Figure 20, Tool for piston seal (6.2617.010), Figure 21 – Metrohm 940 Professional IC Vario ONE/SeS/PP/Prep 2 User Manual
Page 90: Removing the piston cartridge from the pump head
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5.8 Servicing the high-pressure pump
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940 Professional IC Vario ONE/SeS/PP/Prep 2 (2.940.1520)
2
1
Figure 20
Tool for piston seal (6.2617.010)
1
Tip
2
Sleeve
Spare part
For this step you need a new piston seal (6.2741.020).
Replacing the piston seal
Figure 21
Removing the piston cartridge from the pump head
1
Piston cartridge
2
Backup ring
1 Removing the piston cartridge
Loosen the piston cartridge (19-9) using the adjustable wrench and
then unscrew it from the pump head by hand. Place it off to the side.
2 Removing the backup ring
Shake the backup ring (19-4) out of the piston opening. Place it off
to the side.
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