Figure 18, Tool for piston seal (6.2617.010), Figure 19 – Metrohm 940 Professional IC Vario TWO/SeS/PP User Manual
Page 80: 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 TWO/SeS (2.940.2400)
2
1
Figure 18
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 19
Removing the piston cartridge from the pump head
1
Piston cartridge
2
Backup ring
1 Removing the piston cartridge
Loosen the piston cartridge (17-9) 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 (17-4) out of the piston opening. Place it off
to the side.
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