General Pump MW Repair Manual - Manual (Page 39)

GENERAL PUMP
A member of the Interpump Group
MW/S SERIES
Page 39
Unscrew the valve opening device by means of a 30 mm spanner (1, fig. 140).
Complete disassembly removing the 1/4” plugs on the front of the head and the 1/2” plugs on the lower part
of the head.
It is now possible to remove the head from the pump casing, unscrewing the 8 M16 x 150 screws (1, fig. 142).
During assembly of the head, pay special attention not to hit the plungers (fig. 143).
Remove the suction and outlet valve units, unscrewing an M10 screw in such a way to press on the inner
guide and remove the valve guide from the valve housing. (1, fig. 141).
Ref 300791 Rev.C
11-12