5.8 Servicing the high-pressure pump
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60
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940 Professional IC Vario TWO (2.940.2100)
2
1
Figure 16
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 17
Removing the piston cartridge from the pump head
1
Piston cartridge
2
Backup ring
1 Removing the piston cartridge
using the adjustable wrench and
then unscrew it from the pump head by hand. Set it aside.
2 Removing the backup ring
Shake the backup ring
out of the piston opening. Set it aside.
