
Q16
Q17
Q27
Q25
Q24
Q23
Q26
Countersunk
Q19
Q28
Ed. 002 - 01/2017
To facilitate fitting the O-ring (Q26) it is advisable
to warm it slightly with a blast of hot air.
• Screw the locking ring nut (
Q19
) back onto the body of the
pump unit until it makes contact, then loosen it by one turn;
• Remove the sleeve/cylinder seal (
Q28
) and replace it with
a new one;
• Remove the OR (
Q23-Q24
-
Q26
) from the body of the foot
valve (
Q27
) and from the ball seat holder (
Q25
) and, if
necessary, replace them.
Reassemble the components in their proper order
(as
indicated in the diagram)
;
The ball seating (Q16) is countersunk on one side,
where the ball (Q17) must sit.
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