VEVOR SS-PAC02A Bedienungsanleitung Seite 12

8. Same as STEP 5, need to
loosen the smaller screw near
the outside, NOT the bigger one.
9.Loosen the 2 pieces black
screws by using a hex
screwdriver on end of piston rod.
10.Loosen the 4 pieces screws on the cylinder top.You will have the
whole cylinder part.
11. Take off the round shape metal part, clean all dirt and check if any
o-rings damaged.After cleaning and changing o-rings, You can evenly
apply some silicone oil or engine oil on inner o-ring.
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