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Replacement of diaphragm
<Disassembly>
z
Set the stroke length adjusting dial at 100%.
x
Remove the pump head from the pump unit by loosening the four hexagon socket bolts with a hexagon bar wrench.
c
Hold the periphery of the diaphragm and rotate it
counterclockwise to detach it from the plunger
pin. (The diaphragm is screwed onto the plunger
pin.)
•
In some cases, a certain number of diaphragm
spacers are inserted behind the diaphragm and
the retainer for the purpose of positioning. Be
careful not to lose them when replacing the
diaphragm.
<Reassembly>
For reassembly, follow the steps of disassembly in
reverse, paying attention to the following.
z
Firtst, make sure that the stroke length of the
pump is set at 100%.
•
Start up the pump for setting the stroke length.
Then, stop the pump and turm the power off.
x
Insert the retainer and diaphragm spacer(s) onto
the threaded part of a new diaphragm and screw
the plunger pin into it.
•
Fit the concave side of the retainer onto the
threaded part of the diaphragm.
c
Attach the pump head(1) to the pump body by
tightening the hexagon socket bolt.
(Clampimg torque: 2.16N·m {22kgf·cm})
Pump head
Plunger Pin
Diaphragm spacer
Retainer
Diaphragm
