Operating manual High-pressure double diaphragm pumps Cobra 40-10; Cobra 40-25
8 Cleaning and Maintenance
52 Order number 2340851 | Edition 05/2022
8.2.11.2 Filling Hydraulic Stage with Oil
CAUTION
Environmental pollution caused by waste oil!
Waste oil in the sewage network or spilled on the ground causes severe environmental
damage.
Groundwater pollution is liable to prosecution.
4 Collect waste oil and bring it to a collection point.
4 Waste oil is taken back by the seller at the time of purchasing hydraulic oil.
B_07987
8
7
4
9
5
6
17 mm; 0.67in
1. Dismount the pump and place it upside down on a suitable underlay and position it
horizontally.
2. Unscrew and remove threaded plug (5).
3. Unscrew 2 locking screws (4) and replace with 2 threaded fittings (6) from the oil filling
set.
4. Connect hoses with Y-pieces (7).
5. Fill syringe (8) with hydraulic oil and insert into hose.
6. Move piston (9) into the first end position. Use the syringe to fill the oil, until the oil flows
out of the suction tube into the oil tank with no air bubbles.
7. Move piston (9) into the second end position. Use the syringe to fill the oil, until the oil
flows out of the suction tube into the oil tank with no air bubbles.
8. Continue to top up the oil until the level before venting is approx. 17 mm; 0.67 inches
below the upper edge of the oil tank.
9. Screw in threaded plug (5) and tighten gently. Put pump on its side and dismount oil
filling set. Seal the filler openings tightly with 2 locking screws (4).
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