25
M
ai
nt
ena
nc
e
Wear part replacement
Diaphragm replacement
Unscrew all the pump head fixing
screws.
Take out the combination of the pump
head, valve and valve seat.
*
Do not separate each part.
Remove the diaphragm fixing screw
and detach the retainer plate and dia-
phragm.
Place a new diaphragm and the retain-
er plate onto the under retainer plate.
Secure the retainer plate and dia-
phragm.
Apply the LOCTITE® 222 to the dia-
phragm fixing screw and tighten it by
1.96N•m.
Push down the diaphragm until it bottoms out.
Mount and secure the combination of the pump head, valve and valve
seat onto the bracket with the screws by 1.96N•m.
1
2
3
4
5
Pump head
fixing screw
Pump head
Valve
Valve seat
Diaphragm
fixing screw
Retainer plate
Diaphragm
Under
retainer plate
Connecting rod
Bracket
Mating
point
