General Pump SK Repair Manual - Manual (Page 31)

GENERAL PUMP
A member of the Interpump Group
SK SERIES
Page 31
2.2 Repairing Hydraulic Parts
2.2.1 Dismantling the Head-Liners-Valves
The head does not require periodic maintenance.
Operations are limited to inspection or replacement of the valves, when necessary. To extract the valve
assemblies work as follows:
Loosen, without removing, the M10 x 140 screws affixing the liners to the head (1, fig. 106) to free them.
Unscrew two diametrically-opposite M16 x 80 head affixing screws (1 and 2, fig. 107) and replace them with
two service pin-screws (part #F27540200)(1, fig. 108), and then proceed to remove the remaining screws.
Separate the head and the spacer from the pump casing (1 fig. 109).