13
Changing of valves and diaphragms
Valves
Dismantle valve compartment (1). Before changing the valves (2) note
the orientation of the valves so that they may be replaced correctly.
It is recommended to use new gaskets (3) when changing or checking
the valves.
Diaphragms
Remove the diaphragm cover (4) after having dismantled the valve
compartment as indicated above. The diaphragm (5) may then be
changed. If fluids have reached the crankcase, re-grease the pump
thoroughly. Check also the drain hole at the bottom of the pump is not
blocked.