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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 9: Also, press the push rod down and look at the two actua-
tor springs on the bottom. If you see anything dirty or broken, it
needs to be cleaned or replaced.
Step 8: While you have the piston out, do a visual inspection on
the white valve support on top.
Step 7: Install the new seal into the groove on the plunger.
D25F Service