6.7 Servicing the high-pressure pump
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930 Compact IC Flex Oven/SeS/PP (2.930.2500)
Figure 19 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 20
Removing the piston cartridge from the pump head
1
Piston cartridge
2
Backup ring
1
Removing the piston cartridge
Loosen the piston cartridge (20-1) 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 (20-2) out of the piston opening. Set it aside.