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4
1
2
1
2
GB
• Loosen the counter-nut 2 and remove cap 1.
• Extract the spring 3 and overturn the pipe,
making the oil escape.
3
• Move the pumping unit and drain the
remaining oil.
When the oil has been drained completely,
introduce the amount of new oil described
in chapter 1 .
• Bleed the pumping unit of air, making it
rise and fall until complete loading.
Introduce the spring and screw the cap 1
until it is completely inserted on the pump-
ing rod. Block the cap to the pumping
rod via the counter-nut 2.
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