General Pump MK Repair Manual - Manual (Page 24)

GENERAL PUMP
A member of the Interpump Group
MK SERIES
Page 24
2.2 Fluid End Repair
2.2.1 Head Disassembly - Valve Units
The head requires preventive maintenance as indicated in the use and maintenance manual. Interventions
may be limited to valve inspection, or replacement as needed. To extract the valve units operate as follows:
Unfasten the 8 M16 x 55 screws of the valve cover (1, fig. 78) and remove the cover (1, fig. 79).
Remove the spring (1, fig. 81).
Extract the valve plug using a slide hammer applied to the M10 hole of the valve plug (1, fig. 80).