582156110-EN-indC-Pump-20F50 pH.docx 20/11/2020
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Place the ball (32) on the exhaust valve seat (34).
Apply adhesive (Loctite 5772) to the piston thread
(24).
Place the exhaust valve (34) and screw it on manually
at the contact.
Hold the piston with a 16 mm open-end wrench and
tighten the exhaust valve (34) with an 18 mm open-
end wrench.
Tools needed
16