Follow the sequence of steps for the maintenance procedure that you want to perform:
NOTICE
All pumps except VC-P21 and VC-P33: Whenever you remove the pump head, you must replace the seal wash seals.
To replace a pump head, see Replacing the Pump Head.
To replace a piston, see Replacing the Pistons.
To clean a piston, see Cleaning the Piston.
To replace the piston seals or support ring, see Replacing the Piston Seals or Support Ring.
To replace the seal wash seals, see Replacing the Seal Wash Seals.
To replace the pump head seals, see Replacing the Pump Head Seals.
To test the pump for piston seal leakage, see Testing the Piston Seals for Leakage.
For an overview of the pump head parts, see Overview of Pump Head Parts.