582156110-EN-indC-Pump-20F50 pH.docx 20/11/2020
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Unscrew the 4 tie rods (3) using a 14 mm open-end
wrench.
Unscrew the piston (24) by positioning a 15 mm open-
end wrench on the flat surfaces of the piston and
an11 mm open-end wrench on the flat surfaces of the
intermediate piston (11).
Tools needed
14
11