General Pump MW Repair Manual - Manual (Page 41)

GENERAL PUMP
A member of the Interpump Group
MW/S SERIES
Page 41
The proper sequence of valve unit assembly on the head is as follows:
During suction, insert the anti-extrusion ring, exploded view position 6 from the Owner’s Manual, (1, fig. 148).
Ensure that the O-ring and anti-extrusion ring are perfectly placed in their housings. Insert the suction valve
unit (1, fig. 150). The complete valve unit must be fully inserted into the bottom and should look like the
image in fig. 151.
Insert the O-ring, exploded view position 7 in the Owner’s Manual, (1. fig. 149).
Ref 300791 Rev.C
11-12