1260 Infinity Binary Pump User Manual 161
Maintenance
10
Maintenance of a Pump Head without Seal Wash
3
Check the piston surface and remove any deposits or 
layers. Most suitable is polishing of the piston rod with 
toothpaste. Replace the piston if scratched or if dents are 
visible.
The best way to inspect a piston is to hold it up and 
watch e.g. a light bulb through the piston rod. The 
transparent sapphire acts as a very strong magnifier and 
even smallest surface abnormalities become visible.
4 Using the steel side of the insert tool carefully remove 
the seal from the pump housing. Remove wear retainers, 
if still present.
5 Using the plastic side of the insert tool insert the new 
seals into the pump head and press them firmly in 
position.
6 Place a seal wash gasket in the recess of the support 
ring. Put the seal holder on top of the gasket.
Insert tool
Piston seal
Pump housing
Seal holder
Gasket
Support ring