General Pump KF Repair Manual - Manual (Page 9)

2.2.2 Head assembly - valve units
Pay careful attention to state of wear of the various components; replace them when necessary,
and in any case within the intervals indicated in the table in fig. 14, chapter 11 of the Owner’s
Manual. At each valve inspection, replace all valve plugs, O-rings and anti-extrusion rings.
Before positioning the valve units, clean and perfectly dry the relevant seats in the head as
indicated in fig. 14.
A) Unfasten the (7) M12x35 valve cover screws, and remove the cover, fig. 12.
B) Extract the valve plugs using a slide hammer (part #F26019400, fig. 12.
C) Extract the valve units using the same slide hammer used for the valve plugs (part #F26019400): it is
applied to the M10 hole of the valve guide
If the extraction of the delivery and suction valve units is particularly difficult (for example due
to incrustations caused by prolonged pump inactivity), use the extaction tool (part #27516900
combined with part #F26019400).
Disassemble the suction and delivery valve units by screwing on an M10 screw long enough to act on the
valve and extract the valve guide from the salve seat (4, fig. 13).
GENERAL PUMP
A member of the Interpump Group
KF SERIES
Page 9
Ref 300917 Rev.A
12-12
Remove the pinion using a slide hammer applying it to the M12 hole (fig. 17).
Unfasten the reducer case screws; then remove the reducer case (fig. 18).