the piston completely and then retract. The
oil level will be significantly lower. Add more oil to fill it up.
6. Advance and retract the piston 2-3 times to ensure all air is removed from the
system. Replace the cap on the oil reservoir. Replace the reservoir cover.
Use only Shell Telus T15 or an equivalent hydraulic fluid
when changing or adding oil.
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